Fisher EZR Pressure Reducing Regulator Installation Guide

Page 1

Installation Guide D102600X014

English – January 2018

Type EZR

Introduction

This installation guide provides instructions for installation, startup and adjustment. To receive a copy of the instruction manual, contact your local Sales Office or view a copy at www.fisher.com. For further information refer to: Type EZR Instruction Manual, D102600X012.

P.E.D. Category

This product may be used as a safety accessory with pressure equipment in the following Pressure Equipment Directive. It may also be used outside of the Pressure Equipment Directive using Sound Engineering Practice (SEP) per table below. For information on the current PED revision see Bulletin: D10305 3 X012.

PRODUCT SIZE CATEGORIES FLUID GROUP

DN 25 / NPS 1 SEP

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

200 x 150 / NPS 2, 2 x 1, 3, 4, 6, 8, 8 x 6

I, II, III

Specifications

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

See Table 1

Maximum Inlet Pressures and Pressure Drops

Main Valve: See Table 6 Pilots: See Table 3 Restrictor: 103 bar / 1500 psig

(1)(2)

(1)

Outlet (Control) Pressure Ranges

See Table 2

Minimum and Maximum Differential Pressures

(1)

See Tables 4 and 6

Proof Test Pressure

All Pressure Retaining Components have been proof tested per Directive

Temperature Capabilities

(1)

See Table 5

Pilot Type Descriptions

Type 161AY—Low-pressure pilot with an outlet

pressure range of 15 mbar to 0.48 bar / 6 in. w.c. to 7 psig. Pilot bleeds (exhausts) downstream through the sense (control) line.

Type 161AY M —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 0.34 to 24.1 bar / 5 to 350 psig. 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).

1. The pressure/temperature limits in this Instruction Guide 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 O󰀩ce for assistance.

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

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

50 x 25, 50, 80, 100 and 150 /

2 x 1, 2, 3, 4 and 6

25, 32 x 25, 50 x 25, 50, 80,

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

200 x 150 and 300 x 150 /

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

2. See Tables 3, 5 and 6 for diaphragm materials and additional pressure ratings.

3. Available in steel NPT only.

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

(3)

1, 1-1/4 x 1

, 2 x 1, 2, 3,

(4)

4, 6 x 4 8 x 6

(4)

, 8 x 4

, 6,

(4)

and 12 x 6

200 / 8 LCC Steel

Cast iron

WCC Steel

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

CL125 FF 13.8 bar / 200 psig

CL250 RF 34.5 bar / 500 psig

NPT or SWE (DN 25, 50 x 25 and 50 /

NPS 1, 2 x 1 and 2 only)

CL150 RF 20.0 bar / 290 psig

CL300 RF 51.7 bar / 750 psig

CL600 RF or BWE 103 bar / 1500 psig

CL150 RF 20.0 bar / 290 psig

CL300 RF 51.7 bar / 750 psig

CL600 RF 103 bar / 1500 psig

(1)

STRUCTURAL DESIGN RATING

103 bar / 1500 psig

(2)

Page 2

Type EZR

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

TYPE

161AY or

161AYM

161EB or

161EBM

(1)

161EB

TYPE

PRX/120 PRX/125

PRX/120-AP PRX/125-AP

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

bar psig

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

2.1 to 20.7 30 to 300

bar psig

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

30.0 to 69.0 435 to 1000

OUTLET (CONTROL) PRESSURE RANGE

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

14.5 to 26 23 to 44 41 to 80

73 to 123

116 to 210 203 to 334 319 to 435

Table 3. Pilot Pressure Ratings

TYPE

161AY 10.3 150 10.3 150

161EB 103 1500 82.7 1200

161AYM 10.3 150 10.3 150 10.3 150

161EBM 103 1500 82.7 1200 103 1500

PRX Series 102 1480 102 1480 102 1480

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

MAXIMUM INLET PRESSURE

bar psig bar psig bar psig

Type PR X /120 —Outlet pressure range of 1.00 to

MAXIMUM EMERGENCY OUTLET PRESSURE OR

MAXIMUM EMERGENCY SENSE PRESSURE

Installation

MAXIMUM BLEED (EXHAUST) PRESSURE

(1)

FOR MONITOR PILOTS

- - - -

30.0 bar / 14.5 to 435 psig. The Type PRX/120 can be used as the pilot on single-stage pressure reducing

WARNING

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 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 PR X /120- AP—Outlet pressure range of 30.0 to

69.0 bar / 435 to 1000 psig. 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 PR X /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 PR X /125- A P—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.

