Emerson 161EBM, 161EB, 161AY, 161, 161EBH Installation Manual

Installation Guide
D103232X014

English - August 2018

161 Series

Introduction

This installation guide provides instructions for installation,
startup and adjustment. To receive a copy of the Instruction

Manual, contact your local Sales O󰀩ce or view a copy at
www.sher.com. For further information refer to: 161 Series
Instruction Manual, D103232X012.

P.E.D. Categories

This product may be used as a pressure accessory with
pressure equipment in the following Pressure Equipment

Directive categories. 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: D103053X012.

TYPE PRODUCT SIZE CATEGORY

161EB NPS 1/4

161AY DN 15 / NPS 1/2

SEP

Specications

Outlet (Control) Pressure Ranges

See Table 1

Proportional Bands

See Table 1

Maximum Inlet Pressures

161, 161M, 161EB, 161EBH, 161EBM or 161EBHM:

103 bar / 1500 psig
161AY, 161AYM or 161AYW: 10.3 bar / 150 psig

Pilot Flow Coe󰀩cients

See Table 2

Options

Type 252 Pilot supply lter

Pilot Sping Case Vent

1/4 NPT (internal)

(1)

Installation

WARNING

!

Only qualied personnel shall install or service
a relief valve/backpressure regulator. Relief
valves and backpressure 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 uid 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 uid 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
Specications section, or where conditions
exceed any ratings of the adjacent piping or

piping connections.

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 result in personal injury
and property damage due to escaping uid.
To avoid such injury and damage, install the

regulator in a safe location.

Table 1. Outlet (Control) Pressure Ranges and Proportional Bands

PILOT TYPE

161 or 161M

161AY, 161AYM or 161AYW

161EB or 161EBM

161EBH or 161EBHM

1. Proportional band includes outlet pressure drop plus hysteresis (friction), but does not include lockup.

2. Proportional band was determined with a pressure drop ranging from 3.4 to 10.3 bar / 50 to 150 psig. Approximately double the proportional band if the pressure drop is less than 3.4 bar / 50 psig

3. With Type 112 restrictor set on 2.

4. The spring ranges for the Type 161AYW is 7.5 to 30 mbar / 3 to 12 in. w.c.

5. The spring ranges for the Type 161AYW is 27 to 62 mbar / 11 to 25 in. w.c.

6. The spring ranges for the Type 161AYW is 0.06 to 0.17 bar / 0.9 to 2.5 psig.

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

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

OUTLET (CONTROL) PRESSURE RANGE PROPORTIONAL BAND

bar psig bar psig

0.34 to 1.03 5 to 15 0.14 2

0.69 to 8.62 10 to 125 0.14 2

8.3 to 20.7 120 to 300 0.41 6

15 to 37 mbar

0.03 to 0.08

0.08 to 0.17

0.17 to 0.31 2.5 to 4.5 0.03 0.5

0.31 to 0.48 4.5 to 7 0.03 0.5

0.34 to 1.03 5 to 15 0.03 0.5

0.69 to 2.76 10 to 40 0.03 0.5

2.07 to 5.17 30 to 75 0.04 0.6

4.83 to 9.65 70 to 140 0.09 1.3

8.96 to 13.8 130 to 200 0.10 1.5

13.8 to 24.1 200 to 350 0.21 3

17.2 to 31.0 250 to 450 0.24

27.6 to 48.2 400 to 700 0.48

(4)

(5)

0.5 to 1.2

(6)

1.2 to 2.5

6 to 15 in. w.c.

(4)

(5)

(6)

0.03 0.5

2 mbar 1 in. w.c

2 mbar 1 in. w.c

(7)

(7) 7(7)

(1)(2)(3)

3.5

(7)

161 Series

Orice Size C

2.4 mm / 3/32 in.

3.2 mm / 1/8 in.

6.4 mm / 1/4 in.

Table 2. Pilot Flow Coecients

161AY SERIES 161EB SERIES

6.9

12.3
50

g

C

0.20

0.35

1.43

v

C

1

35
35
35

Orice Size C

3.18 mm / 1/8 in. 8.5 0.28 30.4

g

C

v

C

1

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 anged bodies, use suitable line gaskets and approved

piping and bolting practices. Install the regulator in any

position desired, unless otherwise specied, but be sure ow
through the body is in the direction indicated by the arrow on

the body.

Note

It is important that the regulator be installed
so that the vent hole in the spring case
is unobstructed at all times. For outdoor
installations, the regulator should be located
away from vehicular tra󰀩c 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
shuto󰀨 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.

