Emerson Fisher 161AY Series, Fisher 161EB Series, Fisher EZR, Fisher PRX Series Instruction Manual

Instruction Manual
D102600X012

August 2018

Type EZR Pressure Reducing Regulator

161AY SERIES PILOT

TYPE PRX PILOT

Type EZR

Figure 1. Type EZR Pressure Reducing Regulator

WARNING

!

Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion

and/or re causing property damage and

personal injury or death.

Fisher™ regulators must be installed,
operated and maintained in accordance
with federal, state and local codes, rules
and regulations and Emerson Process
Management Regulator Technologies, Inc.
(Emerson) instructions.

If the regulator vents gas or a leak
develops in the system, service to the unit
may be required. Failure to correct trouble
could result in a hazardous condition.

Call a gas service person to service the

unit. Only a qualied person must install

or service the regulator.

TYPE EZR REGULATOR

Introduction

Scope of the Manual

This instruction manual provides installation,
startup, adjustment, maintenance and parts ordering
information for Type EZR pressure reducing regulator,
Types 112 restrictor, 161AY, 161EB and PRX Series
pilot. Any accessories used with this regulator are
covered in their respective instruction manuals.

Product Description

The Type EZR pilot-operated, pressure reducing
regulators are used for natural gas, air or other
non-corrosive gas applications and include a
Type 112 restrictor and a 161EB, 161AY or
PRX Series pilot.

Pilot Type Descriptions

Type 161AY—Low-pressure pilot with an outlet

pressure range of 6 in. w.c. to 7 psig / 15 mbar to

0.48 bar. Pilot bleeds (exhausts) downstream through
the sense (control) line.

Type EZR

Specications

Specications for the Type EZR regulator are shown below. The control spring range for the pilot is marked on the

spring case of 161EB Series pilots and on the nameplate of 161AY and PRX Series pilots. Other information for
the main valve appears on the nameplate.

Main Valve Body Sizes, End Connection Styles
and Structural Design Ratings

(1)(2)

See Table 1

Maximum Inlet Pressures and Pressure Drops

(1)

Main Valve: See Table 10
Pilots: See Table 3
Restrictor: 1500 psig / 103 bar

Outlet (Control) Pressure Ranges

See Table 2

Main Valve Plug Travel

NPS 1, 1-1/4 x 1, 2 x 1 /
DN 25, 32 x 25, 50 x 25: 0.37 in. / 9.4 mm
NPS 2 / DN 50: 0.68 in. / 17 mm
NPS 3 / DN 80: 0.98 in. / 25 mm
NPS 4 / DN 100: 1.19 in. / 30 mm
NPS 6 / DN 150: 1.5 in. / 38 mm
NPS 8 / DN 200: 1.75 in. / 44 mm

1. The pressure/temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.

2. End connections for other than ASME standard can usually be provided, contact your local Sales Ofce for assistance.

Type 161AYM—The monitor version of the Type 161AY
pilot. The pilot bleed (exhaust) is isolated from the sense
(control) line. This pilot is used in monitoring systems
requiring an isolated pilot bleed (exhaust).

Type 161EB—High accuracy pilot with an outlet
pressure range of 5 to 350 psig / 0.34 to 24.1 bar.
Pilot bleeds (exhausts) downstream through the sense
(control) line.

Type 161EBM—The monitor version of the Type 161EB
pilot. The pilot bleed (exhaust) is isolated from the sense
(control) line. This pilot is used in monitoring systems
requiring an isolated pilot bleed (exhaust).

Type 161EBH—The high pressure version of the
Type 161EB pilot with an outlet pressure range from
250 to 700 psig / 17.2 to 48.3 bar.

Type 161EBHM—The high pressure version of the
Type 161EBM pilot with an outlet pressure range from
250 to 700 psig / 17.2 to 48.3 bar.

Minimum and Maximum Differential Pressures

See Tables 4 and 10

Proportional Bands

See Table 2

Process Temperature Capabilities

See Table 8

Pressure Registration

External

Options

• Integral Slam-Shut Device

• Pre-piped Pilot Supply and Pilot Bleed

• Travel Indicator

• Inlet Strainer

• Type 252 Pilot Supply Filter

• Trim Package

• Restricted Capacity Trim

• Pilot Diaphragm for Pressure Loading

and sensitivity, an integral restrictor adjustment which
allows adjustable opening and closing speeds and
a damper adjustment which adjusts inlet pressure
variability and loading pressure oscillations.

Type PRX/120-AP—Outlet pressure range of 435 to
1000 psig / 30.0 to 69.0 bar. The Type PRX/120-AP
can be used as the pilot on single-stage pressure
reducing regulators, as the monitor pilot or working
pilot in wide-open monitor systems or as the working
pilot for monitoring and working regulators in the
working monitoring systems.

Type PRX/125—Identical to the Type PRX/120 except
the restriction screw is removed. The Type PRX/125
can only be used as the monitor override pilot on
working monitor applications.

Type PRX/125-AP—Identical to the Type PRX/120-AP
except the restriction screw is removed. The
Type PRX/125-AP can only be used as the monitor
override pilot on working monitor applications.

Type PRX/120—Outlet pressure range of 14.5 to
435 psig / 1.00 to 30.0 bar. The Type PRX/120 can be
used as the pilot on single-stage pressure reducing
regulators or as the monitor pilot or working pilot in
wide-open monitor systems. The Type PRX has a
double diaphragm which provides increased accuracy

For applications requiring extremely
tight control, using a Type 161AYM,
161EBM, 161EBHM or PRX/120 pilot will
increase the accuracy of the regulator.

(1)

(1)

Note

2

Type EZR

Table 1. Main Valve Body Sizes, End Connection Styles and Body Ratings

MAIN VALVE BODY SIZE, NPS / DN MAIN VALVE BODY MATERIAL END CONNECTION STYLE

2 x 1, 2, 3, 4 and 6 /

50 x 25, 50, 80, 100 and 150

(3)

1, 1-1/4 x 1

(4)

, 8 x 4

6 x 4

100,150 x 100, 200 x 100, 150,

200 x 150 and 300 x 150

, 2 x 1, 2, 3, 4,

(4)

(4)

, 6, 8 x 6

x 25, 50 x 25, 50, 80,

and 12 x 6

(4)

/ 25, 32

Cast iron

WCC Steel

NPT (NPS 2 x 1 and 2 / DN 50 x 25 and 50 only) 400 psig / 27.6 bar

CL125 FF 200 psig / 13.8 bar

CL250 RF 500 psig / 34.5 bar

NPT or SWE (NPS 1, 2 x 1 and 2 /

DN 25, 50 x 25 and 50 only)

CL150 RF 290 psig / 20.0 bar

CL300 RF 750 psig / 51.7 bar

CL600 RF or BWE 1500 psig / 103 bar

CL150 RF 290 psig / 20.0 bar

8 / 200 LCC Steel

CL300 RF 750 psig / 51.7 bar

CL600 RF 1500 psig / 103 bar

1. Ratings and end connections for other than ASME standard can usually be provided. Contact your local Sales Ofce for assistance.

2. See Tables 3, 8, 10 and 11 for diaphragm materials and additional pressure ratings.

3. Available in steel NPT only.

4. NPS 6 x 4, 8 x 4, 8 x 6, 12 x 6 / DN 150 x 100, 200 x 100, 200 x 150, 300 x 150 Types EZR and 399 bodies are not the same as the EW valve bodies and are not interchangeable.

Table 2. Outlet (Control) Pressure Ranges, Proportional Bands and Pilot Control Spring Information

(1)(3)

3 mbar

3 mbar
34 mbar
34 mbar
34 mbar

34 mbar
34 mbar
41 mbar
90 mbar

0.10

0.21

Part Number Color Code

(2)

1B653927022

(2)

1B537027052

(2)

1B537127022

(2)

1B537227022

(2)

1B537327052

(2)

17B1260X012

(2)

17B1262X012

(2)

17B1259X012

(2)

(2)

(2)

(5)

(5)

17B1261X012
17B1263X012
17B1264X012

17B1263X012 Blue 0.262 6.66 3.85 97.8

17B1264X012 Red 0.294 7.47 4.22 107

(1)

Part Number Color Code

M0255240X12
M0255230X12
M0255180X12
M0255220X12

M0255210X12
M0255200X12
M0255860X12

TYPE

OUTLET (CONTROL) PRESSURE RANGE PROPORTIONAL BAND

psig bar psig bar In. mm In. mm

161AY or

161AYM

161EB or

161EBM

161EBH or

161EBHM

(4)

161EB

TYPE

6 to 15 in. w.c.

0.5 to 1.2

1.2 to 2.5

2.5 to 4.5

4.5 to 7

5 to 15
10 to 40
30 to 75

70 to 140
130 to 200
200 to 350

250 to 450 17.2 to 31.0 3.5 0.24

400 to 700 27.6 to 48.2 7 0.48

30 to 300 2.1 to 20.7 6 0.41 15A9258X012 Green 0.243 6.17 1.88 47.7

OUTLET (CONTROL)

PRESSURE RANGE

15 to 37
34 to 83

83 mbar to 0.17 bar

0.17 to 0.31

0.31 to 0.48

0.34 to 1.0

0.69 to 2.8

2.1 to 5.2

4.8 to 9.7

9.0 to 13.8

13.8 to 24.1

1 in. w.c.
1 in. w.c.

0.5

0.5

0.5

0.5

0.5

0.6

1.3

1.5
3

ACCURACY CLASS (AC)

psig bar In. mm In. mm

14.5 to 26
23 to 44

PRX/120
PRX/125

PRX/120-AP
PRX/125-AP

1. Proportional band and Accuracy Class include outlet pressure drop plus hysteresis (friction), but do not include lockup.

2. Proportional band was determined with a pressure drop ranging from 50 to 150 psig / 3.5 to 10.3 bar. Approximately double the proportional band if the pressure drop is less than
50 psig / 3.5 bar.

3. With Type 112 restrictor set on 2. With Type PRX restrictor turn the restrictor screw one turn counterclockwise from fully seated.

4. Should only be used as the intermediate reduction pilot on the Type EZR worker/monitor systems.

5. Proportional band was determined with a pressure drop ranging from 100 to 300 psig / 6.9 to 20.7 bar. Approximately double the proportional band if the pressure drop is less than
100 psi / 6.9 bar.

41 to 80

73 to 123

116 to 210
203 to 334
319 to 435

435 to 1000 30.0 to 69.0 1% M0273790X12 Clear 0.335 8.51 3.93 99.8

1.00 to 1.8

1.6 to 3.0

2.8 to 5.5

5.0 to 8.5

8.0 to 14.5

14.0 to 23.0

22.0 to 30.0

2.5%

2.5%

2.5%

2.5%

1%
1%
1%

(1)

STRUCTURAL DESIGN RATING

1500 psig / 103 bar

PILOT CONTROL SPRING INFORMATION

Wire Diameter Free Length

Olive drab

Yellow

Light green

Light blue

Black

White

Yellow

Black

Green

Blue
Red

0.105

0.114

0.156

0.187

0.218

0.120

0.148

0.187

0.225

0.262

0.294

2.67

2.90

3.96

4.75

5.54

3.05

3.76

4.75

5.71

6.65

7.47

PILOT CONTROL SPRING INFORMATION

Wire Diameter Free Length

Yellow
Green

Blue

Black

Silver

Gold

Aluminum

0.110

0.126

0.138

0.157

0.177

0.197

0.236

2.79

3.20

3.50

3.99

4.50

5.00

5.99

3.75

4.31

4.13

3.94

4.13

3.75

3.75

4.00

3.70

3.85

4.22

2.16 54.9

2.16

2.00

2.00

95.2
109
105
100
105

95.2

95.2
102

94.0

97.8
107

54.9

50.8

50.8

(2)

TYPE

MAXIMUM INLET PRESSURE

psig bar psig bar psig bar

161AY 150 10.3 150 10.3

161EB and 161EBH 1500 103 1200 82.7

161AYM 150 10.3 150 10.3 150 10.3

161EBM and 161EBHM 1500 103 1200 82.7 1500 103

PRX Series 1480 102 1480 102 1480 102

1. Maximum pressure to prevent the casings from bursting during abnormal operation (leaking to atmosphere and internal parts damage may occur).

Table 3. Pilot Pressure Ratings

MAXIMUM EMERGENCY OUTLET PRESSURE OR

MAXIMUM EMERGENCY SENSE PRESSURE

MAXIMUM BLEED (EXHAUST) PRESSURE

(1)

FOR MONITOR PILOTS

- - - -

3

Type EZR

Table 4. Main Valve Minimum Differential Pressures

MAIN VALVE

BODY SIZE,

NPS / DN

1 and 1-1/4 x 1 /

25 and 32 x 25

2 x 1 / 50 x 25

2 / 50

3 / 80

4, 6 x 4 and, 8 x 4 /

100, 150 x 100

and 200 x 100

6, 8 x 6 and

12 x 6 /

150, 200 x 150

and 300 x 150

8 / 200

1. See Table 1 for structural design ratings, Table 3 for pilot ratings and Table 10 for maximum pressure ratings.

2. The yellow spring is only recommended for inlet pressures under 100 psig / 6.9 bar.

3. The red, black, purple, red stripe and black with white stripe springs are only recommended for applications where the maximum inlet pressure can exceed 500 psig / 34.5 bar.

4. 18B5955X012 (Red) is used on constructions with travel indicator while GE05504X012 (Purple) is used on non-travel indicator constructions.

MAIN SPRING PART

NUMBER AND
COLOR CODE

19B2400X012, Light Blue 17E68 and 17E88 24 1.7 29 2.0 31 2.2 24 1.7 31 2.2 40 2.8

GE12727X012, Black

19B2401X012,

Black with White Stripe

19B2400X012, Light Blue 17E68 and 17E88 24 1.7 29 2.0 31 2.2 24 1.7 31 2.2 40 2.8

19B2401X012,

Black with White Stripe

GE12501X012,

Red Stripe

19B0951X012, Yellow

18B2126X012, Green

18B5955X012, Red

GE05504X012, Purple

T14184T0012, Yellow

19B0781X012, Light Blue

19B0782X012, Black

T14184T0012, Yellow

18B8501X012, Green

18B8502X012, Red

19B0364X012, Yellow

19B0366X012, Green

19B0365X012, Red

GE09393X012, Yellow

GE09397X012, Red

(3)

(3)

(2)

(3)(4)

(3)(4)

(2)

(3)

(2)

(3)

(2)

(3)

(2)

(3)

DIAPHRAGM

MATERIAL

17E97 35 2.5 38 2.7 42 2.9 35 2.5 39 2.7 52 3.6

17E68 and 17E88 30 2.1 35 2.4 39 2.7 30 2.1 36 2.5 52 3.6

17E88 and 17E97 43 3.0 50 3.4 56 3.9 43 3.0 53 3.7 68 4.7

17E97 43 3.0 50 3.4 56 3.9 43 3.0 53 3.7 68 4.7

17E68 and 17E88 43 3.0 50 3.4 56 3.9 43 3.0 53 3.7 68 4.7

17E97 68 4.7 73 5.0 88 6.1 72 5.0 81 5.6 102 7.0

17E68 and 17E88 12 0.83 15 1.0 15 1.0 12 0.83 25 1.7 20 1.4

17E97 24 1.7 25 1.7 26 1.8 24 1.7 30 2.1 37 2.6

17E68 and 17E88 18 1.2 20 1.4 22 1.5 19 1.3 26 1.8 28 1.9

17E88 and 17E97 29 2.0 29 2.0 31 2.1 31 2.1 35 2.4 43 3.03

17E68 and 17E88 16 1.1 19 1.3 24 1.7 23 1.6 23 1.6 29 2.0

17E97 23 1.6 23 1.6 23 1.6 23 1.6 23 1.6 25 1.7

17E68 and 17E88 21 1.5 22 1.5 28 1.9 28 1.9 28 1.9 33 2.3

17E88 and 17E97 32 2.2 33 2.3 43 3.0 38 2.6 38 2.6 50 3.4

17E68 and 17E88 10 0.69 12 0.83 14 0.97 25 1.7 25 1.7 25 1.7

17E97 16 1.1 17 1.2 21 1.5 34 2.3 34 2.3 34 2.3

17E68 and 17E88 16 1.1 17 1.2 20 1.4 30 2.1 30 2.1 30 2.1

17E88 and 17E97 21 1.5 24 1.7 26 1.8 40 2.8 40 2.8 40 2.8

17E97 10 0.69 11 0.76 14 0.97 12 0.83 16 1.1 16 1.1

17E88 10 0.69 13 0.90 13 0.90 12 0.83 21 1.5 21 1.5

17E97 14 0.97 22 1.5 22 1.5 19 1.3 29 2.0 29 2.0

17E88 17 1.2 21 1.5 21 1.5 20 1.4 36 2.5 36 2.5

17E88 and 17E97 23 1.6 29 2.0 29 2.0 30 2.1 41 2.8 41 2.8

17E97

100% Trim 60% Trim 30% Trim 100% Trim 60% Trim 30% Trim

psi bar psi bar psi bar psi bar psi bar psi bar

16 1.1

26 1.8 30 2.1

MINIMUM DIFFERENTIAL, PERCENT OF CAGE CAPACITY

FOR 90% CAPACITY FOR 100% CAPACITY

- - - - - - - -

(1)

19 1.3

- - - - - - - -GE09396X012, Green 20 1.4 23 1.6

Principle of Operation

As long as the outlet (control) pressure is above
the outlet pressure setting, the pilot valve plug or
disk remains closed (Figure 2). Force from the main
spring, in addition to inlet pressure bleeding through
the Type 112 restrictor (the restrictor is integral in
the PRX Series pilots), provides downward loading
pressure to keep the main valve diaphragm and plug
assembly tightly shutoff.