Only qualified personnel should install or service a regulator. Regulators should be installed, operated and maintained in accordance with international and applicable codes and regulations and Emerson Process Management Regulator Technologies, Inc. instructions.

If the regulator vents fluid or a leak develops in the system, it indicates that service is required. Failure to take the regulator out of service immediately may create a hazardous condition.

Personal injury, equipment damage or leakage due to escaping fluid 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 the Specifications section or where conditions exceed any ratings of the adjacent piping or piping connections.

Page 3

Type EZR

Table 4. Main Valve Minimum Dierential Pressures

MAIN VALVE

BODY SIZE,

DN / NPS

25 and 32 x 25 /

1 and 1-1/4 x 1

50 x 25 / 2 x 1

50 / 2

80 / 3

100, 150 x 100

and 200 x 100 /

4, 6 x 4 and, 8 x 4

150, 200 x 150

and 300 x 150 /

6, 8 x 6 and

12 x 6

200 / 8

1. See Table 1 for structural design ratings, Table 3 for pilot ratings and Table 6 for maximum pressure ratings.

2. The white and yellow springs are only recommended for inlet pressures under 6.9 bar / 100 psig.

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 34.5 bar / 500 psig.

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 1.7 24 2.0 29 2.2 31 1.7 24 2.2 31 2.8 40

GE12727X012, Black

19B2401X012,

Black with White Stripe

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

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)

(2)

(3)(4)

(2)

(3)

(2)

(3)

(2)

(3)

(2)

(3)

DIAPHRAGM

MATERIAL

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

17E97

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

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

1.1 16

1.8 26 2.1 30

MINIMUM DIFFERENTIAL, PERCENT OF CAGE CAPACITY

FOR 90% CAPACITY FOR 100% CAPACITY

- - - - - - - -

(1)

1.3 19

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

To avoid such injury or damage, provide pressurerelieving 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 result in personal injury and property damage due to escaping fluid. To avoid such injury and damage, install the regulator in a safe location.

Clean out all pipelines before installation of the regulator and check to be sure the regulator has not been damaged or has collected foreign material during shipping. For NPT bodies, apply pipe compound to the external pipe threads. For flanged bodies, use suitable line gaskets and approved piping and bolting practices. Install the regulator in any position desired, unless otherwise specified, but be sure flow through the body is in the direction indicated by the arrow on the body.

CAUTION

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

When installing a Type EZR trim package in an existing E-body, make sure flow is up through the center of the cage and down through the cage slots. In some cases, correct flow path is achieved by removing the body from the line and turning it around. If this is done, change the flow arrow to indicate the correct direction. Damage may result if flow is not in the correct direction. After assembly, check the regulator for shutoff sand leakage to atmosphere.

Note

It is important that the regulator be installed so that the vent hole in the spring case is unobstructed at all times.

Page 4

Type EZR

Table 5. Temperature Capabilities

17E68 NITRILE (NBR) 17E97 NITRILE (NBR)

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

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

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

(1)

17E88 FLUOROCARBON (FKM)

(2)

Table 6. Main Valve Maximum Pressure Ratings, Diaphragm Selection Information and Main Spring Selection

MAXIMUM EMERGENCY INLET AND DIFFERENTIAL

PRESSURE

BODY SIZE

DN / NPS

DIAPHRAGM

MATERIAL

MAXIMUM OPERATING

INLET PRESSURE

(4)

MAXIMUM OPERATING

DIFFERENTIAL

PRESSURE

(4)

MAIN SPRING COLOR CODE

(1)

DIAPHRAGM

DESIGNATION

bar psig bar d psid bar d psid

17E68 Nitrile (NBR)

Low temperature

25 and 32 x 25 /

1 and 1-1/4 x 1

50 x 25 / 2 x 1

50 / 2

80 / 3

100, 150 x 100 and 200 x 100 /

4, 6 x 4

and 8 x 4 /

150, 200 x 150 and

300 x 150 /

6, 8 x 6

and 12 x 6

200 / 8

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 34.5 bar / 500 psig.