2

Parts List

161 and 161EB Series Pilots
(Figures 1 through 3)

Key Description

1 Body Assembly
2 Spring Case
3 Body Plug
4* Valve Plug
6 Plug Spring
7* Diaphragm Assembly
8 Upper Spring Seat
9 Control Spring
10 Diaphragm Limiter
11 Adjusting Screw
12 Locknut
13 Machine Screw (6 required)
14 Pipe Plug
15 Body Plug O-ring
16 Closing Cap
17* Closing Cap Gasket
18 Type Y602-12 Vent Assembly
19* Stem Guide Seal Assembly, Types 161M,

161EBM and 161EBHM
22 O-ring, Types 161M, 161EBM and 161EBHM
23 O-ring, Types 161, 161M and 161EBHM
26 Gauge, Type 161EB
38 Lower Spring Seat, Types 161EB and 161EBM

Types 161AY, 161AYM and 161AYW Pilots
(Figure 4)

Key Description

1 Body
2 Cap Screw (2 required)
3 Spring Case Assembly
4 Lower Casing
5 Orice
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 (Types 161AY and 161AYM only)
16 Lever Assembly
17 Machine Screws (2 required)
18 Guide Insert
21 Hex Nut
22 Closing Cap
23 Hex Nut (8 required)
24 Cap Screw (8 required)
25 Closing Cap Gasket, for steel closing cap
26 Vent Assembly
30* Stem Seal O-ring (Type 161AYM only)
31* Throat Seal (Type 161AYM only)
33* Machine Screw (Type 161AYM only)
35 Adjusting Screw
37 Spring Holder
38 Machine Screw
39 Overpressure Spring
40 Pusher Post Connector
46 Nameplate
47 Drive Screw (2 required)
48* Post Seal

*Recommended Spare Part

161 Series

11 16

12

8

9

7

13

23

4

6

32B0707

APPLY LUBRICANT
PARTS NOT SHOWN: KEY 14

TYPE 161 TYPE 161M

Figure 1. Type 161 Monitor Pilot Assembly Figure 2. Type 161M Monitor Pilot Assembly

11

17

12

16

17

8

2

18

9

7

13

10

23

2

18

10

1

1

19

15

3

22

4

15

3

6

32B0708_D

APPLY LUBRICANT

11

12

8

9

38

13

7

4

37B1208

6

APPLY LUBRICANT
PARTS NOT SHOWN: KEYS 10, 14 AND 26

TYPE 161EB

16

17

2

19

22

37B2946_B

18

1

15

23

22

3

37B1213

Figure 3. 161EB Series Monitor Pilot Assemblies

1

TYPE 161EBM

19

10

1

TYPE 161EBHM

Key Description

49* Connector Seal
50 Backup Ring
51 Washer (Type 161AYW only)
52 Spring (Type 161AYW only)
53* O-ring (Type 161AYW only)

*Recommended Spare Part

Key Description

54* Groove Pin (Type 161AYW only)
55 Restriction (Types 161AY and 161AYM only)
56 Ba󰀪e Plate (Types 161AY and 161AYM only)
57* Bleed Assembly (Type 161AYW only)

3

161 Series

47B8950_B

27

55

10

48

4

49

8

40

7

16

17

39

6

56

25

38

22

37

35

21

14

18

3

12

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

31

33

15

13

5

11

50

15

13

30

TYPE 161AYM

1

26

TYPE 161AY

5

47

51

57

46

24

53

52

TYPE 161AYW

APPLY LUBRICANT
PARTS NOT SHOWN: KEY 23

[e-mail]

Fisher.com

Emerson Automation Solutions

Americas
McKinney, Texas 75070 USA
T [phone]

[phone]

Europe
Bologna 40013, Italy
T [phone]

For further information on the current
PED revision see Bulletin: D103053X012

or scan the QR code.

54

47B8951_B47B3689B

Figure 4. 161AY Series Monitor 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]

2

OUTER COMPONENTS

D103232X014 © 2008, 2019 Emerson Process Management Regulator
Technologies, Inc. All rights reserved. 08/19.
The Emerson logo is a trademark and service mark of Emerson
Electric Co. All other marks are the property of their prospective owners.
Fisher™ is a mark owned by Fisher Controls International LLC, a
business of Emerson Automation Solutions.

The contents of this publication are presented for informational purposes

only, and while every e󰀨ort has been made to ensure their accuracy,
they are not to be construed as warranties or guarantees, express or

implied, regarding the products or services described herein or their

use or applicability. All sales are governed by our terms and conditions,
which are available upon request. We reserve the right to modify or
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without notice.

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product. Responsibility for proper selection, use and maintenance of any

Emerson Process Management Regulator Technologies, Inc. product
remains solely with the purchaser.