When the outlet pressure decreases below the pilot
outlet pressure setting, the pilot plug or disk assembly
opens. Loading pressure bleeds downstream through
the pilot faster than it can be replaced through the

4

Type 112 restrictor. This reduces loading pressure on
top of the main valve diaphragm and plug assembly.
The force imbalance on the diaphragm allows the inlet
pressure to overcome the loading pressure and main
spring force and open the Type EZR diaphragm and
plug assembly.

As the outlet pressure rises toward the outlet pressure
setting, it compresses the pilot diaphragm against the
pilot control spring and allows the pilot valve plug or
disk close. Loading pressure begins building on the
Type EZR diaphragm and plug assembly. The loading
pressure, along with force from the main spring,
pushes the diaphragm and plug assembly onto the
tapered-edged seat, producing tight shutoff.

2

U

N

R

S

T

A

R

T

4

6

8

Type EZR

FLOW DIRECTION

B2625_2

161AY SERIES PILOT

TYPE 112 RESTRICTOR

TYPE 252 PILOT
SUPPLY FILTER

W7438_07/2008

TYPE EZR WITH TYPES 161EB PILOT, 112 RESTRICTOR AND 252 FILTER

161EB SERIES PILOT

MAIN SPRING

DIAPHRAGM AND
PLUG ASSEMBLY

E0790_09/2006

INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
LOADING PRESSURE

TYPE 252 SUPPLY FILTER

FLOW DIRECTION

TYPE EZR WITH PRX SERIES PILOT AND TYPE 252 FILTER

RESTRICTOR

PORT S

PORT L

MAIN SPRING

DIAPHRAGM AND
PLUG ASSEMBLY

Figure 2. Type EZR Operational Schematic

TYPE PRX PILOT

DAMPER

PORT B

PORT A

5

Type EZR

INLET

SUPPLY PRESSURE LINE

B2605_A

INLET

SUPPLY PRESSURE LINE

B2605_B

BLOCK VALVE

CONTROL LINE

RESTRICTOR

161 SERIES SINGLE PILOT INSTALLATION WITH PILOT EXHAUST INTO CONTROL LINE

BLOCK VALVE

RESTRICTOR

161 SERIES SINGLE PILOT INSTALLATION WITH SEPARATE PILOT EXHAUST LINE

161 SERIES
PILOT

161 SERIES PILOT

PILOT
EXHAUST

CONTROL LINE

BLOCK VALVE

BLOCK VALVE

OUTLET

HAND VALVE

ALTERNATE CONTROL LINE

OUTLET

HAND VALVE

ALTERNATE CONTROL LINE

BLOCK VALVE

INLET

SUPPLY PRESSURE LINE

TYPE PRX SINGLE-PILOT INSTALLATION WITH SEPARATE PILOT EXHAUST LINE

Figure 3. Typical Type EZR Single Installation Schematics

Type EZR Installation

WARNING

!

Personal injury, equipment damage or
leakage due to escaping gas or bursting
of pressure-containing parts may result
if this regulator is overpressured or is
installed where service conditions could

exceed the limits given in Specications

section on page 2 or where conditions
exceed any ratings of the adjacent
piping or piping connections.

TYPE PRX PILOT

BLOCK VALVE

OUTLET

PILOT
EXHAUST

CONTROL LINE

HAND VALVE

ALTERNATE CONTROL LINE

To avoid such injury or damage, provide
pressure-relieving or pressure-limiting
devices (as required by the appropriate
code, regulation or standard) to
prevent service conditions from
exceeding limits.

Additionally, physical damage to the
regulator could break the pilot off the
main valve, causing personal injury and
property damage due to escaping gas.
To avoid such injury and damage, install
the regulator in a safe location.

6

Type EZR

All Installations

The robust design of the Type EZR allows this
regulator to be installed indoors or outdoors. When
installed outdoors, the Type EZR does not require
protective housing. This regulator is designed
to withstand the elements. The powder paint
coating protects against minor impacts, abrasions
and corrosion.

When installed indoors, no remote venting is required
except on the pilot spring case. This regulator can

also be installed in a pit that is subject to ooding

by venting the pilot spring case above the maximum

possible ood level so the pilot setting can be

referenced at atmospheric pressure.

1. Only personnel qualied through training and
experience should install, operate and maintain a
regulator. Before installation, make sure that there
is no damage to or debris in the regulator. Also,
make sure that all tubing and piping are clean
and unobstructed.

Note

The Type EZR optional inlet strainer is
intended to prevent occasional large
particles from entering the main valve.
If the gas contains continuous particles,

upstream ltration is recommended.

When using an inlet strainer (key 23), do
not use the shim (key 23) and vice versa.

2. Type EZR regulator may be installed in any

orientation, as long as ow through the regulator

matches the direction of the arrow on the main
valve body. However, for easier maintenance,
install the regulator with the bonnet up.

CAUTION

When installing a Type EZR trim package

in an existing E-body, make sure ow is

up through the center of the cage and
down through the cage slots. In some

cases, correct ow path is achieved

by removing the body from the line
and turning it around. If this is done,

change the ow arrow to indicate the

correct direction. Damage may result

if ow is not in the correct direction.

After assembly, check the regulator for
shutoff and leakage to atmosphere.

Types EZR/399 restricted trim bodies
(NPS 6 x 4, 8 x 4, 8 x 6 and 12 x 6 /
DN 150 x 100, 200 x 100, 200 x 150 and

300 x 150) are different than EW valve
bodies and are not interchangeable.
Install trims only in correct restricted
trim bodies.

3. The standard pilot mounting position is as shown in
Figure 1. Other mounting positions are available.

4. Apply a good grade of pipe compound to the
external pipeline threads for a threaded body or

use suiTable line gaskets for a anged body. When

installing butt weld end connections, remove trim
before welding and make sure to use approved
welding practices. Use approved piping procedures
when installing the regulator.

CAUTION

A regulator may vent some gas to
the atmosphere. In hazardous or

ammable gas service, vented gas may

accumulate and cause personal injury,

death or property damage due to re

or explosion.

Vent a regulator in hazardous gas
service to a remote, safe location away
from air intakes or any hazardous
location. Protect the vent line or
stack opening against condensation
or clogging.

5. A clogged pilot spring case vent may cause the
regulator to function improperly. To prevent plugging
(and to keep the spring case from collecting moisture,
corrosive chemicals or other foreign material) point
the vent down, orient it to the lowest possible point
on the spring case or otherwise protect it. Inspect the
vent regularly to make sure it has not been plugged.
To remotely vent a spring case, remove the vent
and install obstruction-free tubing or piping into the
1/4 NPT vent tapping. Provide protection on a remote
vent by installing a screened vent cap onto the
remote end of the vent pipe. The 161AY Series pilot
has a vent restriction (key 55, Figure 20) to enhance

low ow stability. Do not remove this restriction.

WARNING

!

To avoid freeze-up because of pressure
drop and moisture in the gas, use
antifreeze practices, such as heating the
supply gas or adding a de-icing agent to
the supply gas.

7

Type EZR

INLET

SUPPLY
PRESSURE LINE

INLET

SUPPLY
PRESSURE LINE

BLOCK VALVE

161 SERIES PILOT

RESTRICTOR

UPSTREAM REGULATOR

SUPPLY
PRESSURE
LINE

RESTRICTOR

DOWNSTREAM
REGULATOR

161 SERIES
PILOT

CONTROL LINE

BLOCK VALVE

CONTROL
LINE

ALTERNATE
CONTROL LINE

161 SERIES WIDE-OPEN MONITORING SYSTEM INSTALLATION

B2605_C

BLOCK VALVE

161 SERIES PILOT

RESTRICTOR

UPSTREAM REGULATOR

SUPPLY
PRESSURE
LINE

PILOT
EXHAUST

RESTRICTOR

DOWNSTREAM
REGULATOR

161 SERIES
PILOT

CONTROL LINE

BLOCK VALVE

CONTROL
LINE

OUTLET

ALTERNATE
CONTROL LINE

161 SERIES WIDE-OPEN MONITORING SYSTEM INSTALLATION WITH PILOT EXHAUST TO INTERMEDIATE PRESSURE

OUTLET

HAND VALVE

HAND VALVE

HAND
VALVE

HAND
VALVE

INLET

SUPPLY
PRESSURE LINE

B2605_D

INLET

SUPPLY
PRESSURE LINE

BLOCK VALVE BLOCK VALVE

RESTRICTOR

161 SERIES
MONITOR PILOT

MONITOR REGULATOR

CONTROL LINE

161 SERIES WORKING PILOT

SUPPLY
PRESSURE
LINE

CONTROL LINE

WORKING
REGULATOR

RESTRICTOR

161 SERIES
PILOT

ALTERNATE
CONTROL LINE

OUTLET

161 SERIES WORKING MONITORING SYSTEM INSTALLATION

BLOCK VALVE

TYPE PRX
PILOT

UPSTREAM REGULATOR

SUPPLY
PRESSURE
LINE

PILOT
EXHAUST

TYPE PRX
PILOT

CONTROL LINE

DOWNSTREAM
REGULATOR

BLOCK VALVE

ALTERNATE
CONTROL LINE

TYPE PRX WIDE-OPEN MONITORING SYSTEM INSTALLATION

Figure 4. Typical Type EZR Monitoring System Installation Schematics

HAND VALVE

OUTLET

HAND
VALVE

HAND
VALVE

HAND
VALVE

8

Type EZR

INLET

SUPPLY
PRESSURE LINE

TYPE PRX WIDE-OPEN MONITORING SYSTEM INSTALLATION WITH PILOT EXHAUST TO INTERMEDIATE PRESSURE

INLET

SUPPLY
PRESSURE LINE

(1) PLUGGED

BLOCK VALVE

BLOCK VALVE

TYPE PRX-120
WORKING PILOT

Figure 4. Typical Type EZR Monitoring System Installation Schematics (continued)

TYPE PRX
PILOT

UPSTREAM REGULATOR

TYPE PRX
SUPPLY
PRESSURE
LINE

PILOT
EXHAUST

MONITOR REGULATOR

A

L

B

(1)

L

S

A

S

TYPE PRX WORKING MONITOR SYSTEM INSTALLATION

B

TYPE PRX-125
MONITOR PILOT

PILOT

SUPPLY
PRESSURE
LINE

CONTROL LINE

CONTROL LINE

DOWNSTREAM
REGULATOR

WORKING
REGULATOR

BLOCK VALVE

OUTLET

ALTERNATE
CONTROL LINE

BLOCK VALVE

OUTLET

ALTERNATE
CONTROL LINE

HAND
VALVE

HAND
VALVE

HAND
VALVE

HAND
VALVE

6. As shown in Figure 3, run a supply pressure line
from the upstream pipeline to the restrictor inlet
(use 3/8 NPT outer diameter tubing or larger).

Install a Type 252 pilot supply lter upstream of

the restrictor, if needed, to keep the supply source
from clogging the restrictor or pilot. Inspect and

clean this lter regularly to make sure it has not

been plugged.

7. Install a downstream pressure control line (as
shown in the appropriate view of Figure 3) to the
pilot control line connection. Connect the other
end of the control line at a minimum of 8 to 10 pipe
diameters downstream of the regulator in a straight
run of pipe. Do not place a control line connection in
a turbulent area, such as in or directly downstream

of a swage or elbow. Signicant restrictions in

the control line can prevent proper pressure
registration. When using a hand valve, it should be

a full ow valve, such as a full port ball valve. With

a Type 161EBM, 161EBHM or 161AYM pilot or a
PRX Series pilot, run a downstream exhaust bleed
line to the downstream bleed line connection in the
pilot body assembly.

8. Good piping practices usually require swaging up
to larger downstream piping to obtain reasonable

downstream uid velocity.

Wide-Open Monitor Installations

1. Follow the procedures in the All Installations
section and then continue with step 2 of
this section.

2. Pilot supply for the downstream monitoring regulator
must be obtained between the two regulators as
shown in Figure 4. For sizing purposes, add the
minimum differential pressure for each regulator
together to establish the required pressure drop
across the station.

3. In a wide-open Type EZR monitoring system, system
lockup will be that of the worker regulator on both an
upstream monitor when the upstream pilot exhaust is
piped to the intermediate pressure and a downstream
monitor with upstream pilot exhaust piped to either
intermediate pressure or outlet pressure. With these

congurations, the diaphragm of the monitor regulator

will change position with every load change. On an
upstream monitor with the upstream pilot exhaust
piped to downstream, lockup will occur at the
monitor’s setpoint and the diaphragm of the monitor
regulator will be fully open during normal conditions.

9

Type EZR

TYPE PRX/120

M1001_05/2016

INLET PRESSURE

OUTLET PRESSURE

ATMOSPHERIC PRESSURE

LOADING PRESSURE

INTERMEDIATE PRESSURE

INLET

FILTER

PILOT

S

L

A

TYPE PRX:

S- SUPPLY PORT
B- BLEED PORT
L- LOADING PORT
A - SENSING PORT

Figure 5. Type EZR-PRX-PRX Working Monitor Schematic

TYPE PRX/125

PILOT

B

S

A

INTERMEDIATE

Working Monitor Installations

On working monitor installations, the working monitor

regulator is always upstream and acts as a rst-stage

regulator through the working pilot during normal
operation. This arrangement allows the working
monitor’s performance to be observed at all times.
Then, should the second-stage regulator fail open,
the working monitor regulator assumes the entire
pressure reduction function of the system through the
monitoring pilot.

Use the following procedure when installing a working
monitor system.

1. Follow the procedures in the All Installations
section and then continue with step 2 of
this section.

2. Pilot supply pressure for the downstream
Type EZR regulator must be made directly
upstream of the Type EZR using
intermediate pressure.

3. Table 9 gives the spread between normal
distribution pressure and the minimum pressure at
which the monitor pilot can be set to take over if
the working regulator fails open.

4. Table 4 shows the minimum differential pressure
requirements across an individual regulator.

Because this application uses a rst-stage

TYPE PRX/120

PILOT

FILTER

B

S

L

B

A

OUTLET

and second-stage pressure reduction, add the
minimum differential pressure for each regulator
together to establish the required pressure drop
across the station. Do not exceed maximum pilot
ratings given in Table 3.

For Type PRX Working Monitor

As shown in Figure 5, run a supply pressure line
(use 3/8 NPT outer diameter tubing or larger) from the
upstream pipeline to the inlet (Port S) of the upstream
Type PRX-120 pilot. Install a Type 252 pilot supply

lter upstream of the pilot, if needed, to keep the

supply source from clogging the restrictor in the pilot.

Inspect and clean this lter regularly to make sure it

has not been plugged.

Connect the loading port (Port L) of the upstream
Type PRX-120 pilot to the bonnet of the upstream
Type EZR regulator. Connect the “B” port of the upstream
Type PRX-120 pilot to the “S” port of the upstream
Type PRX-125 pilot. Connect the “A” port (located on the
underside of the pilot) of the upstream Type PRX-120 pilot

to the intermediate pressure between the rst and second

Type EZR regulators as shown in Figure 5.

The “L” port of the upstream Type PRX-125 pilot is
plugged. Connect the “B” port of upstream
Type PRX-125 pilot to the intermediate pressure

between the rst and second Type EZR regulators.

10

Connect the “A” port of upstream Type PRX-125 pilot
downstream of both regulators.

The pilot supply pressure connection for the
downstream Type EZR regulator must be directly
upstream of the Type EZR using intermediate pressure
and connected to the “S” port of the downstream

Type PRX-120. Install a Type 252 pilot supply lter

upstream of the pilot, if needed, to keep the supply
source from clogging the restrictor in the pilot. Inspect

and clean this lter regularly to make sure it has not

been plugged. Connect the loading port (Port L) of the
downstream Type PRX-120 pilot to the bonnet of the
downstream Type EZR regulator. Connect the “A” and
“B” ports of the downstream Type PRX-120 pilot to
downstream pressure.

Startup and Adjustment

Note

Table 10 shows the maximum inlet

and differential pressures for specic

constructions. Use pressure gauges to
monitor inlet pressure, outlet pressure
and any intermediate pressure
during startup.

CAUTION

To prevent damage to the Type PRX pilot
during startup, the sense and bleed lines
of the Type PRX should be located on the
same side of the downstream block valve.
Keep sense and bleed lines separate.

Startup for Both Single-Regulator and
Monitoring Installations

1. Make sure all block and vent valves are closed.

2. Back out the pilot adjusting screw(s).

3. For easy initial startup, set the restrictor to the “8”
position. For future startups, the restrictor can be
left in the desired run position.

4. SLOWLY OPEN the valves in the following order:
a. Pilot supply and control line valve(s), if used
b. Inlet block valve
c. Outlet block valve

5. For a 161 Series pilot with Type 112 restrictor,
turn the restrictor(s) to position “2” or to the
desired run position. For a PRX Series pilot, turn
the restrictor screw 1 turn counterclockwise from
fully seated (turn restrictor fully clockwise then
1 turn counterclockwise) and the damper screw
fully counterclockwise.

Type EZR

W4559_1

Figure 6. Restrictor Adjustment

6. For a single regulator, set the pilot to the desired
outlet (control) pressure according to the pilot
adjustment procedure.

For a wide-open downstream monitor
installation, adjust the upstream working pilot until

intermediate pressure is higher than the desired
setpoint of the monitor pilot. Adjust the downstream
monitoring pilot to the desired monitoring takeover
pressure. Reduce the upstream pilot to the normal
outlet pressure setting.

For a wide-open upstream monitor installation,
adjust the downstream working pilot to a setpoint
higher than the setpoint of the monitor pilot.
Adjust the upstream monitoring pilot to the desired
monitor takeover pressure. Reduce the downstream
pilot setting to normal outlet pressure setting.

For a working monitor installation, turn out the
adjusting screw of the downstream pilot, removing
spring tension. Adjust the upstream working pilot
to the desired intermediate pressure setting.
Turn out the adjusting screw of the upstream
monitor pilot, removing spring tension. Turn in
the adjusting screw of the downstream pilot.
Adjust the upstream monitor pilot to the desired
setpoint taking into account the guidelines shown

in Table 9. Establish nal desired downstream

pressure by adjusting the downstream pilot.