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

4. These are recommendations that provide the best regulator performance for a typical application. Please contact your local Sales Office for further information if a deviation from the standard recommendations is required.

17E97 Nitrile (NBR) High pressure

and/or erosion resistance

17E88 Fluorocarbon (FKM) High aromatic hydrocarbon

content resistance

17E68 Nitrile (NBR)

Low temperature

17E97 Nitrile (NBR) High pressure

and/or erosion resistance

17E88 Fluorocarbon (FKM) High aromatic

hydrocarbon content resistance

17E68 Nitrile (NBR)

Low temperature

17E97 Nitrile (NBR) High pressure

and/or erosion resistance

17E88 Fluorocarbon (FKM) High aromatic hydrocarbon

content resistance

17E68 Nitrile (NBR)

Low temperature

17E97 Nitrile (NBR) High pressure

and/or erosion resistance

17E88 Fluorocarbon (FKM) High aromatic hydrocarbon

content resistance

17E68 Nitrile (NBR)

Low temperature

17E97 Nitrile (NBR) High pressure

and/or erosion resistance

17E88 Fluorocarbon (FKM) High aromatic hydrocarbon

content resistance

17E97 Nitrile (NBR)

High pressure and/or

erosion resistance

17E88 Fluorocarbon (FKM) High aromatic hydrocarbon

content resistance

17E97 Nitrile (NBR)

High pressure and/or

erosion resistance

6.9 100 6.9 100 6.9 100 Light Blue

31.7 460 27.6 400 31.7 460 Black

34.5 500 34.5 500 72.4 1050 Black

72.4 1050 55.2 800 72.4 1050 Black with White Stripe

6.9 100 6.9 100 6.9 100 Light Blue

34.5 500 34.5

51.7 750 34.5

(3)

500

(3)

51.7 750 Black

(3)

51.7 750 Black with White Stripe

6.9 100 6.9 100 6.9 100 Light Blue

24.8 360 20.7 300 24.8 360 Black with White Stripe

34.5 500 34.5 500 34.5 500 Black with White Stripe

72.4 1050 55.2 800 72.4 1050 Red Stripe

(2)

6.9 100 6.9 100 6.9 100 Light Blue

51.7 750 34.5

(3)

500

(3)

51.7 750 Black with White Stripe

6.9 100 6.9 100 6.9 100 Yellow

31.7 460 27.6 400 31.7 460 Green

34.5 500 34.5 500 72.4 1050 Green

(2)

72.4 1050 55.2 800 72.4 1050 Red

or Purple

(2)

6.9 100 6.9 100 6.9 100 Yellow

34.5 500 34.5

51.7 750 34.5

(3)

500

(3)

51.7 750 Green

(3)

51.7 750 Red

(2)

or Purple

(2)

6.9 100 6.9 100 6.9 100 Yellow

24.8 360 20.7 300 34.5 500 Light Blue

34.5 500 34.5 500 72.4 1050 Light Blue

72.4 1050 55.2 800 72.4 1050 Black

(2)

6.9 100 6.9 100 6.9 100 Yellow

(3)

34.5 500 34.5

51.7 750 34.5

500 51.7 750 Light Blue

(3)

500 51.7 750 Black

(2)

6.9 100 6.9 100 6.9 100 Yellow

24.8 360 20.7 300 34.5 500 Green

34.5 500 34.5 500 72.4 1050 Green

72.4 1050 55.2 800 72.4 1050 Red

(2)

6.9 100 6.9 100 6.9 100 Yellow

34.5 500 34.5

51.7 750 34.5

(3)

500

(3)

51.7 750 Green

(3)

51.7 750 Red

(2)

6.9 100 6.9 100 6.9 100 Yellow

34.5 500 34.5 500 72.4 1050 Green

72.4 1050 55.2 800 72.4 1050 Red

(2)

6.9 100 6.9 100 6.9 100 Yellow

34.5 500 34.5

51.7 750 34.5

(3)

500

(3)

51.7 750 Green

(3)

51.7 750 Red

(2)

6.9 100 6.9 100 6.9 100 Yellow

34.5 500 34.5 500 72.4 1050 Green

72.4 1050 55.2 800 72.4 1050 Red

(2)

130

Page 5

Type EZR

For outdoor installations, the regulator should be located away from vehicular traffic and positioned so that water, ice and other foreign materials cannot enter the spring case through the vent. Avoid placing the regulator beneath eaves or downspouts and be sure it is above the probable snow level.