Pilot Adjustment

For 161 Series pilots, remove the pilot closing cap

(key 16, Figure 19 or key 22, Figure 20) and, on
161EB Series only, loosen the locknut (key 12,
Figure 19). Turn the adjusting screw (key 11,
Figure 19 or key 35, Figure 20) into the spring case
(key 2, Figure 19 or key 3, Figure 20) to increase the
downstream pressure. Turn the adjusting screw out of
the spring case to decrease the downstream pressure.

11

Type EZR

Table 5. 161EB Series Pilot Adjustment Recommendations

PILOT TYPE

161EB Series Pilots Restrictor Setting of “5” or greater

Note: Higher Type 112 restrictor settings will increase proportional band. Adjustment of the Type 112 restrictor will also cause a shift in setpoint. Setpoint should be checked and adjusted
following restrictor setting adjustment.

RECOMMENDED TYPE 112 RESTRICTOR

SETTINGS FOR LOW FLOW OPERATION

Table 6. Type 161AY/161AYM Pilot Adjustment Recommendations

PILOT TYPE

161AY Series Pilots Restrictor Setting of “5” or greater

Note: Higher Type 112 restrictor settings will increase proportional band. Adjustment of the Type 112 restrictor will also cause a shift in setpoint. Setpoint should be checked and adjusted
following restrictor setting adjustment.

RECOMMENDED TYPE 112

RESTRICTOR SETTINGS FOR LOW

FLOW OPERATION

RECOMMENDED ORIFICE SIZE(S)

FOR LOW FLOW OPERATION

3/32 or 1/8 in. / 2.38 or 3.18 mm

(3/32 in. / 2.38 mm is standard)

Table 7. Type PRX Pilot Adjustment Recommendations

TYPE 112 RESTRICTOR SETTINGS TO AVOID

AT LOW FLOW

Avoid restrictor setting of “2” or less if continuous

ows are expected to be less than 5%

of maximum capacity

TYPE 112 RESTRICTOR SETTINGS

AND ORIFICE SIZES TO AVOID AT

LOW FLOW

Avoid restrictor setting of “2” or less if

continuous ows are expected to be

less than 5% of maximum capacity

PILOT TYPE

PRX/120 and PRX/120-AP Series

Note: Counterclockwise adjustment of the Type PRX restrictor screw will increase proportional band. Adjustment of the restrictor screw will also cause a shift in setpoint. Setpoint should
be checked and adjusted following restrictor screw adjustment.

RECOMMENDED TYPE PRX RESTRICTOR AND DAMPER

SCREW SETTINGS FOR LOW FLOW OPERATION

Restrictor Screw

- 1 turn out (counterclockwise) from fully seated for most

low ows

- 2-1/2 turns out (for ows less than

5% of maximum)

Damper Screw

- Fully out (counterclockwise) from seated for most

low ows

- One turn out (for ows less than 5% of maximum)

For PRX Series pilots (Figure 26), loosen locknut
(key 2) and turn the adjusting screw into the spring case
to increase (or out of the spring case to decrease) the
downstream pressure. When the required downstream
pressure is maintained for several minutes, tighten the
locknut to lock the adjusting screw in position
and replace the pilot closing cap.

The Restrictor and Damper screws on the PRX Series
pilot control the regulator’s proportional band (droop)
and speed of response. Table 7 includes the appropriate

settings for low ow operation. For additional tuning

follow the steps outlined below:

1. Start with the restrictor screw 1 turn
counterclockwise from fully seated (turn restrictor
fully clockwise then 1 turn counterclockwise) and
the damper screw fully counterclockwise.

2. Turn damper screw clockwise until desired

performance is achieved. This reduces the ow

path of the damper. If the damper becomes fully
seated (no longer able to turn clockwise) and the
desired performance has not been achieved, return
the damper screw to the fully counterclockwise position.

The damper screw should not be left in
the fully seated position, as it will lock
the regulator in last position which could
cause incorrect pressure regulation.

3. Turn the restrictor screw an additional turn
counterclockwise from fully seated. This increases

the ow path of the restrictor. If additional tuning

is required, repeat step 2. Follow this method until
desired performance is achieved.

Type 112 Restrictor Adjustment

The Type 112 restrictor controls the regulator’s
proportional band (droop) and speed of response.

The restrictor can be used to ne tune the regulator

for maximum performance by decreasing the restrictor
setting for tighter control (increased opening speed,
decreased closing speed); or increasing the restrictor
setting for maximum stability (decreased opening speed,
increased closing speed). A lower setting also provides a

TYPE PRX RESTRICTOR AND DAMPER SCREW

SETTINGS TO AVOID AT LOW FLOW

Restrictor Screw

- Fully seated (clockwise) or full out
(counterclockwise)

WARNING

!

Damper Screw

- Full in (clockwise)

narrower proportional band for better accuracy.

12

Type EZR

Table 8. Diaphragm Material Selection Information

17E68

NITRILE (NBR)

Gas Temperature
(for lower temperatures

contact your local Sales Ofce)

General Applications Best for cold temperatures.

Heavy Particle Erosion Fair Excellent Good

Natural Gas With:

Up to 3% aromatic
hydrocarbon content

3 to 15% aromatic
hydrocarbon content

15 to 50% aromatic
hydrocarbon content

Up to 3% H

sulde or sour gas)

Up to 3% ketone Fair Fair

Up to 10% alcohol Good Good

Up to 3% synthetic lube Fair Fair Good

1. The NPS 6 / DN 150, 17E97 diaphragm will perform in gas temperatures as low as -20°F / -29°C.

2. For differential pressures above 400 psig / 27.6 bar diaphragm temperature is limited to 150°F / 66°C.

3. The aromatic hydrocarbon content is based on percent volume.

(3)

(3)

(3)

S (hydrogen

2

-20 to 150°F / -29 to 66°C 0 to 150°F / -18 to 66°C 0 to 260°F / -18 to 127°C

Best for high pressure conditions, i.e.
transmission service or high pressure

industrial service. It is also the best for

abrasive or erosive service applications.

Good Excellent

Poor Good

Not recommended Poor

Good Good Good

NITRILE (NBR)

17E97

(1)

FLUOROCARBON (FKM)

Best for natural gas having aromatic

hydrocarbons. It is also the best for high

17E88

temperature applications.

Excellent

Fair

(2)

Table 9. Type EZR Working Monitor Performance

MONITORING PILOT MINIMUM PRESSURE OVER NORMAL DISTRIBUTION

Construction Outlet (Control) Pressure Range Spring Part Number

6 to 15 in. w.c.

Type 161AY or

161AYM

Type 161EBM

Type 161EBHM

1. Monitor pilot minimum setpoint was determined with a pressure drop ranging from 50 to 150 psig / 3.5 to 10.3 bar. Approximately double the minimum monitor pilot setpoint.

0.5 to 1.2 psig

1.2 to 2.5 psig

2.5 to 4.5 psig

4.5 to 7 psig

5 to 15 psig
10 to 40 psig
30 to 75 psig

70 to 140 psig
130 to 200 psig
200 to 350 psig

250 to 450 psig
400 to 700 psig

The “8” position has the largest ow, is most stable and

easiest for startup, however, using the “8” position
is not necessary. The “0” setting has the smallest

(minimum) ow passage; at no point of rotation will the

Type 112 restrictor be completely shut off. After initial
adjustment, the restrictor does not need to be adjusted
for maintenance or startup.

15 to 37 mbar
34 to 83 mbar

83 mbar to 0.17 bar

0.17 to 0.31 bar

0.31 to 0.48 bar

0.34 to 1.0 bar

0.69 to 2.8 bar

2.1 to 5.2 bar

4.8 to 9.7 bar

9.0 to 13.8 bar

13.8 to 24.1 bar

17.2 to 31.0 bar

27.6 to 48.3 bar

1B653927022
1B537027052
1B537127022
1B537227022
1B537327052

17B1260X012
17B1262X012
17B1259X012
17B1261X012
17B1263X012
17B1264X012

17B1263X012
17B1264X012

maximum possible ow through the regulator but does
not improve low ow performance. During design of a

regulator installation, the downstream piping volume
should be maximized. Control lines should not be located
in or near piping sections that may experience turbulent

ow, such as elbows or swages. Larger diameter control
lines are also recommended in low ow conditions. The

PRESSURE AT WHICH MONITOR PILOT CAN BE SET

WITH A RESTRICTOR SETTING OF 2

1 in. w.c.
1 in. w.c.

0.5 psig

0.5 psig

0.5 psig

0.5 psig

0.5 psig

0.6 psig

1.3 psig

1.5 psig
3 psig

3.5 psig
7 psig

2 mbar

2 mbar
34 mbar
34 mbar
34 mbar

34 mbar
34 mbar
41 mbar
90 mbar

0.10 bar

0.21 bar

0.24 bar

0.48 bar

larger control lines are less restrictive and will reduce pilot

Low Flow Application Considerations

For stable, low ow operation, other considerations

besides pilot settings should also be addressed.

Installation of an oversized regulator may make low ow
operation difcult. When possible, a smaller-sized

Type EZR should be installed. Reduced capacity trim
reduces relief valve requirements by decreasing the

exhaust bleed backpressure to the pilot that may cause
instability. Separate sense and exhaust lines may also

help at low ow conditions. This feature is provided on

the PRX Series, Types 161EBM, 161EBHM and 161AYM
pilots. Control line taps should be located in straight pipe;
several pipeline diameters (8 to 10 of largest piping on
outlet) downstream of the regulator. These guidelines

have been used to improve station stability at low ow.

(1)

(1)

(1)

(1)

(1)

(1)

(1)

(1)

(1)

(1)

(1)

13

Type EZR

Table 10. Main Valve Maximum Pressure Ratings, Diaphragm Selection Information and Main Spring Selection

BODY SIZE

NPS / DN

DIAPHRAGM

MATERIAL

MAXIMUM

OPERATING INLET

PRESSURE

(4)

MAXIMUM

OPERATING

DIFFERENTIAL

PRESSURE

(4)

MAXIMUM
EMERGENCY INLET
AND DIFFERENTIAL

PRESSURE

MAIN SPRING
COLOR CODE

(1)

DIAPHRAGM

DESIGNATION

psig bar psid bar d psid bar d

17E68 Nitrile (NBR)

Low temperature

17E97 Nitrile (NBR)

1 and 1-1/4 x 1 /

25 and 32 x 25

High pressure and/or erosion

resistance

17E88 Fluorocarbon (FKM)

High aromatic hydrocarbon

content resistance

17E68 Nitrile (NBR)

Low temperature

17E97 Nitrile (NBR)

2 x 1 / 50 x 25

High pressure and/or erosion

resistance

17E88 Fluorocarbon (FKM)

High aromatic hydrocarbon

content resistance

17E68 Nitrile (NBR)

Low temperature

17E97 Nitrile (NBR)

2 / 50

High pressure and/or erosion

resistance

17E88 Fluorocarbon (FKM)

High aromatic hydrocarbon

content resistance

17E68 Nitrile (NBR)

Low temperature

17E97 Nitrile (NBR)

3 / 80

High pressure and/or

erosion resistance

17E88 Fluorocarbon (FKM)

High aromatic hydrocarbon

content resistance

17E68 Nitrile (NBR)

Low temperature

4, 6 x 4

and 8 x 4 /

100, 150 x 100

and 200 x 100

17E97 Nitrile (NBR)

High pressure and/or

erosion resistance

17E88 Fluorocarbon (FKM)
High aromatic hydrocarbon

content resistance

17E97 Nitrile (NBR)

6, 8 x 6

and 12 x 6 /

150, 200 x 150

and 300 x 150

High pressure and/or

erosion resistance

17E88 Fluorocarbon (FKM)
High aromatic hydrocarbon

content resistance

17E97 Nitrile (NBR)

8 / 200

High pressure and/or

erosion resistance

1. See Table 1 for main valve structural design ratings and Table 3 for pilot ratings.

2. The red, black, purple, red stripe and black with white stripe springs are only recommended for applications where the maximum inlet pressure can exceed 500 psig / 34.5 bar.

3. For differential pressures above 400 psid / 27.6 bar d diaphragm temperatures are limited to 150°F / 66°C.

4. These are recommendations that provide the best regulator performance for a typical application. Please contact your local Sales Ofce for further information if a deviation from the

standard recommendations is required.

100 6.9 100 6.9 100 6.9 Light Blue

460 31.7 400 27.6 460 31.7 Black

500 34.5 500 34.5 1050 72.4 Black

1050 72.4 800 55.2 1050 72.4

Black with White

Stripe

100 6.9 100 6.9 100 6.9 Light Blue

500 34.5 500 34.5

750 51.7 500 34.5

(3)

750 51.7 Black

(3)

750 51.7

Black with White

Stripe

100 6.9 100 6.9 100 6.9 Light Blue

360 24.8 300 20.7 360 24.8

500 34.5 500 34.5 500 34.5

Black with White

Stripe

Black with White

Stripe

1050 72.4 800 55.2 1050 72.4 Red Stripe

100 6.9 100 6.9 100 6.9 Light Blue

750 51.7 500 34.5

(3)

750 51.7

Black with White

Stripe

100 6.9 100 6.9 100 6.9 Yellow

460 31.7 400 27.6 460 31.7 Green

500 34.5 500 34.5 1050 72.4 Green

1050 72.4 800 55.2 1050 72.4 Red

(2)

or Purple

100 6.9 100 6.9 100 6.9 Yellow

(3)

500 34.5 500 34.5

750 51.7 500 34.5

750 51.7 Green

(3)

750 51.7 Red

(2)

or Purple

100 6.9 100 6.9 100 6.9 Yellow

360 24.8 300 20.7 500 34.5 Light Blue

500 34.5 500 34.5 1050 72.4 Light Blue

1050 72.4 800 55.2 1050 72.4 Black

100 6.9 100 6.9 100 6.9 Yellow

500 34.5 500 34.5

750 51.7 500 34.5

(3)

750 51.7 Light Blue

(3)

750 51.7 Black

100 6.9 100 6.9 100 6.9 Yellow

360 24.8 300 20.7 500 34.5 Green

500 34.5 500 34.5 1050 72.4 Green

1050 72.4 800 55.2 1050 72.4 Red

(2)

100 6.9 100 6.9 100 6.9 Yellow

(3)

500 34.5 500 34.5

750 51.7 500 34.5

750 51.7 Green

(3)

750 51.7 Red

(2)

100 6.9 100 6.9 100 6.9 Yellow

500 34.5 500 34.5 1050 72.4 Green

1050 72.4 800 55.2 1050 72.4 Red

(2)

100 6.9 100 6.9 100 6.9 Yellow

(3)

500 34.5 500 34.5

750 51.7 500 34.5

750 51.7 Green

(3)

750 51.7 Red

(2)

100 6.9 100 6.9 100 6.9 Yellow

500 34.5 500 34.5 1050 72.4 Green

1050 72.4 800 55.2 1050 72.4 Red

(2)

(2)

(2)

(2)

(2)

(2)

(2)

(2)

130

14

PILOT SUPPLY CONNECTION: 1/4 NPT PIPE
CONNECTS TO UPSTREAM PILOT SUPPLY TAP

Type EZR

LOADING CONNECTION: 1/4 NPT PIPE CONNECTS TO
TYPE EZR DIAPHRAGM LOADING PORT

OUTLET CONNECTION: 1/4 NPT PIPE
CONNECTS TO PILOT INLET CONNECTION

INLET 3/4 NPT CONNECTS
TO 1/4 NPT TYPE 112 OUTLET

B2609

11B5004-A

OPTIONAL LOADING CONNECTION:
1/4 NPT NORMALLY PLUGGED

TYPE 112

CONTROL LINE CONNECTION:
1/2 NPT PRESSURE
REGISTRATION ONLY. USE
3/8 NPT O.D. TUBING OR LARGER
FOR CONTROL LINE.

CONTROL LINE CONNECTION:
3/4 NPT PRESSURE
REGISTRATION AND PILOT
BLEED (EXHAUST). USE
3/4 NPT PIPE MINIMUM FOR
CONTROL LINE.

INLET 3/4 NPT
CONNECTS
TO 1/4 NPT
TYPE 112 OUTLET

TYPE 161AY TYPE 161AYM

PILOT BLEED (EXHAUST)
CONNECTION: 3/4 NPT. USE
1/2 NPT PIPE MINIMUM FOR BLEED
(EXHAUST) LINE.

INLET 1/4 NPT
CONNECTS
TO 1/4 NPT
TYPE 112 OUTLET

21B5005-A

IN

TYPES 161EB AND 161EBH TYPES 161EBM AND 161EBHM

1/4 NPT
NORMALLY PLUGGED

INLET 1/4 NPT

OUT

CONTROL LINE CONNECTION:
1/4 NPT PRESSURE
REGISTRATION AND PILOT BLEED
(EXHAUST). USE 3/8 NPT
O.D. TUBING LARGER FOR
CONTROL LINE.

CONNECTS
TO 1/4 NPT
TYPE 112 OUTLET

IN

Figure 7. Pilot Port Function and Connection Sizes

SENSE

OUT

CONTROL LINE CONNECTION:
1/4 NPT PRESSURE
REGISTRATION ONLY. USE
3/8 NPT O.D. TUBING OR LARGER
FOR CONTROL LINE.

PILOT BLEED (EXHAUST)
CONNECTION: 1/4 NPT. USE 3/8 NPT
O.D. TUBING OR LARGER FOR BLEED
(EXHAUST) LINE.

15

Type EZR

Shutdown for Both Single-Regulator and
Monitoring Installations

WARNING

!

If pilot supply pressure is shut down

rst, the downstream system may be

subjected to full inlet pressure.

1. If the pilot setting must be disturbed, be sure to
keep some tension on the spring. This will prevent
trapping inlet pressure during blow down.

2. Close the valves shown in Figure 3 or 4, in the
following order:

a. Inlet block valve
b. Outlet block valve
c. Control line valve(s), if used

3. Open the vent valves to depressurize the system.

Maintenance

Regulator parts are subject to normal wear and
must be inspected periodically and replaced as
necessary. Due to the care Emerson takes in meeting
all manufacturing requirements (heat treating,
dimensional tolerances, etc.), use only replacement
parts manufactured or furnished by Emerson. Also,
when lubrication is required, use a good quality
lubricant and sparingly coat the recommended part.
The frequency of inspection and parts replacement
depends upon the severity of service conditions,
applicable codes and government regulations and
company inspection procedures. Table 12 lists various
regulator problems and possible solutions for them.

Type EZR Main Valve Trim Parts

ELASTOMER/FABRIC

MATERIAL CODE

LOCATE INK CODE

BETWEEN RADII

MATERIAL

INK CODE

Figure 8. Diaphragm Markings

Table 11. Diaphragm Imprint Codes

STYLE MATERIAL

Imprint Ink Mark Imprint Ink Mark

2 17E68

2 130

4 17E88

5 17E97

THICKNESS

1

1

MANUFACTURER

CODE

1

1

1

1

CODE

YEAR OF MANUFACTURE

RADIAL LOCATION

TO LOCATE

IMPRINT CODE

1

1

DOME IDENTIFICATION

THICKNESS INK
CODE (USE ONE

LOCATION ONLY)

DIAPHRAGM MATERIAL

17E68 - Nitrile (NBR)

(low temperature)

17E88 - Fluorocarbon (FKM)

(high aromatic hydrocarbon

content resistance)

17E97 - Nitrile (NBR)
(high pressure and/or

erosion resistance)

Instructions are given for complete disassembly and
assembly. The main valve body may remain in the
pipeline during maintenance procedures. Key numbers
are referenced in Figures 14 through 18.

CAUTION

Avoid personal injury or damage to
property from sudden release of pressure
or uncontrolled gas or other process

uid. Before starting to disassemble,

carefully release all pressures according
to the Shutdown procedure. Use gauges
to monitor inlet and outlet pressures
while releasing these pressures.

16

Converting a Fisher™ E-Body to Type EZR

Remove all trim parts from the main valve and clean
the body interior. Then follow procedure in Assembly
section to convert a Fisher E-body to a Type EZR.

CAUTION

When installing a Type EZR trim package

make sure ow is up through the center

of the cage and down through the cage

slots. In some cases, correct ow path

is achieved by removing the body from
the line and turning it around. If this is

done, change the ow arrow to indicate

the correct direction. Damage may result

Type EZR

Table 12. Troubleshooting Guide

PROBLEM POSSIBLE SOLUTION

Outlet pressure suddenly rises above
setpoint and approaches inlet pressure

Outlet pressure normal at low ow but
falls below setpoint at high ow

Outlet pressure cycles

Gas escapes from pilot spring case • Replace pilot diaphragm assembly

Gas escapes from travel indicator • Replace indicator stem O-ring, if indicator is not desired, convert to a non-travel indicator assembly

Regulator unexpectedly closes or falls
below setpoint

Outlet pressure approaches inlet

pressure when no ow is desired

Regulator will not open

Regulator will not close

High lock-up pressure with slow shutdown • Check for debris on main valve or pilot seat

High lock-up pressure with fast shutdown • Adjust restrictor to a higher setting

Note: If you were unable to solve your problem using this troubleshooting guide, contact your local Sales Ofce.

• If travel indicator is in UP position, check restrictor and pilot supply lter for plugging

• If travel indicator is in DOWN position, check main valve for debris or diaphragm damage

• Check main valve inlet strainer for plugging

• Check inlet pressure at high ow condition

• Check sizing calculations to be sure main valve body is large enough for load

• Check for undersized or restricted control line (use the minimum size given in step 6 of All Installations of the
Type EZR Installation section).

• Adjust restrictor to a lower setting

• Adjust restrictor to a higher setting

• Check control line placement. Make sure it is not located in a turbulent area.

• Make sure there is not a restriction in the control line, such as a needle valve.

• Check pilot for ice. Moisture in the gas can cause ice to form and build up in the pilot, blocking the ow.

Heating the regulator or adding a de-icing agent will reduce the possibility of icing.

• Check main valve O-rings for damage or improper installation

• Check cage and diaphragm surfaces for erosion or trapped debris

• Check pilot valve plug and seat for seating surface damage or debris

• Check pilot for ice

• Check for clogged control line

• Make sure control line is installed and open

• Check for damage to the main valve diaphragm

• On new installations, make sure the control line and pilot supply are properly connected

• Make sure the pilot supply is properly connected

• Check restrictor for clogging

• Check the main valve diaphragm for damage

• Check for a broken control line

if ow is not in the correct direction. After

assembly, check the regulator for shutoff
and leakage to atmosphere.

Disassembly

Disassembly of Type EZR

1. Shutdown, isolate and depressurize the main
valve and pilot.

2. Remove travel indicator assembly or travel
indicator plug assembly using the Travel Indicator
Assembly Maintenance section.

3. Remove the cap screws (key 3). Lift up and
remove the bonnet (key 2) from the body (key 1).

Note

For the NPS 8 / DN 200 body, the

lifting ange (key 143) is capable

of supporting the full weight of the
regulator assembly and can be utilized
to lift bonnet if required.

4. Remove the diaphragm and plug assembly (key 9)
and bonnet O-ring (key 28). For NPS 2 x 1 /
DN 50 x 25 sizes, use a screwdriver to remove the
upper adaptor (key 131).

5. Pull out the cage (key 7), O-ring (key 8) and inlet
strainer or strainer shim (key 23) (if no strainer).
For NPS 2 x 1 / DN 50 x 25 sizes, remove the
lower adaptor (key 132).

6. Clean parts and replace if necessary. To change
the O-ring (key 121) on a 6 in. / 152 mm cage with
attached restrictor plate (key 71), remove cap screws
(key 126).

Assembly

1. Install the inlet strainer or shim (key 23) into the
body (key 1).

Note

When installing in a vertical orientation,
apply lubricant to the bottom of the inlet
strainer or strainer shim (key 23) to help
hold parts in place while installing cage.

2. Lightly lubricate and install the cage O-ring (key 8).

3. Apply lubricant lightly to all O-rings or the mating
part before installing them.

4. Install the cage (key 7) and lightly lubricate and
install the bonnet O-ring (key 28).

17

Type EZR

FLANGED
LOCKNUT

(KEY 13)

DIAPHRAGM
(KEY 9)

BOTTOM PLUG
(KEY 11)

O-RING

(KEY 70)

O-RING

(KEY 10)

Figure 9. Diaphragm and Plug Assembly Components

O-RING

(KEY 14)

TOP PLUG

(KEY 5)

To assemble a 6 in. / 152 mm cage with attached
restrictor plate (key 71), lightly lubricate the O-ring
(key 121) and place it on the restrictor plate.
Secure the cage to the restrictor plate with the
cap screws (key 126), using a torque of 10 to
12 ft-lbs / 14 to 16 N•m.

For NPS 2 x 1 / DN 50 x 25 sizes, the lower
adaptor (key 132) must be assembled on the cage
before placing in the body. Lightly lubricate the
lower adaptor O-rings (keys 121 and 67) and place

the lower adaptor on a at surface. Then press the

cage down into the lower adaptor.

5. Lubricate the top and bottom of the outer
edge (bead area) of the diaphragm and place
diaphragm and plug assembly (key 9) on the
cage (key 7) making sure the bead is in the cage
groove. Lubricate the top plug (key 5) recess. For
NPS 2 x 1 / DN 50 x 25 sizes, the upper adaptor
(key 131) must be placed on the cage before the
bonnet (key 2). Lightly lubricate the upper adaptor
O-ring (key 133) and then press the upper adaptor
onto the cage.

6. Prior to installing the travel indicator or travel indicator
plug, install the bonnet (key 2) in proper orientation.

CAUTION

8. Lightly lubricate the travel indicator assembly

threads and install the indicator tting (key 19) into

the bonnet (key 2, Figure 14), tighten to the proper
torque (see Table 13).

Diaphragm and Plug
Assembly Maintenance

The diaphragm and plug assembly can be
replaced as a single unit (a diaphragm cartridge) or
individual components within the assembly can be
replaced. When replacing individual components,
inspect each component for damage and wear
and replace parts as needed. Key numbers for the
following assembly and disassembly procedure are
referenced in Figures 9 and 14.

1. Place a screwdriver or similar tool through the hole
in the top plug (key 5).

2. Remove the anged locknut (key 13) from
the bottom plug (key 11). This loosens the
entire assembly.

Note

On NPS 1, 1-1/4 x 1 and 2 x 1 / DN 25,
32 x 25 and 50 x 25 bodies, remove the
socket head screw (key 129) and lock
washer (key 130) from the bottom plug.

Make sure to use a Type EZR
bonnet. The Type EZR bonnet is NOT
interchangeable with other Fisher™
E-body bonnets. Installing an improper
bonnet can result in stem assembly
breakage and unit failure. The bonnet

can be identied by the Type EZR

markings on the top.

7. Lubricate cap screws (key 3) and secure the
bonnet (key 2), using an even crisscross pattern. It
may be necessary to push down on bonnet to start
cap screws. Tighten cap screws to proper torque
(see Table 13).

18

3. Remove the bottom plug (key 11) and the bottom
plug O-ring (key 10).

4. Remove the diaphragm (key 9).

5. Remove the top plug O-rings (keys 14 and 70).

6. Check all components for damage or wear and
replace as necessary.

7. When reassembling, be sure to lubricate all O-rings
before installing.

8. Hold the top plug (key 5). Place the parts on the top
plug in the following order:

Type EZR

INDICATOR FITTING
(KEY 19)

HEX NUTS
INDICATOR COVER
(KEY 21)

BODY SIZE, NPS / DN

1 or 1-1/4 x 1 / 25 or 32 x 25 75 to 95 / 102 to 129 4 to 6 / 5.4 to 8.1 90 to 160 / 122 to 217 90 to 160 / 122 to 217

2 x 1 or 2 / 50 x 25 or 50 55 to 70 / 75 to 95 6 to 8 / 8.1 to 11 90 to 160 / 122 to 217 90 to 160 / 122 to 217

3 / 80 100 to 130 / 136 to 176 19 to 25 / 26 to 34 200 to 300 / 271 to 407 200 to 300 / 271 to 407

4, 6 x 4 or 8 x 4 /

100, 150 x 100 or 200 x 100

6, 8 x 6 or 12 x 6 /

150, 200 x 150 or 300 x 150

8 / 200 400 to 450 / 542 to 610 90 to 110 / 122 to 149 300 to 425 / 407 to 577 300 to 425 / 407 to 577

(KEY 4)

INDICATOR

INDICATOR

WASHER (KEY 20)

Cap Screw Flange Locknut Indicator Fitting Indicator Plug

160 to 210 / 217 to 285 19 to 25 / 26 to 34 200 to 300 / 271 to 407 200 to 300 / 271 to 407

275 to 300 / 373 to 407 50 to 100 / 68 to 136 300 to 425 / 407 to 577 300 to 425 / 407 to 577

O-RING (KEY 6)

Figure 10. Travel Indicator Parts

Table 13. Torque Values

O-RING

(KEY 18)

UPPER SPRING

SEAT (KEY 17)

BACK-UP

RINGS

(KEY 16)

TORQUE, FT-LBS / N•m

MAIN SPRING
(KEY 12)

INDICATOR STEM
(KEY 15)

WASHER (KEY 79)
(NPS 6 / DN 150 SIZE ONLY)

• O-ring (key 14)

• O-ring (key 70)

• Diaphragm (key 9)

• O-ring (key10)

• Bottom Plug (key 11)

• Flanged Locknut (key 13)

9. Reassemble in the reverse order. Tighten ange
locknut (key 13) to proper torque (see Table 13).

Travel Indicator Assembly Maintenance

Travel indicator assembly key numbers are referenced
in Figures 10, 14 and 18. The indicator assembly
can be removed and installed without removing the
bonnet (key 2) from the body (key 1). Travel indicator
maintenance is performed for two reasons:

a. When damaged or worn parts need replacing.
b. When travel indicator is removed and replaced

with a travel indicator plug assembly.

WARNING

!

Avoid personal injury or damage
to property from sudden release
of pressure or uncontrolled gas or

other process uid. Before starting

to disassemble, carefully release all

pressures according to the shutdown
procedure. Use gauges to monitor inlet,
loading and outlet pressures while
releasing these pressures.

1. Remove the indicator protector (key 22, Figure 14)
and indicator cover (key 21).

2. Remove the rst hex nut (key 4) and the indicator
washer (key 20).

3. Unscrew the second hex nut (key 4) on the top
of the indicator stem (key 15). Do not remove.

4. Use a wrench to remove indicator tting
(key 19).

5. Lift out travel indicator assembly. If replacing travel
indicator with travel indicator plug, skip to step 9.

6. Compress the main spring (key 12). Remove
the second hex nut (key 4). Parts will separate
easily when the hex nut is removed.

7. Slide the indicator stem (key 15) out of the

indicator tting (key 19). The main spring (key 12)

and upper spring seat (key 17) will be free.

8. If necessary, use the indicator stem (key 15) to pry
the back-up rings (key 16) and O-ring (key 18) out

of the indicator tting (key 19).

19

Type EZR

9. Check the indicator tting O-ring (key 6). Lubricate
and replace if necessary.

10. To replace travel indicator parts, lubricate
all O-rings, back-up rings and threads. To
reassemble, hold the indicator stem (key 15) and
place the parts on the stem in the following order
(see Figure 10).

• Washer (key 79 for NPS 6 / DN 150 size only)

• Main Spring (key 12), small end rst

• Upper Spring Seat (key 17), make sure to place
the large end toward the spring

• First Back-up Ring (key 16)

• O-ring (key 18)

• Second Back-up Ring (key 16)

• Indicator Fitting (key 19), the back-up rings
(key 16) and O-ring (key 18) should slide into

the indicator tting and the small end of the

upper spring seat (key 17) should slide into the

indicator tting.

• First Hex Nut (key 4)

• Indicator Washer (key 20)

• Second Hex Nut (key 4)

11. Install the indicator tting (key 19) into the bonnet
(key 2, Figure 14), tighten to the proper torque (see
Table 13).

To set the travel indicator, hold the indicator cover
(key 21) next to the indicator tting (key 19).
Screw the hex nuts (key 4) and the indicator
washer (key 20) down on the indicator stem
(key 15) until the washer is even with the lowest
marking on the indicator cover. Lightly lubricate
the indicator cover threads and install. Replace the
indicator protector (key 22).

To replace the travel indicator with the non-travel
indicator option, place the main spring (key 12) into

the bonnet. Install the indicator plug (key 19) and
tighten to proper torque (see Table 13).

161EB Series Pilots (Figure 19)

Note

This procedure covers all 161EB Series
pilots. Types 161EB and 161EBM rated
for outlet pressure settings over
200 psig / 13.8 bar require a diaphragm
limiter. Types 161EB and 161EBM pilots
rated for outlet pressure settings under
200 psig / 13.8 bar do not require a
diaphragm limiter.

Figure 11. 161EB Series Pilot Trim Removal/Installation

Trim Parts

1. As shown in Figure 11, remove the body plug
(key 3) to let the plug spring (key 6) and valve plug
(key 4) drop freely from the body.

2. Inspect the removed parts and body plug O-ring
(key 15), replace as necessary and make sure the
plug seating surfaces are free from debris.

3. Sparingly apply lubricant to the body plug O-ring
(key 15) and the threads of the body plug (key 3).
Install the body plug O-ring over the body plug.

4. Stack the plug spring (key 6) and valve plug
(key 4) on the body plug (key 3). Install the body
plug with stacked parts into the body (key 1).

Diaphragm Parts

1. Remove the closing cap (key 16), loosen the
locknut (key 12) and back out the adjusting screw
(key 11) until compression is removed from the
control spring (key 9).

2. Remove the machine screws (key 13, not shown)
and separate the spring case (key 2) from the
body (key 1). Remove the control spring seat
(key 8), the control spring (key 9). If used, remove
the diaphragm limiter (key 10) and inspect the
diaphragm limiter O-ring (key 23). Replace
if necessary.

3. Remove the diaphragm assembly (key 7) and
inspect the diaphragm.

4. On Types 161EBM and 161EBHM pilots, inspect
the stem guide seal assembly (key 19) and, if
damaged, replace the complete assembly. Inspect
the outer O-ring (key 22) and replace if necessary.

5. Install the diaphragm assembly (key 7) and push
down on it to see if the valve plug (key 4) strokes
smoothly and approximately 1/16 in. / 1.6 mm.

20

Type EZR

6. Stack the control spring (key 9), control spring seat
(key 8) and diaphragm limiter (key 10) (if used) on
the diaphragm assembly (key 7). If used, make sure
the diaphragm limiter is installed beveled side up on
Types 161EB and 161EBM pilots with 200 to
350 psig / 13.8 to 24.1 bar outlet pressure range.
Lightly apply lubricant to the control spring seat.

7. Install the spring case (key 2) on the body (key 1)
with the vent (key 18) properly oriented. Make
sure the vent is not directly over inlet or outlet
piping due to possible icing. Install the machine
screws (key 13, not shown), using a crisscross
pattern, torque them to 5 to 7 ft-lbs / 6.8 to 9.5 N•m
for stainless steel bodies and 2 to 3 ft-lbs / 2.7
to 4.1 N•m for aluminum bodies. Lubricate the
adjusting screw threads.