Overpressure Protection

The recommended pressure limitations are stamped on the regulator nameplate. Some type of overpressure protection is needed if the actual inlet pressure exceeds the maximum operating outlet pressure rating. Overpressure protection should also be provided if the regulator inlet pressure is greater than the safe working pressure of the downstream equipment.

Regulator operation below the maximum pressure limitations does not preclude the possibility of damage from external sources or debris in the line. The regulator should be inspected for damage after any overpressure condition.

Startup

The regulator is factory set at approximately the midpoint of the spring range or the pressure requested, so an initial adjustment may be required to give the desired results. With proper installation completed and relief valves properly adjusted, slowly open the upstream and downstream shutoff valves.

Adjustment

To change the outlet pressure, remove the closing cap or loosen the locknut and turn the adjusting screw clockwise to increase outlet pressure or counterclockwise to decrease pressure. Monitor the outlet pressure with a test gauge during the adjustment. Replace the closing cap or tighten the locknut to maintain the desired setting.

Taking Out of Service (Shutdown)

WARNING

To avoid personal injury resulting from sudden release of pressure, isolate the regulator from all pressure before attempting disassembly.

CAUTION

E-body bonnets. Installing an improper bonnet can result in stem assembly breakage and unit failure. The bonnet can be identified by the Type EZR markings on the top.

Main Valve Parts List

Main Valve

Key Description

1 Valve Body 2 Bonnet Assembly 3 Cap Screw 4 Hex Nut 5 Top Plug 6* O-ring 7 Cage 8* Cage O-ring 9* Diaphragm 10* O -ring 11 Bottom Plug 12 Main Spring 13* Flanged Locknut 14* Top Plug O-ring 15 Stem 16 Backup Ring 17 Upper Spring Seat 18* O -r ing 19 Indicator Fitting 19 Indicator Plug 20 Indicator Washer 21 Indicator Cover 22 Indicator Protector 23 Inlet Strainer 23 Strainer Replacement Shim 24 Nameplate 25 Flow Arrow 26 Drive Screw 28* O-ring 47 Hex Nut, SA194 -2H

(DN 200 / NPS 8 body only)

Key Description

63 Pilot Supply Pipe Plug 64 Bonnet Pipe Plug 66 O-ring 67 O-ring 70* O-ring 71 Restrictor Plate 72 E-Ring 79 Washer 121 O -r ing 126 Cap Screw 129 Socket Head Screw 130 Lock Washer 131 Upper Adaptor (DN 50 x 25 /

NPS 2 x 1 body only)

132 Lower Adaptor (DN 50 x 25 /

NPS 2 x 1 body only)

133* O-ring, DN 50 x 25 and 200 /

NPS 2 x 1 and 8 bodies only 136 Stud (DN 200 / NPS 8 body only) 137 Lower Spring Seat, DN 200 /

NPS 8 body only 140 Bushing, DN 150, 200 x 150

and 300 x 150, 200 / NPS 6,

8 x 6 and 2 x 6, 8 bodies only

143 Lifting Flange, DN 200 /

NPS 8 body only 144 Yoke Locknut, DN 200 /

NPS 8 body only

161EB Series

Key Description

1 Body Assembly (Types 161EB and 161EBM) 2 Spring Case 3 Body Plug 4* Valve Plug 6 Plug Spring 7* Diaphragm Assembly 8 Control Spring Seat 9 Control Spring 10 Diaphragm Limiter 11 Adjusting Screw 12 Locknut 13 Machine Screw (Types 161EB an d 161E BM) 14 Pipe Plug (Type 161EB) 15 Body Plug O-ring 16 Closing Cap (Types 161EB and 161EBM only) 17* Closing Cap Gasket (Types 161EB and 161EBM only) 18 Type Y602-12 Vent Assembly 19* Stem Guide Seal Assembly 22 O-ring (Type 161EBM) 38 Lower Spring Seat (Type 161EBM)