8. When maintenance is complete, refer to the
Startup and Adjustment section to put the regulator
back into operation and adjust the pressure setting.
Tighten the locknut (key 12), replace the closing
cap gasket (key 17) if necessary and install the
closing cap (key 16).

161AY Series Pilots (Figure 20)

Body Area

1. Use this procedure to gain access to the disk

assembly, orice and body O-ring. All pressure

must be released from the diaphragm casing and
the disk assembly must be open, before these
steps can be performed.

2. Remove the cap screws (key 2) and separate the
diaphragm casing (key 4) from the body (key 1).

3. Remove body seal O-ring (key 11) and the back­up ring (key 50). Inspect the body seal O-ring and
replace if necessary.

4. Inspect and replace the orice (key 5) if necessary.

Lubricate the threads of the replacement orice

with a good grade of light grease and install with
29 to 37 ft-lbs / 39 to 50 N•m of torque.

5. Remove the cotter pin (key 15) if it is necessary to
replace the disk assembly (key 13) or the throat
seal O-ring (key 31) of a Type 161AYM.

6. For a Type 161AYM, inspect the throat seal
O-ring (key 31) and remove the machine screw
(key 33). Replace O-ring if necessary.

7. Install the disk assembly (key 13) and secure
it with the cotter pin (key 15).

8. Place back-up ring (key 50) into the body (key 1)
then place the body seal O-ring (key 11) into the body.

BODY SEAL O-RING (KEY 11)

BACK-UP RING (KEY 50)

BODY (KEY 1)

Figure 12. Expanded View of the Body Area

Showing the O-ring and Back-up Ring Placement

9. Place the diaphragm casing (key 4) on the body
(key 1). Secure the diaphragm casing to the body
with the cap screws (key 2).

Diaphragm and Spring Case Area

Use this procedure to change the control spring and to
inspect, clean or replace parts in the spring case and
diaphragm assembly.

To Change the Control Spring:

1. Remove the closing cap (key 22) and turn the
adjusting screw (key 35) counterclockwise until
all compression is removed from the control
spring (key 6).

2. Change the control spring (key 6) to match the
desired spring range.

3. Replace the adjusting screw (key 35).

4. Install the replacement closing cap gasket (key 25)
if necessary and reinstall the closing cap (key 22).

5. If the spring was changed, be sure to change
the stamped spring range on the nameplate.

To Disassemble and Reassemble Diaphragm Parts

1. Remove the closing cap (key 22) and turn adjusting
screw (key 35) counterclockwise to remove adjusting

screw, bafe plate (key 56) and control spring (key 6).

2. Remove the spring case hex nuts (key 23, not
shown), cap screws (key 24) and spring case (key 3).

3. Remove the diaphragm (key 10) and attached
parts by tilting them so that the pusher post (key 8)
slips off the lever assembly (key 16). To separate
the diaphragm (key 10) from the attached parts,
unscrew the machine screw (key 38) from the
pusher post (key 8).

4. Inspect the pusher post (key 8) and the body seal
O-ring (key 11), replace if required.

5. Remove hex nut (key 21) to separate the
diaphragm (key 10) and attached parts.

21

Type EZR

6. To replace the lever assembly (key 16), remove
the machine screws (key 17). To replace the stem
(key 14) or access the stem seal O-ring (key 30)
also perform Body Area Maintenance procedure
steps 1 and 4 and pull the stem out of the
diaphragm casing (key 4).

7. Install the stem (key 14) into the guide insert (key 18)
and perform Body Area Maintenance procedure
steps 6 through 8 as necessary.

8. Install the lever assembly (key 16) into the stem
(key 14) and secure the lever assembly with the
machine screws (key 17).

9. Install the parts on the pusher post in the order
listed below:

• Pusher Post (key 8)

• Pusher Post Connector (key 40)

• Connector Seal O-ring (key 49)

• Diaphragm Head (key 7)

• Diaphragm (key 10), pattern side up

• Diaphragm Head (key 7)

• Hex Nut (key 21) — Tighten the hex nut 9 to
11 ft-lbs / 12 to 15 N•m to secure parts to the
pusher post connector (key 40)

• Overpressure Spring (key 39)

• Spring Holder (key 37)

• Machine Screw (key 38)

10. Insert and tighten the machine screw (key 38) with
a torque of 1 to 3 ft-lbs / 1.4 to 4.1 N•m to secure
the diaphragm parts to the pusher post (key 8).

11. Install the assembled parts in the diaphragm

casing (key 4). Make sure the lever (key 16) ts

in the pusher post (key 8) and that the holes in
the diaphragm (key 10) align with the holes in the
diaphragm casing.

12. Place the spring case (key 3) on the diaphragm
casing (key 4) so the vent assembly (key 26) is
oriented correctly and secure with the cap screws
(key 24) and hex nuts (key 23, not shown),

ngertight only.

13. Insert the control spring (key 6) into the spring

case (key 3), followed by the bafe plate (key 56)

and adjusting screw (key 35).

14. Turn the adjusting screw (key 35) clockwise until
there is enough spring (key 6) force to provide proper
slack to the diaphragm (key 10). Using a crisscross
pattern, tighten the cap screws (key 24) and hex nuts
(key 23, not shown) to 14 to 17 ft-lbs / 19 to 23 N•m
of torque. To adjust the outlet pressure to the desired
setting, refer to Startup and Adjustment section.

15. Install a replacement closing cap gasket (key 25) if
necessary and then install the closing cap (key 22).

PRX Series Maintenance

CAUTION

Always remove spring compression before
performing maintenance on this unit.
To remove spring compression, loosen
locknut (key 2, Figure 26) and back out
adjusting screw (key 1) until compression
is removed from the spring (key 7).

Lower Case Maintenance

1. Remove pressure from the pilot.

2. Remove machine screws (key 10) from lower
cover (key 21) and the separate lower cover from
the body (key 16).

3. Use a wrench to hold the stem (key 23) and
loosen the stem nut (key 20). Remove the stem
nut and washer (key 11).

4. Remove the upper diaphragm plate (key 13),
diaphragm (key 14), pad holder (key 22) and O-ring
(key 18). Inspect parts for damage or wear and
replace if necessary.

5. Remove orice (key 19) and O-ring (key 17).
Inspect the parts for damage or wear and replace
if necessary. Lightly lubricate the O-ring and place

in the body (key 16). Install the orice.

6. Set the pad holder (key 22) in the body
(key 16).

7. Lightly lubricate the rims of the diaphragm
(key 14) and place it on top of the pad holder
(key 22). Set the upper diaphragm plate (key 13)
on the diaphragm.

8. Lightly lubricate the O-ring (key 18) and place
it in the lower cover (key 21).

9. Place the washer (key 11) and stem nut
(key 20) on the stem (key 23) and tighten. If also
performing Upper Case Maintenance, skip to
step 2 of the Upper Case Maintenance section.

10. Insert machine screws (key 10) in the lower cover
(key 21) and tighten uniformly to ensure proper seal.

Upper Case Maintenance

1. Remove pressure from the pilot.

2. Loosen locknut (key 2) and back out adjusting
screw (key 1) until compression is removed from
the spring (key 7). Remove cap (key 3).

3. Lift the upper spring seat (key 6), spring
(key 7) and O-ring (key 4) out of the upper cover
(key 8). Inspect O-ring and replace if necessary.

22

Figure 13. Pushing Groove Valve Up With Retainer

4. Remove machine screws (key 10) from lower
cover (key 21) and the separate lower cover from
the body (key 16), unless removed during lower
diaphragm maintenance. Use a wrench to hold
stem (key 23) securely while removing the upper
diahragm nut (key 26).

5. Remove remaining loose components:
washer (key 11), upper diaphragm plate (key 13),
diaphragm (key 14), lower diaphragm plate
(key 15) and O-rings (keys 18 and 25). Inspect
diaphragm and O-rings for damage or wear and
replace if necessary.

6. Lightly lubricate the O-ring (key 25). Place
O-ring over the stem (key 23) and press it down
into the body (key 16).

7. Set the lower diaphragm plate (key 15) into
the body (key 16).

8. Lightly lubricate the rims of the diaphragm (key 14)
and place it in the body (key 16) on top of the
lower diaphragm plate (key 15).

9. Set the upper diaphragm plate (key 13) on top
of the diaphragm (key 14).

10. Place washer (key 11) and upper diaphragm nut
(key 26) on the stem (key 23) and tighten using a
wrench to hold the stem.

11. Set the upper spring seat (key 6).

Damper and Restrictor Maintenance

1. Remove screw (key 31, Figure 26) and plate (key 29).

2. Remove ring nuts (key 30).

3. Remove damper adjusting screw (key 27).
Remove and inspect O-ring (key 28) for damage
or wear and replace if necessary. Lightly lubricate
O-ring before placing on the adjusting screw.
Insert damper adjusting screw into the body
(key 16) and tighten. Insert ring nut (key 30) and
tighten. Back out damper adjusting screw until
it stops.

Type EZR

4. Remove restrictor adjusting screw with hole (key 32).
Remove and inspect O-ring (key 28) for damage or
wear and replace if necessary. Lightly lubricate O-ring
before placing on the adjusting screw. Insert restrictor
adjusting screw into the body (key 16) and completely
tighten. Insert ring nut (key 30) and completely
tighten. Back out restrictor adjusting screw 1/2 turn.

Note

When using a Type PRX/120 pilot with a
Type PRX/125 pilot as a monitor, use the
following settings:

• Restrictor—completely tighten and
then back out three full turns.

• Damper—back out until it stops.

5. Install plate (key 29) and screw (key 31).

Type 112 Restrictor

Perform this procedure only if O-rings are leaking.
Key numbers are referenced in Figure 21.

1. Unscrew the groove valve (key 22) and retainer
(key 23) just enough to loosen them, but do not
completely separate.

2. As shown in Figure 13, push on the retainer
(key 23) to push the groove valve (key 22) out of
the body (key 21), then complete disassembly.

3. Replace the groove valve O-rings (key 24) if
necessary, being sure to lightly apply lubricant to
the replacement O-rings before installing them in
the groove valve and retainer.

4. Install the groove valve (key 22) into the same
side of the body where the scale appears. Install
the retainer into the opposite side of the body and
tighten until both are secure.

5. When all maintenance is complete, refer to the
Startup and Adjustment section to put the regulator
back into operation.

Parts Ordering

When corresponding with your local Sales Ofce about

this equipment, reference the equipment serial number
found on a nameplate attached to the bonnet. When
ordering replacement parts, reference the key number
of each needed part as found in the following parts list.
Separate kits containing all recommended spare parts
are available.

23

Type EZR

BODY SIZE,

NPS / DN

1 / 25 WCC Steel

1-1/4 x 1 /

32 x 25

2 x 1, 2 /

50 x 25, 50

3 / 80

4 / 100

6 x 4 /

150 x 100

8 x 4 /

200 x 100

6 / 150

Table 14. Type EZR Main Valve Body Part Numbers (key 1, Figure 14)

BODY

MATERIAL

WCC Steel NPT GE11582X012 - - - - - - - - - - -

Cast iron

WCC Steel

Cast iron

WCC Steel

Cast iron

WCC Steel

WCC Steel

WCC Steel

Cast iron

WCC Steel

END CONNECTION

STYLE

NPT GE11581X012 GE32046X012

SWE GE11440X012 - - - - - - - - - - -

CL150 RF GE11583X012 14B5623X032

CL300 RF GE11607X012 14B5623X042

CL600 RF GE11608X012 14B5623X052

SCH 40 BWE GE11610X012 14B5623X122

SCH 80 BWE GE11611X012 - - - - - - - - - - -

NPT GE10583X012 ERSA04807A0

CL125 FF GE10585X012 14B5834X012

CL250 RF GE10587X012 14B5834X152

NPT GE10588X012 GG00315X012

SWE GE10682X012 GG04880X012

CL150 RF GE10676X012 14B5834X032

CL300 RF GE10678X012 14B5834X042

CL600 RF GE10679X012 14B5834X052

SCH 40 BWE GE10680X012 14B5834X072

SCH 80 BWE GE10681X012 - - - - - - - - - - -

CL125 FF GE10689X012 GG05163X012

CL250 RF GE10698X012 14B5835X112

CL150 RF GE10699X012 14B5835X032

CL300 RF GE10700X012 14B5835X042

CL600 RF GE10701X012 14B5835X052

SCH 40 BWE GE10702X012 14B5835X102

SCH 80 BWE GE10703X012

PN 25/40 GE13594X012

CL125 FF GE10707X012 GG06484X012

CL250 RF GE10822X012 14B5836X112

CL150 RF GE10835X012 14B5836X032

CL300 RF GE10839X012 14B5836X042

CL600 RF GE10842X012 14B5836X052

SCH 40 BWE GE10843X012 14B5836X092

SCH 80 BWE GE10844X012 - - - - - - - - - - -

CL150 RF GE11772X012 - - - - - - - - - - -

CL300 RF GE16359X012 39B3356X012

CL600 RF GE17626X012

SCH 80 BWE GE16561X012

CL150 RF GE17629X012

CL300 RF GE17630X012

CL600 RF GE17631X012

SCH 40 BWE GE17627X012

SCH 80 BWE GE17628X012

CL125 FF GE11444X012 ERSA03400A0

CL250 RF GE11445X012 - - - - - - - - - - -

CL150 RF GE11447X012 24B5837X032

CL300 RF GE11449X012 24B5837X042

CL600 RF GE11451X012 24B5837X052

SCH 40 BWE GE11452X012 24B5837X072

SCH 80 BWE GE11453X012 - - - - - - - - - - -

Standard

(Included Tapped Inlet)

BODY STYLE

Tapped Inlet and Tapped Outlet

- - - - - - - - - - -

- - - - - - - - - - -SCH 40 BWE GE16448X012

- - - - - - - - - - -

24

- continued -

BODY SIZE,

NPS / DN

8 x 6 /

200 x 150

12 x 6 /

300 x 150

8 / 200

Type EZR

Table 14. Type EZR Main Valve Body Part Numbers (key 1, Figure 14) (continued)

BODY MATERIAL

WCC Steel

WCC Steel

LCC Steel

WCC Steel SCH40 BWE - - - - - - - - - - - GE00715X012

END CONNECTION

STYLE

CL150 RF GE19084X012 - - - - - - - - - - -

CL300 RF GE19089X012 GG00897X012

CL600 RF GE19090X012 ERSA01423A0
SCH 40 BWE GE19091X012
SCH 80 BWE GE19092X012

CL150 RF GE19095X012

CL300 RF GE19096X012

CL600 RF GE19097X012
SCH 40 BWE GE19093X012
SCH 80 BWE GE19094X012

CL150 RF

CL300 RF FA144717X12

CL600 RF FA144716X12

Standard

(Included Tapped Inlet)

- - - - - - - - - - -

BODY STYLE

Tapped Inlet and Tapped Outlet

- - - - - - - - - - -

FA144718X12

Parts List

Type EZR Main Valve (Figures 14 to 18)

Note

On an NPS 1-1/4 x 1, 2 x 1, 6 x 4, 8 x 4,
8 x 6 or 12 x 6 / DN 32 x 25, 50 x 25,
150 x 100, 200 x 100, 200 x 150 or

300 x 150 body, the rst digit indicates

the end connection size and the second
digit indicates the trim size. Order
parts according to trim size unless
otherwise indicated.

Key Description Part Number

Parts Kits

Diaphragm Cartridge and O-rings (Included are keys 5,

6, 8, 9, 10, 11, 13, 14, 16, 18, 28, 66, 67, 70 and 121)

NPS 1 and 1-1/4 x 1 / DN 25 and 32 x 25

17E68 Nitrile (NBR) 10C0502X032
17E97 Nitrile (NBR) REZRX00CS12
17E88 Fluorocarbon (FKM) 10C0502X052

NPS 2 x 1 / DN 50 x 25

17E68 Nitrile (NBR) 10C0502X042
17E97 Nitrile (NBR) REZRX00CS92
17E88 Fluorocarbon (FKM) 10C0502X022

NPS 2 / DN 50

17E68 Nitrile (NBR) 18B5959X012
17E97 Nitrile (NBR) 18B5959X022
17E88 Fluorocarbon (FKM) 18B5959X062

NPS 3 / DN 80

17E68 Nitrile (NBR) 18B9884X022
17E97 Nitrile (NBR) 18B9884X032
17E88 Fluorocarbon (FKM) 18B9884X072

NPS 4, 6 x 4, 8 x 4 / DN 100, 150 x 100, 200 x 100

17E68 Nitrile (NBR) 18B8508X022
17E97 Nitrile (NBR) 18B8508X032
17E88 Fluorocarbon (FKM) 18B8508X072

NPS 6, 8 x 6, 12 x 6 / DN 150, 200 x 150, 300 x 150

17E97 Nitrile (NBR) REZRX00CS62
17E88 Fluorocarbon (FKM) 19B2840X042

NPS 8 / DN 200

17E97 Nitrile (NBR) REZRX00CS82

Key Description Part Number

Diaphragm and O-rings (Included are

keys 6, 8, 9, 10, 13, 14, 18, 28 and 70)

NPS 1 / DN 25

17E68 Nitrile (NBR) 19B2412X022
17E97 Nitrile (NBR) REZRX000S12
17E88 Fluorocarbon (FKM) 19B2412X072

NPS 2 x 1 / DN 50 x 25

17E68 Nitrile (NBR) 19B2412X062
17E97 Nitrile (NBR) REZRX000S92
17E88 Fluorocarbon (FKM) 19B2412X052

NPS 2 / DN 50

17E68 Nitrile (NBR) 18B5952X012
17E97 Nitrile (NBR) 18B5952X022
17E88 Fluorocarbon (FKM) 18B5952X062

NPS 3 / DN 80

17E68 Nitrile (NBR) 18B9885X022
17E97 Nitrile (NBR) 18B9885X032
17E88 Fluorocarbon (FKM) 18B9885X072

NPS 4, 6 x 4 and 8 x 4 / DN 100, 150 x 100

and 200 x 100

17E68 Nitrile (NBR) 18B8507X022
17E97 Nitrile (NBR) 18B8507X032
17E88 Fluorocarbon (FKM) 18B8507X072

NPS 6, 8 x 6 and 12 x 6 / DN 150, 200 x 150

and 300 x 150

17E97 Nitrile (NBR) REZRX000S62
17E88 Fluorocarbon (FKM) 19B2837X042

NPS 8 / DN 200

17E97 Nitrile (NBR) REZRX000S82

Quick Change Travel Indicator Kit (Included are

keys 4, 6, 12, 15, 16, 17, 18, 19, 20, 21 and 22)

NPS 1 and 1-1/4 x 1 / DN 25 and 32 x 25

Light Blue Spring, Nitrile (NBR) O-rings 19B0562X022
Black Spring, Nitrile (NBR) O-rings 19B0562X012
Black Spring, Fluorocarbon (FKM) O-rings 19B0562X032
Black with White Stripe Spring,

Nitrile (NBR) O-rings 19B0562X072

Black with White Stripe Spring,

Fluorocarbon (FKM) O-rings 19B0562X082

NPS 2 x 1 / DN 50 x 25

Light Blue Spring, Nitrile (NBR) O-rings 19B0562X022

Black with White Stripe Spring,

Nitrile (NBR) O-rings 19B0562X 072

Black with White Stripe Spring,

Fluorocarbon (FKM) O-rings 19B0562X082

Red Stripe Spring, Nitrile (NBR) O-rings 19B0562X092

*Recommended Spare Part

25

Type EZR

Key Description Part Number

Quick Change Travel Indicator Kit (Included are

keys 4, 6, 12, 15, 16, 17, 18, 19, 20, 21 and 22) (continued)

NPS 2 / DN 50

Yellow Spring, Nitrile (NBR) O-rings 29B0243X112
Yellow Spring, Fluorocarbon (FKM) O-rings 29B0243X122
Green Spring, Nitrile (NBR) O-rings 29B0243X082
Green Spring, Fluorocarbon (FKM) O-rings 29B0243X102
Red Spring, Nitrile (NBR) O-rings 29B0243X072
Red Spring, Fluorocarbon (FKM) O-rings 29B0243X092

NPS 3 / DN 80

Yellow Spring, Nitrile (NBR) O-rings 29B0243X062
Yellow Spring, Fluorocarbon (FKM) O-rings 29B0243X142
Light Blue Spring, Nitrile (NBR) O-rings 29B0243X022
Light Blue Spring, Fluorocarbon (FKM) O-rings 29B0243X042
Black Spring, Nitrile (NBR) O-rings 29B0243X012
Black Spring, Fluorocarbon (FKM) O-rings 29B0243X032

NPS 4, 6 x 4, 8 x 4 / DN 100, 150 x 100, 200 x 100

Yellow Spring, Nitrile (NBR) O-rings 29B0243X062
Yellow Spring, Fluorocarbon (FKM) O-rings 29B0243X142
Green Spring, Nitrile (NBR) O-rings 29B0243X172
Green Spring, Fluorocarbon (FKM) O-rings 29B0243X182
Red Spring, Nitrile (NBR) O-rings 29B0243X192
Red Spring, Fluorocarbon (FKM) O-rings 29B0243X202

NPS 6, 8 x 6, 12 x 6 / DN 150, 200 x 150, 300 x 150

Yellow Spring, Nitrile (NBR) O-rings 29B2839X052
Yellow Spring, Fluorocarbon (FKM) O-rings 29B2839X062
Green Spring, Nitrile (NBR) O-rings 29B2839X022
Green Spring, Fluorocarbon (FKM) O-rings 29B2839X042
Red Spring, Nitrile (NBR) O-rings 29B2839X012
Red Spring, Fluorocarbon (FKM) O-rings 29B2839X032

1 Valve Body See Table 14
2 Bonnet Assembly, Steel

NPS 1 and 1-1/4 x 1 / DN 25 and 32 x 25 bodies 39B2403X022
NPS 2 x 1 and 2 / DN 50 x 25 and 50 bodies 38B2122X022
NPS 3 / DN 80 body 38B5963X022
NPS 4, 6 x 4 and 8 x 4 / DN 100, 150 x 100

and 200 x 100 bodies 38B2133X022

NPS 6, 8 x 6 and 12 x 6 / DN 150, 200 x 150

and 300 x 150 bodies 49B0355X022

NPS 8 / DN 200 body GE18697X022

3 Cap Screw, Zinc-Plated Steel

NPS 1 and 1-1/4 x 1 / DN 25 and 32 x 25

bodies (4 required) 1R281124052
NPS 2 x 1 or 2 / DN 50 x 25 or 50 body (8 required) 1A453324052
NPS 3 / DN 80 body (8 required) 1A454124052
NPS 4, 6 x 4 and 8 x 4 / DN 100, 150 x 100

and 200 x 100 bodies (8 required) 1A440224052
NPS 6, 8 x 6 and 12 x 6 / DN 150, 200 x 150

and 300 x 150 bodies (12 required) 1U513124052

4 Hex Nut (2 required)

NPS 1, 1-1/4 x 1, 2 x 1 and 2 / DN 25, 32 x 25

50 x 25 and 50 body, Zinc-plated carbon steel 1H322228982
NPS 3, 4, 6 x 4, 8 x 4, 6, 8 x 6 and 12 x 6 /

DN 80, 100, 150 x 100, 200 x 100, 150,

200 x 150 and 300 x 150 body, Stainless steel 1L286338992

NPS 8 / DN 200 body, Zinc-plated carbon steel 1A573528982

5 Top Plug, Stainless steel

NPS 1, 1-1/4 x 1 and 2 x 1 / DN 25, 32 x 25

and 50 x 25 bodies 29B2404X012
NPS 2 / DN 50 body 28B2130X012
NPS 3 / DN 80 body 28B8511X012
NPS 4, 6 x 4 and 8 x 4 / DN 100, 150 x 100 and

200 x 100 bodies 28B5964X012
NPS 6, 8 x 6 and 12 x 6 / DN 150, 200 x 150 and

300 x 150 bodies 39B0370X012
NPS 8 / DN 200 body 39B5071X012

6* O-ring

NPS 1, 1-1/4 x 1, 2 x 1 and 2 / DN 25, 32 x 25,

50 x 25 and 50 bodies

Nitrile (NBR) 18B3438X012
Fluorocarbon (FKM) 1N430306382

*Recommended Spare Part

26

Key Description Part Number

6* O-ring (continued)

NPS 3 / DN 80 body

Nitrile (NBR) 10A8931X012
Fluorocarbon (FKM) 10A8931X052

NPS 4, 6 x 4 and 8 x 4 / DN 100, 150 x 100

and 200 x 100 bodies

Nitrile (NBR) 10A8931X012
Fluorocarbon (FKM) 10A8931X052

NPS 6, 8 x 6, 12 x 6 and 8 / DN 150, 200 x 150,

300 x 150 and 200 bodies

Nitrile (NBR) 10A3800X012
Fluorocarbon (FKM) 1R727606382

7 Cage, Stainless steel

NPS 1, 1-1/4 x 1 and 2 x 1 / DN 25, 32 x 25

and 50 x 25 bodies 39B2413X012
NPS 2 / DN 50 body 37B9748X012
NPS 3 / DN 80 body 48B5961X012
NPS 4 / DN 100 body 48B2135X012
NPS 6 x 4 / DN 150 x 100 body 29B1881X012
NPS 8 x 4 / DN 200 x 100 body 29B1883X012
NPS 6, 8 x 6 and 12 x 6 / DN 150, 200 x 150

and 300 x 150 bodies 49B0353X012
NPS 8 / DN 200 body 59B5955X012

8* Cage O-ring (not required for NPS 2 x 1 or 8 x 6 /

DN 50 x 25 or 200 x 150) bodies

NPS 1 / DN 25 body

Nitrile (NBR) 14A5713X012
Fluorocarbon (FKM) 13A2351X012

NPS 2 / DN 50 body

Nitrile (NBR) 10B4428X012
Fluorocarbon (FKM) 10B4428X022

NPS 3 / DN 80 body

Nitrile (NBR) 10B4366X012
Fluorocarbon (FKM) 10B4366X022

NPS 4, 6 x 4 and 8 x 4 / DN 100, 150 x 100

and 200 x 100 bodies

Nitrile (NBR) 10B4373X012
Fluorocarbon (FKM) 10B4373X022

NPS 6, 8 x 6 and 12 x 6 / DN 150, 200 x 150

and 300 x 150 bodies

Nitrile (NBR) 1H862306992
Fluorocarbon (FKM) 1H8623X0022

NPS 8 / DN 200 body

Nitrile (NBR) 1V9229X0042
Fluorocarbon (FKM) 1V9229X0022

9* Diaphragm

NPS 1, 1-1/4 x 1 and 2 x 1 / DN 25, 32 x 25

and 50 x 25 bodies

17E97 Nitrile (NBR), high pressure GE11960X012
17E88 Fluorocarbon (FKM) 39B2397X022
17E68 Nitrile (NBR), low pressure 30C1009X012

NPS 2 / DN 50 body

17E68 Nitrile (NBR), low temperature 29B1909X012

17E97 Nitrile (NBR), high pressure 28B2123X052

17E88 Fluorocarbon (FKM) 29B2715X012
NPS 3 / DN 80 body

17E68 Nitrile (NBR), low temperature 38B9886X012

17E97 Nitrile (NBR), high pressure 39B2726X012

17E88 Fluorocarbon (FKM) 38B8512X022
NPS 4, 6 x 4 and 8 x 4 / DN 100, 150 x 100

and 200 x 100 bodies

17E68 Nitrile (NBR), low temperature 38B8509X012
17E97 Nitrile (NBR), high pressure 39B3996X012
17E88 Fluorocarbon (FKM) 39B1154X012

NPS 6, 8 x 6 and 12 x 6 / DN 150, 200 x 150

and 300 x 150 bodies

17E97 Nitrile (NBR) 49B0357X012
17E88 Fluorocarbon (FKM) 40C1035X012

NPS 8 / DN 200 body

17E97 Nitrile (NBR) 40C1888X012

Type EZR

Key Description Part Number

10* O-ring

NPS 1, 1-1/4 x 1, 2 x 1 and 2 / DN 25, 32 x 25,

50 x 25 and 50 bodies

Nitrile (NBR) 1E216306992
Fluorocarbon (FKM) 1L949306382

NPS 3, 4, 6 x 4 and 8 x 4 / DN 80, 100,

150 x 100 and 200 x 100 bodies

Nitrile (NBR) 1J4888X0052
Fluorocarbon (FKM) 1J4888X0032

NPS 6, 8 x 6 and 12 x 6 / DN 150, 200 x 150

and 300 x 150 bodies

Nitrile (NBR) 11A8741X052
Fluorocarbon (FKM) 11A8741X012

NPS 8 / DN 200 body

Nitrile (NBR) 1F4636X0032
Fluorocarbon (FKM) 1N571406382

11 Bottom Plug, Stainless steel

NPS 1, 1-1/4 x 1 and 2 x 1 / DN 25, 32 x 25

and 50 x 25 bodies 19B2407X012
NPS 2 / DN 50 body 18B2127X012
NPS 3 / DN 80 body 18B8513X012
NPS 4, 6 x 4 and 8 x 4 / DN 100, 150 x 100

and 200 x 100 bodies 18B5966X012
NPS 6, 8 x 6 and 12 x 6 / DN 150, 200 x 150

and 300 x 150 bodies 29B0763X012
NPS 8 / DN 200 body 29B5958X012

12 Main Spring

NPS 1, 1-1/4 x 1 and 2 x 1 / DN 25, 32 x 25

and 50 x 25 bodies

White 19B2399X012
Black GE12727X012
Red Stripe (NPS 2 x 1 / DN 50 x 25 body only) GE12501X012
Light Blue 19B2400X012
Black with White Stripe 19B2401X012

NPS 2 / DN 50 body

Yellow 19B0951X012

Green 18B2126X012

Red for use with travel indicator 18B5955X012

Purple for use with non-travel indicator GE05504X012
NPS 3 / DN 80 body

Yellow T14184T0012

Light Blue 19B0781X012

Black 19B0782X012
NPS 4, 6 x 4 and 8 x 4 / DN 100, 150 x 100

and 200 x 100 bodies

Yellow T14184T0012
Green 18B8501X012
Red 18B8502X012

NPS 6, 8 x 6 and 12 x 6 / DN 150, 200 x 150

and 300 x 150 bodies

Yellow 19B0364X012
Green 19B0366X012
Red 19B0365X012

NPS 8 / DN 200 body

Yellow GE09393X012

Green GE09396X012

Red GE09397X012

13* Flanged Locknut, Steel

NPS 2 / DN 50 body 18B2139X012
NPS 3, 4, 6 x 4 and 8 x 4 / DN 80, 100,

150 x 100 and 200 x 100 bodies 15A7591X012
NPS 6, 8 x 6, 12 x 6 / DN 150,

200 x 150 and 300 x 150 bodies 19B0361X012
NPS 8 / DN 200 body 10C1267X012

14* Top Plug O-ring

NPS 1, 1-1/4 x 1, 2 x 1 and 2 / DN 25, 32 x 25,

50 x 25 and 50 bodies

Nitrile (NBR) 13A1584X052
Fluorocarbon (FKM) 13A1584X022

Key Description Part Number

14* Top Plug O-ring (continued)

NPS 3, 4, 6 x 4 and 8 x 4 / DN 80, 100,

150 x 100 and 200 x 100 bodies

Nitrile (NBR) 10A3803X062
Fluorocarbon (FKM) 10A3803X032

NPS 6, 8 x 6, 12 x 6 and 8 / DN 150, 200 x 150,

300 x 150 and 200 bodies

Nitrile (NBR) T12050X0012
Fluorocarbon (FKM) T12050X0022

15 Stem, Stainless steel

NPS 1, 1-1/4 x 1 and 2 x 1 /

DN 25, 32 x 25 and 50 x 25 bodies T14185T0012
NPS 2 / DN 50 body with travel indicator T14185T0012
NPS 3, 4, 6 x 4 and 8 x 4 / DN 80, 100,

150 x 100 and 200 x 100 bodies T21074T0012
NPS 6, 8 x 6 and 12 x 6 / DN 150

200 x 150 and 300 x 150 bodies 29B0366X012
NPS 8 / DN 200 body 29B5076X012

16 Back-up Ring (2 required)

NPS 1, 1-1/4 x 1, 2 x 1 and 2 /

DN 25, 32 x 25, 50 x 25 and 50 bodies 1N659106242
NPS 3, 4, 6 x 4, 8 x 4, 6, 8 x 6 and 12 x 6 /

DN 80, 100, 150 x 100, 200 x 100, 150,

200 x 150 and 300 x 150 bodies 1J418806992

NPS 8 / DN 200 body 1K786806992

17 Upper Spring Seat

NPS 1, 1-1/4 x 1 and 2 x 1 /

DN 25, 32 x 25 and 50 x 25 bodies 18B2129X012
NPS 2 / DN 50 body with travel Indicator 18B2129X012
NPS 3, 4, 6 x 4 and 8 x 4 /

DN 80, 100, 150 x 100 and 200 x 100 bodies 18B5968X012
NPS 6, 8 x 6 and 12 x 6 /

DN 150, 200 x 150 and 300 x 150 bodies 29B0764X012
NPS 8 / DN 200 body 20C1357X012

18* O-ring

NPS 1, 1-1/4 x 1, 2 x 1 and 2 / DN 25, 32 x 25,

50 x 25 and 50 bodies

Nitrile (NBR) 1H2926X0032
Fluorocarbon (FKM) 1H2926X0022

NPS 3, 4, 6 x 4, 8 x 4, 6, 8 x 6 and 12 x 6 / DN 80,

100, 150 x 100, 200 x 100, 150, 200 x 150

and 300 x 150 bodies

Nitrile (NBR) 1D191706992
Fluorocarbon (FKM) 1N423906382

NPS 8 / DN 200 body

Nitrile (NBR) 1E472706992

Fluorocarbon (FKM) 1N430406382

19 Indicator Fitting, Stainless steel

NPS 1, 1-1/4 x 1, 2 x 1 and 2 / DN 25, 32 x 25,

50 x 25 and 50 bodies 28B2128X012

NPS 3, 4, 6 x 4 and 8 x 4 / DN 80, 100,

150 x 100 and 200 x 100 bodies 28B5969X012

NPS 6, 8 x 6, 12 x 6 / DN 150, 200 x 150
and 300 x 150 bodies 39B0358X012
NPS 8 / DN 200 body 30C1356X012