Make sure to use a Type EZR bonnet. The Type EZR bonnet is NOT interchangeable with other Fisher™

* Recommended spare part

Page 6

Type EZR

126

121

48B2142 B2617_2

MAIN VALVE ASSEMBLY FOR DN 25, 32 X 25, 50 X 25, 50, 80, 100, 150 X 100

AND 200 X 100 / NPS 1, 1-1/4 X 1, 2 X 1, 2, 3, 4, 6 X 4 AND 8 X 4 B ODY SIZES

121

126

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

Types 161AY and 161AYM

Key Description

1 Body 2 Cap Screw 3 Spring Case Assembly 4 Lower Casing (Types 161AY

and 161AYM) 5 Orifice 6 Control Spring 7 Diaphragm Head 8 Pusher Post 10 Diaphragm 11 Body Seal 12 Insert Seal 13 Disk Assembly 14 Stem 15 Cotter Pin 16 Lever Assembly 17 Machine Screws 18 Guide Insert 21 Hex Nut 22 Closing Cap 23 Hex Nut

Key Description Key Description

25 Closing Cap 26 Vent Assembly 27 Pipe Plug (Type 161AY only) 30 Stem Seal O-ring

31 Throat Seal

33 Machine Screw

35 Adjusting Screw 37 Spring Holder 38 Machine Screw 39 Overpressure Spring 40 Pusher Post Connector 46 Nameplate 47 Drive Screw 48 Post Seal 49 Connector Seal 50 Backup Ring 55 Restriction 56 Baffle Plate

(Type 161AYM only)

Figure 1. Type EZR Main Valve Assembly

24 Cap Screw

19B2408

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

DIAPHRAGM ASSEMBLY

B2617_C

RESTRICTED TRIM

B2617_E

DN 25, 32 x 25, 50 x 25, 50, 80 AND 100 /

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

PRX Series Pilots

Key Description

1 Adjusting Screw 2 Locknut 3 Cap 4* Upper Cover O-ring 5* O-ring 6 Upper Spring Seat 7 Spring 8 Upper Cover 9 Lower Spring Seat 10 Machine Screw 11 Washer 12 Filter 13 Upper Diaphragm Plate 14* Diaphragm 15 Lower Diaphragm Plate 16 Body 17* Orifice O-ring 18* Lower Cover O-ring 19 Orifice 20 Nut 21 Lower Cover 22* Pad Holder 23 Stem 24 Nameplate 25* Stem O-rin 26 Upper Diaphragm

* Recommended spare part

27 Damper Adjusting Screw

with Hole

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)

28* Restrictor/Damper O-ring 29 Plate 29 Damper/Restrictor Plate

Types PRX/120 and

PRX/120-AP

Types PRX/125 and

PRX/125-AP 30 Ring Nut 31 Nameplate Screw 32 Restrictor Adjusting Screw

with Hole

33 Plug (Types PRX/125 and

PRX/125-AP Only)

34 Plug (Types PRX/125 and

PRX/125-AP Only)

35 Spring Barrel Extension for AP

Type 112 Restrictor

Key Description

14 Pipe Plug 21 Body 22 Groove Valve 23 Retainer 24* Groove Valve O-ring

Page 7

Type EZR

37B1199

APPLY LUBRICANT (L)

TYPE 161EB PILOT

31B5012-A

Figure 2. 161EB Series Pilots

B2632

TYPE 161EBM PILOT

SENSE (EXHAUST) PORT

SENSE (CONTROL) PORT

B2631

TYPE 161AY PILOT TYPE 161AYM PILOT

Figure 3. Types 161AY and 161AYM Pilots

Page 8

Type EZR

20B4393-A

APPLY LUBRICANT

Figure 4. Type 112 Restrictor

TYPE PRX/125 O R PRX/125-AP

19131120

TYPE PRX/120 OR PRX/120-AP

S - SUPPLY PORT

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

D - DAMPER

R - RESTRICTOR

TYPE PRX/120 O R PRX/125

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Emerson Automation Solutions

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+1 972 548 3574

Europe Bologna 40013, Italy T +39 051 419 0611

For further information on the current PED revision see Bulletin: D103053X012 or scan the QR code.

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

Figure 5. PRX Series Pilot Assembly

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