19 Indicator Plug, Stainless steel

NPS 1, 1-1/4 x 1 and 2 x 1 / DN 25, 32 x 25

and 50 x 25 bodies 19B2409X012

NPS 2 / DN 50 body GE17585X012
NPS 3, 4, 6 x 4 and 8 x 4 / DN 80, 100,

150 x 100 and 200 x 100 bodies 28B5970X012

NPS 6, 8, 8 x 6 and 12 x 6 / DN 150, 200,

200 x 150 and 300 x 150 bodies 39B0767X012

20 Indicator Washer

NPS 1, 1-1/4 x 1, 2 x 1 and 2 / DN 25, 32 x 25,

50 x 25 and 50 bodies 18B2138X012

NPS 3, 4, 6 x 4, 8 x 4, 6, 8 x 6 and 12 x 6 / DN 80,

100, 150 x 100, 200 x 100, 150, 200 x 150

and 300 x 150 bodies 18B8503X012

NPS 8 / DN 200 body 20C2461X012

*Recommended Spare Part

27

Type EZR

Key Description Part Number

21 Indicator Cover, Plastic

NPS 1, 1-1/4 x 1, 2 x 1 and 2 / DN 25, 32 x 25,

50 x 25 and 50 bodies T14188T0012

NPS 3, 4, 6 x 4 and 8 x 4 / DN 80, 100,

150 x 100 and 200 x 100 bodies 19B2270X012

NPS 6, 8, 8 x 6 and 12 x 6 / DN 150, 200,

200 x 150 and 300 x 150 bodies 19B4691X012

22 Indicator Protector, Plastic

NPS 1, 1-1/4 x 1, 2 x 1 and 2 / DN 25, 32 x 25,

50 x 25 and 50 bodies 24B1301X012

NPS 3, 4, 6 x 4, 8 x 4, 6, 8, 8 x 6 and 12 x 6 / DN 80,

100, 150 x 100, 200 x 100, 150, 200, 200 x 150

and 300 x 150 bodies 29B2269X012

23 Inlet Strainer, Stainless steel

NPS 1 and 1-1/4 x 1 / DN 25 and 32 x 25 bodies 20B8004X012
NPS 2 x 1 and 2 / DN 50 x 25 and 50 bodies 10B4409X012
NPS 3 / DN 80 body 20B4367X012
NPS 4, 6 x 4 and 8 x 4 / DN 100, 150 x 100

and 200 x 100 bodies 20B4374X012

NPS 6, 8 x 6 and 12 x 6 / DN 150, 200 x 150

and 300 x 150 bodies 20B7853X012

NPS 8 / DN 200 body 29B5966X012

23 Strainer Replacement Shim, Stainless steel

NPS 1 and 1-1/4 x 1 / DN 25 and 32 x 25 bodies 13B8061X012
NPS 2 x 1 and 2 / DN 50 x 25 and 50 bodies 13B8062X012
NPS 3 / DN 80 body 13B8063X012
NPS 4, 6 x 4 and 8 x 4 / DN 100, 150 x 100

and 200 x 100 bodies 13B8064X012

NPS 6, 8 x 6 and 12 x 6 / DN 150, 200 x 150

and 300 x 150 bodies 13B8065X012

NPS 8 / DN 200 body 39B5967X012
24 Nameplate - - - - - - - - - - ­25 Flow Arrow, Stainless steel - - - - - - - - - - ­26 Drive Screw, Stainless steel

For NPS 1 and 1-1/4 x 1 / DN 25

and 32 x 25 (4 required)

For NPS 2 x 1, 2, 3, 4, 6, 6 x 4 and 8 x 4, /

DN 50 x 25, 50, 80, 100, 150, 150 x 100

and 200 x 100(5 required)

For NPS 8 / DN 200 (6 required) 1A368228982
28* O-ring

NPS 1 and 1-1/4 x 1 / DN 25 and 32 x 25 bodies

Nitrile (NBR) 19B2838X012
Fluorocarbon (FKM) 19B2838X022

NPS 2 x 1 and 2 / DN 50 x 25 and 50 bodies

Nitrile (NBR) 18B2124X012
Fluorocarbon (FKM) 18B2124X022

NPS 3 / DN 80 body

Nitrile (NBR) 18B8514X012
Fluorocarbon (FKM) 18B8514X022

NPS 4, 6 x 4 and 8 x 4 / DN 100, 150 x 100

and 200 x 100 bodies

Nitrile (NBR) 18B2140X012
Fluorocarbon (FKM) 18B2140X022

NPS 6, 8 x 6 and 12 x 6 / DN 150, 200 x 150

and 300 x 150 bodies

Nitrile (NBR) 19B0359X012
Fluorocarbon (FKM) 10A3591X012

NPS 8 / DN 200 body

Nitrile (NBR) 1P5585X0022
Fluorocarbon (FKM) 1P5585X0032

47 Hex Nut, SA194-2H

(NPS 8 / DN 200 body only) (8 required) 1A4452X0612
63 Pilot Supply Pipe Plug, Steel (2 required) 1A767524662
64 Bonnet Pipe Plug, Steel

For NPS 1, 1-1/4 x 1, 2 x 1, 2, 3, 4, 6, 8 x 6,

12 x 6, 6 X 4 and 8 X 4 / DN 25, 32 x 25,

50 x 25, 50, 80, 100, 150, 200 x 150,

300 x 150, 150 x 100 and 200 x 100 1A767524662

For NPS 8 / DN 200 1A369224492

Key Description Part Number

66 O-ring (NPS 8 x 6 / DN 200 x 150 body only)

Nitrile (NBR) 18A2556X022
Fluorocarbon (FKM) 18A2556X032

67 O-ring

NPS 2 x 1 / DN 50 x 25 body

Nitrile (NBR) 10B4428X012
Fluorocarbon (FKM) 10B4428X022

NPS 8 x 6 / DN 200 x 150 body

Nitrile (NBR) 1V335006562
Fluorocarbon (FKM) 1V3350X0012

70* O-ring

NPS 1, 1-1/4 x 1, 2 x 1 and 2 / DN 25, 32 x 25,

50 x 25 and 50 bodies

Nitrile (NBR) 13A1584X052
Fluorocarbon (FKM) 13A1584X022

NPS 3, 4, 6 x 4 and 8 x 4 / DN 80, 100,

150 x 100 and 200 x 100 bodies

Nitrile (NBR) 10A3803X062
Fluorocarbon (FKM) 10A3803X032

NPS 6, 8 x 6, 2 x 6 and 8 / DN 150,

200 x 150, 300 x 150 and 200 body

Nitrile (NBR)T12050X0012
Fluorocarbon (FKM) T12050X0022

71 Restrictor Plate, Stainless steel

NPS 1, 1-1/4 x 1 and 2 x 1 / DN 25, 32 x 25

and 50 x 25 bodies

For 60% Capacity Trim 19B2835X012
For 30% Capacity Trim 19B2836X012

NPS 2 / DN 50 body

For 60% Capacity Trim 18B2144X012
For 30% Capacity Trim 18B2145X012

NPS 3 / DN 80 body

For 60% Capacity Trim 28B8516X012
For 30% Capacity Trim 28B8517X012

NPS 4, 6 x 4 and 8 x 4 / DN 100, 150 x 100

and 200 x 100 bodies

For 60% Capacity Trim 28B8504X012
For 30% Capacity Trim 28B8505X012

NPS 6 / DN 150 body

For 100% Capacity Trim 49B0367X012
For 60% Capacity Trim 49B0368X012
For 30% Capacity Trim 49B0369X012

NPS 8 x 6 / DN 200 x 150 body

For 100% Capacity Trim 49B0768X012
For 60% Capacity Trim 49B0776X012
For 30% Capacity Trim 49B0775X012

NPS 12 x 6 / DN 300 x 150 body

For 100% Capacity Trim 49B0769X012
For 60% Capacity Trim 49B2396X012
For 30% Capacity Trim 49B0777X012

72 E-Ring, for Restricted Trim, Steel

NPS 1, 1-1/4 x 1 and 2 x 1 / DN 25, 32 x 25

and 50 x 25 bodies 19B2411X012
NPS 2 / DN 50 body 16A7882X012
NPS 3 / DN 80 body 18B8518X012
NPS 4, 6 x 4 and 8 x 4 / DN 100, 150 x 100

and 200 x 100 bodies 18B8506X012

79 Washer (NPS 6, 8 x 6 and 12 x 6 / DN 150, 200 x 150

and 300 x 150 bodies), Stainless steel 19B0362X012

121 O-ring

NPS 2 x 1 / DN 50 x 25 body

Nitrile (NBR) T12587T0012

Fluorocarbon (FKM) T12587T0022
NPS 6, 8 x 6 and 12 x 6 / DN 150, 200 x 150

and 300 x 150 bodies

Nitrile (NBR) 1D269206992
Fluorocarbon (FKM) 1D2692X0022

126 Cap Screw, Steel (4 required)

NPS 6 / DN 150 body 1L7325X0042
NPS 8 x 6 / DN 200 x 150 body 1V6816X0012
NPS 12 x 6 / DN 300 x 150 body 19B3650X022

*Recommended Spare Part

28

129 Socket Head Screw, Stainless steel

For NPS 1, 1-1/4 x 1 and 2 x 1 / DN 25, 32 x 25

and 50 x 25 only 1D6170X0012

130 Lock Washer, Stainless steel

For NPS 1, 1-1/4 x 1 and 2 x 1 / DN 25, 32 x 25

and 50 x 25 only 1A329128982
131 Upper Adaptor (NPS 2 x 1 / DN 50 x 25 body only) 29B5963X012
132 Lower Adaptor (NPS 2 x 1 / DN 50 x 25 body only) 19B5964X012
133* O-ring

NPS 2 x 1 / DN 50 x 25 body only

Nitrile (NBR) 1F262906992

Fluorocarbon (FKM) 1F2629X0012

NPS 8 / DN 200 body only 1N3330X0032

136 Stud, Steel

(NPS 8 / DN 200 body only) (8 required) 11A5189X282

137 Lower Spring Seat, Stainless steel

NPS 8 / DN 200 body only GE09140X012

140 Bushing, Carbon Steel

NPS 6, 8 x 6 and 12 x 6, 8 / DN 150,

200 x 150 and 300 x 150, 200 bodies 1C379026232
143 Lifting Flange

NPS 8 / DN 200 body only 30C1724X012

144 Yoke Locknut

NPS 8 / DN 200 body only 1E832723062

161EB Series Pilots (Figure 19)

Key Description Part Number

Type 161EB Parts Kit, Nitrile (NBR)

(included are keys 4, 6, 7 and 15)

5 to 200 psig / 0.34 to 13.8 bar R161X000012

200 to 350 psig / 13.8 to 24.1 bar R161X000022

Type 161EBM Parts Kit, Nitrile (NBR)

(included are keys 4, 6, 7, 15, 17, 19 and 22)

5 to 200 psig / 0.34 to 13.8 bar R161MX00012

200 to 350 psig / 13.8 to 24.1 bar R161MX00022

Type 161EBH Parts Kit, Nitrile (NBR)

(included are keys 4, 6, 7 ,15 and 23) R161HX00012

Type 161EBHM Parts Kit, Nitrile (NBR)

(included are keys 4, 6, 7 ,15, 19, 22 and 23) R161HMX0012

1 Body Assembly, CF8M Stainless steel

Types 161EB and 161EBH 1B7971X0252

Types 161EBM and 161EBHM 30B8715X012
2 Spring Case, Stainless steel 27B9722X012
3 Body Plug, Stainless steel 1B7975X0052
4* Valve Plug,

Nitrile (NBR) with stainless steel stem 20B9389X052

Fluorocarbon (FKM) with stainless steel stem 20B9389X062
6 Plug Spring, Stainless steel 1E701337022
7* Diaphragm Assembly, Diaphragm

with Stainless steel diaphragm plate See Table 15
8 Control Spring Seat, Plated steel See Table 15
9 Control Spring, Zinc-plated steel See Table 15
10 Diaphragm Limiter, Stainless steel See Table 15
11 Adjusting Screw, Plated steel See Table 15
12 Locknut, Zinc-plated steel 1D667728982
13 Machine Screw (6 required)

Types 161EB and 161EBM, Stainless steel 1V4360T0012

Types 161EBH and 161EBHM, Plated steel T12980T0012
14 Pipe Plug

Types 161EB and 161EBH 1A767535072
15 Body Plug O-ring, Nitrile (NBR) 1F113906992
16 Closing Cap

Nylon (PA) 24B1301X012

Metal, for pressure loading

Types 161EB and 161EBM only 17B1406X012

17* Closing Cap Gasket,

Pressure loading for metal closing cap

Types 161EB and 161EBM only 1C659804022

Type EZR

Key Description Part NumberKey Description Part Number

18 Type Y602-12 Vent Assembly, Plastic 27A5516X012
19* Stem Guide Seal Assembly

Types 161EBM and 161EBHM

Stainless steel seal and

seal retainer with Nitrile (NBR) O-ring 10B8711X012
22 O-ring (Types 161EBM and 161EBHM) 10A0904X012
23 O-ring (Types 161EBH and 161EBHM) 10A7777X012
38 Lower Spring Seat 18B1248X012

Type 161AY or 161AYM Pilot (Figure 20)

Parts Kit (included are keys 10, 11, 12, 13, 15, 25,

30, 31, 33, 45, 48 and 49) RY690AX0012

1 Body, Cast iron 1E987119012
2 Cap Screw (2 required) 1C856228992
3 Spring Case Assembly, Ductile iron 13B0109X042
4 Lower Casing, Ductile iron

Type 161AY 17B5352X012
Type 161AYM 47B3063X012

5 Orifice, 303 Stainless steel

3/32 in. / 2.4 mm 0R044135032
1/4 in. / 6.4 mm 0B042035032
1/8 in. / 3.2 mm 1A936735032

6 Control Spring

6 to 15 in. w.c. / 15 to 37 mbar 1B653927022

0.5 to 1.2 psig / 34 to 83 mbar 1B537027052

1.2 to 2.5 psig / 83 mbar to 0.17 bar 1B537127022

2.5 to 4.5 psig / 0.17 to 0.31 bar 1B537227022

4.5 to 7 psig / 0.31 to 0.48 bar 1B537327052
7 Diaphragm Head (2 required) 17B9723X032
8 Pusher Post 27B5354X012
10 Diaphragm

Nitrile (NBR) 37B9720X012
Fluorocarbon (FKM) 23B0101X052

11 Body Seal

Nitrile (NBR) 1H993806992
Fluorocarbon (FKM) 1H9938X0012

12 Insert Seal

Nitrile (NBR) 1B885506992
Fluorocarbon (FKM) 1B8855X0012

13 Disk Assembly

Nitrile (NBR) 1C4248X0202

Fluorocarbon (FKM) 1C4248X0052
14 Stem 17B3423X012
15 Cotter Pin 1A866537022
16 Lever Assembly 1B5375000B2
17 Machine Screws (2 required) 19A7151X022
18 Guide Insert 27B4028X022
21 Hex Nut 1A354024122
22 Closing Cap

Plastic (standard) T13524T0062

Steel 1E422724092
23 Hex Nut (8 required) 1A352724122
24 Cap Screw (8 required) 1A352524052
25 Closing Cap Gasket 1P753306992
26 Vent Assembly

Spring Case Down (Type Y602-1) Type Y602X1-A1

Spring Case Up (Type Y602-11) Type Y602X1-A11

Spring Case Sideways (Type Y602-12) Type Y602X1-A12
27 Pipe Plug, Type 161AY only 1A369224492
30 Stem Seal O-ring, Type 161AYM only

Nitrile (NBR) 1H2926G0012

Fluorocarbon (FKM) 1H2926X0022
31 Throat Seal, Type 161AYM only

Nitrile (NBR) 1D682506992

Fluorocarbon (FKM) 1D6825X0012
33 Machine Screw, Type 161AYM only 18A0703X022
35 Adjusting Screw 1B537944012
37 Spring Holder 1R982025072
38 Machine Screw 10B6189X022

*Recommended Spare Part

29

Type EZR

Key Description Part Number Key Description Part Number

39 Overpressure Spring 1B541327022
40 Pusher Post Connector 27B7982X012
46 Nameplate - - - - - - - - - - ­47 Drive Screw (2 required) 1A368228982
48 Post Seal

Nitrile (NBR) 1D687506992
Fluorocarbon (FKM) 1N430406382

49 Connector Seal

Nitrile (NBR) 13A1584X012

Fluorocarbon (FKM) 13A1584X022
50 Back-up Ring 18B3446X012
55 Restriction 1D483514012
56 Baffle Plate 11B4292X012

161EB Series Mounting Parts

Standard Conguration

Key Description Part Number

29 Pipe Nipple, Plated steel

NPS 1 and 1-1/4 / DN 25 and 32 body 1N584226232

NPS 2 and 3 / DN 50 and 80 body 1U264426232

NPS 4 / DN 100 body 1U5728X0012

NPS 6, 6 x 4 and 8 x 4 /

DN 150, 150 x 100 and 200 x 100 bodies 1C210026232

NPS 8 x 6 and 12 x 6 /

DN 200 x 150 and 300 x 150 bodies 1C215726012

NPS 8 / DN 200 body 1C215726012
38 Pipe Nipple, Plated steel 1D239726232

Type 112 Restrictor (Figure 21)

Key Description Part Number

14 Pipe Plug, Stainless steel 1A767535072
21 Body, Stainless steel 20B4429X012
22 Groove Valve, Stainless steel 20B4403X012
23 Retainer, Stainless steel 10B4402X012
24* Groove Valve O-ring (2 required),

Fluorocarbon (FKM) 1C8538X0052

161AY Series Mounting Parts (Figure 22)

For Regulator Pilot

Key Description Part Number

4 Nut, SA194 (2 required) 1C3306X0832
29 Pipe Nipple, Plated Steel

NPS 1 and 1-1/4 x 1 /

DN 25 and 32 x 25 bodies 1N584226232

NPS 2 x 1, 2 and 3 /

DN 50 x 25, 50 and 80 bodies 1N624026232

NPS 4, 6 x 4 and 8 x 4 / DN 100, 150 x 100

and 200 x 100 bodies 1U5728X0012

NPS 6, 8 x 6 and 12 x 6 /

DN 150, 200 x 150 and 300 x 150 bodies 1C210026232

NPS 8 / DN 200 body 1C215726012
45 Bushing, Plated Steel 1A3424X00A2
46 Washer, (2 required) 1D716228982
47 Nut (2 required) 1E944024112

*Recommended Spare Part

48 U-Bolt 11B3469X012
49 Mounting Bracket

NPS 1 and 1-1/4 x 1 /

DN 25 and 32 x 25 bodies 37B4475X012
NPS 2 x 1 and 2 / DN 50 x 25 and 50 bodies 31B3466X012
NPS 3 / DN 80 body 31B3467X012
NPS 4 / DN 100 body - - - - - - - - - - ­NPS 6, 8 x 6 and 12 x 6 /

DN 150, 200 x 150 and 300 x 150 bodies - - - - - - - - - - ­NPS 8 / DN 200 body - - - - - - - - - - -

73 Stud, Zinc-plated steel (2 required) - - - - - - - - - - -

For Working Monitor Set

Key Description Part Number

4 Nut, SA194 (2 required) 1C3306X0832
29 Pipe Nipple, Plated Steel

NPS 1 and 1-1/4 x 1 /

DN 25 and 32 x 25 bodies 1N584226232
NPS 2 x 1, 2 and 3 /

DN 50 x 25, 50 and 80 bodies 1N624026232
NPS 4, 6 x 4 and 8 x 4 / DN 100, 150 x 100

and 200 x 100 bodies 1U5728X0012
NPS 6, 8 x 6 and 12 x 6 /

DN 150, 200 x 150 and 300 x 150 bodies 1C210026232
NPS 8 / DN 200 body 1C215726012

38 Pipe Nipple, Plated Steel 1D239726232
45 Bushing Plated Steel (2 required) 1A3424X00A2
46 Washer (2 required) 1D716228982
47 Nut, (2 required) 1E944024112
48 U-Bolt 11B3469X012
49 Mounting Bracket

NPS 1 and 1-1/4 x 1 /

DN 25 and 32 x 25 bodies 37B4475X012
NPS 2 x 1 and 2 /

DN 50 x 25 and 50 bodies 31B3466X012
NPS 3 / DN 80 body 31B3467X012
NPS 4, 6 x 4 and 8 x 4 / DN 100, 150 x 100

and 200 x 100 bodies 31B3468X012
NPS 6, 8 x 6 and 12 x 6 /

DN 150, 200 x 150 and 300 x 150 bodies 31B4920X012
NPS 8 / DN 200 body GE13864X012

50 Cap screw (2 required)

NPS 2 x 1, 2, 3, 4, 6 x 4, 8 x 4 , 6, 8 x 6,

12 x 6 / DN 50 x 25 , 50 , 80, 100, 150 x 100

and 200 x 100, 150, 200 x 150,

300 x 150 bodies 1A344424052

73 Stud, Zinc-plated steel (2 required) 1H2597X0012

PRX Series Mounting Parts (Figure 22)

Key Description Part Number

63 Nipple, Pipe, Hex

NPS 1, 1-1/4, 2x 1, 2, 3, 4, 6 x 4 and 8 x 4 /

DN 25, 32, 50 x 25, 50, 80, 100, 150 x 100

and 200 x 100 bodies GE13860X012

64 Nipple

NPS 6, 8 x 6, 12 x 6, 8 /

DN 150, 200 x 150, 300 x 150, 200 bodies 1C782526012

65 Coupling

NPS 6, 8 x 6, 12 x 6, 8 /

DN 150, 200 x 150, 300 x 150, 200 bodies 1H724028992

66 Bushing

NPS 6, 8 x 6, 12 x 6, 8 /

DN 150, 200 x 150, 300 x 150, 200 bodies 1C379026232

67 Nipple, Pipe, NPT,

NPS 6, 8 x 6, 12 x 6, 8 /

DN 150, 200 x 150, 300 x 150, 200 bodies 1C488226232

68 Elbow, FNPT, Pipe, All sizes - - - - - - - - - - ­69 Adaptor, NPS 4, 6 x 4 and 8 x 4 / DN 100,

150 x 100 and 200 x 100 bodies only GE19749X012

30

Type EZR

Pounds to Pounds (161EB Series Pilots)
Monitor System Mounting Parts (Figure 23)

Key Description Part Number

29 Pipe Nipple, Plated steel

NPS 1 and 1-1/4 / DN 25 and 32 bodies - - - - - - - - - - ­NPS 2 / DN 50 body - - - - - - - - - - ­NPS 3 / DN 80 body - - - - - - - - - - ­NPS 4 / DN 100 body - - - - - - - - - - ­NPS 6 / DN 150 body - - - - - - - - - - ­NPS 8 x 6 and 12 x 6 /

DN 200 x 150 and 300 x 150 bodies - - - - - - - - - - -

NPS 8 / DN 200 body - - - - - - - - - - -

38 Pipe Nipple, Plated steel - - - - - - - - - - -

Pounds to Inches (161AY/161EB Series
Pilots) Monitor System Mounting Parts
(Figure 24)

Key Description Part Number

38 Pipe Nipple, Galvanized Steel - - - - - - - - - - ­45 Bushing, Plated Steel (2 required) - - - - - - - - - - ­138 Pipe Nipple, Galvanized Steel - - - - - - - - - - ­139 Coupling, Steel - - - - - - - - - - ­140 Bushing, Plated Steel - - - - - - - - - - ­141 Pipe Nipple, Galvanized Steel - - - - - - - - - - -

Pre-piped Pilot Supply (Figure 25)

Key Description Part Number

59 Pipe Nipple, for use without Type 252 lter

NPS 1 / DN 25 body - - - - - - - - - - ­NPS 2, 3 and 4 / DN 50, 80 and 100 bodies - - - - - - - - - - ­NPS 6, 8 x 6 and 12 x 6 /

DN 150, 200 x 150 and 300 x 150 bodies - - - - - - - - - - -

60 Elbow, for use without Type 252 lter - - - - - - - - - - -

61 Tubing Connector, for use without

Type 252 filter (1 required with Type 252,

2 required without Type 252)

Steel - - - - - - - - - - ­Stainless Steel - - - - - - - - - - -

62 Tubing, Stainless steel - - - - - - - - - - -

68 External Elbow, for use with Type 252 lter

Steel - - - - - - - - - - ­Stainless Steel - - - - - - - - - - -

81 Nipple, for mounting Type 252 lter

NPS 1, 2, 3 and 4 /

DN 25, 50, 80 and 100 bodies - - - - - - - - - - -

NPS 6, 8 x 6 and 12 x 6 /

DN 150, 200 x 150 and 300 x 150 bodies - - - - - - - - - - -

NPS 8 / DN 200 body - - - - - - - - - - -

PRX Series Pilots (Figure 26)

Key Description Part Number

Parts Kits

Elastomer Parts Kits (includes keys: 4, 5, 14, 17,

18, 25 and 28)

Nitrile (NBR) RPRX00X0N12
Fluorocarbon (FKM) RPRX00X0F12

Full Parts Kits (includes keys: 4, 5, 14, 17, 18,

22, 25 and 28)

Nitrile (NBR) RPRX00X0N22

Fluorocarbon (FKM) RPRX00X0N22

1 Adjusting Screw M0253340X12
2 Locknut M5036008X12
3 Cap M0253350X12
4* Upper Cover O-ring See Parts Kits
5* O-ring See Parts Kits
6 Upper Spring Seat M0253360X12
7 Spring See Table 2
8 Upper Cover M0298540X12
9 Lower Spring Seat M0253380X12
10 Machine Screw M5011018X12
11 Washer (14 required) M5055001X12
12 Filter M4500367X12
13 Upper Diaphragm Plate (2 required) M0253390X12
14* Diaphragm See Parts Kits
15 Lower Diaphragm Plate M0253410X12
16 Body M0253310X12

17* Orice O-ring See Parts Kits

18* Lower Cover O-ring See Parts Kits

19 Orice M0253440X12

20 Nut M5002004X12
21 Lower Cover M0298600X12
22* Pad Holder

Polyurethane (PU) ERAA1220A0
Fluorocarbon (FKM) M0279950X12

23 Stem M0253430X12
24 Nameplate - - - - - - - - - - ­25* Stem O-ring See Parts Kits
26 Upper Diaphragm Nut M5028005X12
27 Damper Adjusting Screw with Hole M0253480X12
28* Restrictor/Damper O-ring See Parts Kits
29 Plate GD25440X012
29 Damper/Restrictor Plate

Types PRX/120 and PRX/120-AP M0254400X12
Types PRX/125 and PRX/125-AP M0257930X12

30 Ring Nut (2 required) M0253490X12
31 Nameplate Screw M5061001X12
32 Restrictor Adjusting Screw with Hole M0253480X12
33 Plug (Types PRX/125 and PRX/125-AP Only) M0257920X12
34 Plug (Types PRX/125 and PRX/125-AP Only) M4500328X12
35 Spring barrel Extension for AP M0274100X12

*Recommended Spare Part

31

Type EZR

21

20

19

17

2

14

70

22

15

4

6

18

16

64

12

10

11

5

7

8

48B2142
B2617_2

MAIN VALVE ASSEMBLY FOR NPS 1, 1-1/4 x 1, 2 x 1, 2, 3, 4, 6 x 4 AND 8 x 4 / DN 25, 32 x 25, 50 x 25, 50, 80, 100, 150 x 100 AND 200 x 100 BODY SIZES

(NOTE: SEE NPS 2 x 1 / DN 50 X 25 ASSEMBLY FOR ADDITIONAL PARTS)

28

9

13

1

23

32

Figure 14. Type EZR Main Valve

19B2408

21

20

19

17

14

11

10

5

7

71

70

2

23

1

126

121

8

13

9

79

28

12

64

16

18

6

4

15

22

TOP PLUG (KEY 5)

O-RING (KEY 14)

O-RING (KEY 70)

DIAPHRAGM (KEY 9)

BOTTOM PLUG (KEY 11)

O-RING (KEY 10)
LOCK WASHER (KEY 130)
SOCKET HEAD SCREW (KEY 129)

Type EZR

NPS 1, 1-1/4 x 1 AND 2 x 1 / DN 25, 32 x 25 AND 50 x 25

21

20

19

17

2

14

70

11

10

5

7

71

MAIN VALVE ASSEMBLY FOR NPS 6, 8 x 6 AND 12 x 6 /

DN 150, 200 x 150 AND 300 x 150 BODY SIZES

121

126

DIAPHRAGM ASSEMBLY

22

15

4

6

18

16

64

12

28

9

79

13

121

8

126

1

23

133

131

121

67

132

49B5067

NPS 2 x 1 / DN 50 x 25 MAIN VALVE ASSEMBLY

66

66

67

NPS 8 x 6 / DN 200 x 150 RESTRICTOR PLATE O-RING PLACEMENT

67

Figure 14. Type EZR Main Valve (continued)

33

Type EZR

144

143

24

26

21

22

2

16

L

18

19

L

136

47

25

4

20

19

6

L

64

17

142

28

L

14

9

11

7

8

40C3570-C

APPLY LUBRICANT (L)

PARTS NOT SHOWN: 63

L

12

15

137

70

L

10

13

5

1

23

MAIN VALVE ASSEMBLY FOR NPS 8 / DN 200 BODY

34

Figure 14. Type EZR Main Valve (continued)

Type EZR

B2617_C

B2617_A2

24

26

3

25

Figure 15. Type EZR Nameplate and Flow Arrow

8

72

71

23

B2617_D

B2617_E

Figure 16. Type EZR Restricted Trim Figure 17. Type EZR Cage O-ring Placement

19

3

NPS 1, 1-1/4 x 1, 2 x 1, 2, 3 AND 4 /

DN 25, 32 x 25, 50 x 25, 50, 80 AND 100 BODY SIZES

DN 150 x 100, 200 x 100, 150, 200 x 150, 300 x 150 BODY SIZES

NPS 6 x 4, 8 x 4, 6, 8 x 6, 12 x 6 /

19

3

Figure 18. Type EZR Travel Indicator Plug Option

35

Type EZR

11

37B1199

12

8

16

17

9

38

10

7

4

6

2

18

1

15

37B1212

3

TYPE 161EB PILOT

11

12

8

9

7

15

4

6

TYPE 161EBH PILOT

16

17

2

18

1

15

3

19

10

23

19

1

1

22

37B1213

TYPE 161EBHM

APPLY LUBRICANT (L)

22

SENSE
(EXHAUST)
PORT

TYPE 161EBM PILOT

Figure 19. 161EB Series Pilots

Table 15. 161EB Series Pilot Part Numbers (keys 7, 8, 9, 10 and 11, Figure 19)

OUTLET (CONTROL) PRESSURE RANGE AND SPRING COLOR CODE

Green

(3)

Type 161EBH or 161EBHM

250 to 450 psig /

17.2 to 31.0 bar,
Blue

(2)

12B0703X012 12B0703X012

(2)

12B0702X022 - - - - - - - - - - -

400 to 700 psig /

27.6 to 48.3 bar,
Red

KEY

7

8 Spring Seat 17B0515X012 17B0515X012 17B0515X012 17B0515X012 17B0515X012 17B0515X012 19B9059X012 17B0515X012 17B0515X012

9 Spring 17B1260X012 17B1262X012 17B1259X012 17B1261X012 17B1263X012 17B1264X012 15A9258X012 17B1263X012 17B1264X012

10 Diaphragm Limiter - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 10B4407X012 10B4407X012 22B0590X012 22B0590X012

11 Adjusting Screw 10B3081X012 10B3081X012 10B3081X012 10B3081X012 10B3081X012 10B3080X012 17B1227X012 10B3080X012 10B3080X012

1. Standard assembly for stainless steel construction; 1/32 in. / 0.8 mm thick diaphragm and 1-3/4 in. / 45 mm diaphragm plate diameter.

2. Standard assembly for stainless steel construction; 1/32 in. / 0.8 mm thick diaphragm and 1-1/2 in. / 38 mm diaphragm plate diameter.

3. Should only be used as the intermediate reduction pilot on the Type EZR worker/monitor systems.

PART

NAME

Diaphragm Assembly,

Nitrile (NBR)

Diaphragm Assembly,

Fluorocarbon (FKM)

5 to 15 psig /

0.34 to 1.0 bar
White

17B9055X022

17B9055X062

10 to 40 psig /

0.69 to 2.8 bar
Yellow

(1)

17B9055X022

(1)

17B9055X062

Type 161EB or 161EBM Type 161EB

30 to 75 psig /

2.1 to 5.2 bar

(1)

17B9055X022

(1)

17B9055X062

Black

70 to 140 psig /

4.8 to 9.7 bar
Green

(1)

17B9055X022

(1)

17B9055X062

130 to 200 psig /

9.0 to 13.8 bar
Blue

(1)

17B9055X022

(1)

17B9055X062

200 to 350 psig /

13.8 to 24.1 bar

(1)

17B9055X032

(1)

17B9055X052

Red

30 to 300 psig /

2.1 to 20.7 bar

(2)

17B9055X032

(2)

17B9055X052

36

Type EZR

27

10

48

4

49

8

40

7

16

17

14

18

11

50

1

55

39

6

56

25

38

22

37

35

21

3

12

15

13

5

B2631

2

TYPE 161AY

26

47

46

24

30

31

33

B2632

B2631

TYPE 161AYM

Figure 20. Types 161AY and 161AYM Pilots

37

Type EZR

40C1205

TYPE 252

13

TYPE PRX

21

63

69

1

NOTE:

NPS 4 / DN 100 BODY ONLY

1

N

4

U

R

2

20B4393-A

APPLY LUBRICANT

TYPE PRX PILOT

21

S

T

A

R

6

T

8

14

Figure 21. Type 112 Restrictor

24

22

TYPE 112

41B3471

23

NPS 1 / DN 25 ONLY

OR

734

50

49

29

TYPE 161AY
OR 161AYM

45

46

47

48

TYPE 161AY PILOT

MOUNTING FOR NPS 1 THROUGH 4 /

DN 25 THROUGH 100 TYPE EZR REGULATOR

TYPE 252

13

GE18431

TYPE PRX

TYPE PRX PILOT

MOUNTING FOR NPS 6 AND 8 / DN 150 AND 200

TYPE EZR REGULATOR

Figure 22. Types PRX and 161AY Pilot Mounting Parts

MOUNTING FOR NPS 1 THROUGH 6 /

DN 25 THROUGH 150 TYPE EZR REGULATOR

NPS 1 / DN 25 ONLY

OR

734

50

49

64

65

TYPE 112

66

67

21

41B3471

29

TYPE 161AY
OR 161AYM

45

46

47

48

TYPE 161AY PILOT

MOUNTING FOR NPS 8 / DN 200

TYPE EZR REGULATOR

38

Type EZR

29

B2612

38

Figure 23. Pounds to Pounds (161EB Series Pilots) Working Monitor Mounting Parts

TYPE 399A
OR EZR

TYPE 161EB
OR 161EBM

29

TYPE 112

45

46

47

48

41B5009

Figure 24. Pounds to Inches (161AY/161EB Series Pilots)

Monitor System Mounting Parts

50

38

45

TYPE 161AYM

PILOT

81

68

62

TYPE 252

61

37B8952

Figure 25. Pre-piped Type EZR with Type 161EB Pilot,

Type 112 Restrictor and Type 252 Pilot Supply Filter

39

Type EZR

1

2

S

3

4

5

6

4

35

7

8

26

11

18

25

9

10

11

12

TYPE PRX/120-AP OR PRX/125-AP

4

28

34

TYPE PRX/125 OR PRX/125-AP

S

13

24

23

22

21

11

10

TYPE PRX/120 OR PRX/125

14

15

16

17

14

18

19131120

S - SUPPLY PORT
B - BLEED PORT
L - LOADING PORT
A - SENSING PORT
D - DAMPER
R - RESTRICTOR

32

28

TYPE PRX/120 OR PRX/120-AP

L

33

27

28

B

29

D

30

31

L

27

28

B

29

D

30

R

31

30

[e-mail]

Fisher.com

Emerson Automation Solutions

Americas

McKinney, Texas 75070 USA
T [phone]

[phone]

Europe

Bologna 40013, Italy
T [phone]

Figure 26. PRX Series Pilot Assembly

Facebook.com/EmersonAutomationSolutions

LinkedIn.com/company/emerson-automation-solutions

Twitter.com/emr_automation

Asia Pacic

Singapore 128461, Singapore
T [phone]

Middle East and Africa

Dubai, United Arab Emirates
T [phone]

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Technologies, Inc. All rights reserved. 08/18.
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