Emerson Fisher 92B User manual

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 92B Instruction Manual, D100703X012.

PED Categories

This product may be used as a safety 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.

PRODUCT SIZE CATEGORIES FLUID TYPE

DN 25 / NPS 1 SEP 1

DN 40, 50, 80, 100 / NPS 1-1/2, 2, 3, 4 II

Specifications

Available Configurations

Pilot-operated, globe-style pressure reducing

valve with post guiding and ow-to-close valve

plug action

Body Size and End Connection Style

See Table 1

Maximum Inlet Pressures and Temperatures(1)

See Table 3

Maximum Outlet (Casing) Pressure

Cast Iron: 10.3 bar / 150 psig or body rating limit,

whichever is lower

Steel/Stainless steel: 20.7 bar / 300 psig or body

rating limit, whichever is lower

Proof Test Pressure

All Pressure Retaining Components have been

proof tested per Directive.

Outlet Pressure Ranges(1)

See Table 2

Minimum Di󰀨erential Pressure Required for

Full Stroke(1)

1.4 bar / 20 psig with stainless steel

spring; 0.69 bar / 10 psig with Inconel®spring

Installation

WARNING

Only qualied 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 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.

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.

Inconel®is a trademark owned by Special Metals Corporation.

1. The pressure/temperature limits in this installation guide or any applicable standard limitation should not be exceeded.

Type 92B

Installation Guide

D100703X014

English – October 2014

Table 2. Outlet Pressure Ranges

CAUTION

Be sure to install Type 92B pilot above

the pipeline with the adjusting screw

pointing up and the control line sloped

at a downward pitch to the main line to

ensure proper condensate drainage.

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.

Regular 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.

WARNING

Failure to remove accumulated

condensate may result in severe

condensation induced water hammer

which may result in personal injury

or death.

Adjustment

To change the set 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.

Table 1. Body Sizes and End Connection Styles

BODY SIZE END CONNECTION STYLE

DN NPS Cast Iron Steel or Stainless Steel

25 1 NPT

NPT, SWE(1), CL150 RF, CL300 RF and PN 16/25/40 RF

40, 50 1-1/2, 2 NPT, CL125 FF and CL250 RF

80, 100 3, 4 CL125 FF and CL250 RF CL150 RF, CL300 RF, PN 16 RF and PN 25/40 RF

1. Available in steel bodies only.

PILOT TYPE

OUTLET PRESSURE

bar psig

Low Pressure

0.14 to 0.41

0.34 to 1.0

0.90 to 1.7

2 to 6

5 to 15

13 to 25

High Pressure

1.0 to 2.1

1.7 to 5.2

4.8 to 10.3

15 to 30

25 to 75

70 to 150

High Temperature 1.0 to 6.9

5.5 to 17.2

15 to 100

80 to 250

Type 92B

Table 3. Maximum Inlet Pressures and Temperatures

Parts List

Type 92B Main Valve

Key Description

19 Drive Screw

20 Warning Label (Cast iron only) (not shown)

21 Nameplate

51 Valve Body Assembly

52 Bottom Flange Assembly

53 Guide Bushing

54* Gasket

55 Cap Screw, For Cast iron and Steel bodies

56 Valve Plug

BODY

MATERIAL END CONNECTION MAXIMUM INLET PRESSURE MAXIMUM TEMPERATURE

bar psig °C °F

Cast Iron

NPT 17.2 250 208 406

CL125 FF 8.6 125 178 353

CL250 FF 17.2 250 208 406

Steel

NPT, SWE 20.7 300 232 450

CL150 RF 12.8 185 232 450

CL300 RF 20.7 300 316(1) 600(1)

PN 16/25/40 (DN 25, 40, 50 and 80 /

NPS 1, 1-1/2, 2 and 3) 20.7 300 316(1) 600(1)

PN 16 (DN 100 / NPS 4) 12.8 185 232 450

PN 25/40 (DN 100 / NPS 4) 20.7 300 316(1) 600(1)

Stainless Steel

NPT 20.7 300 232 450

CL150 RF 12.1 175 232 450

CL300 RF 20.7 300 316(1) 600(1)

PN 16/25/40 (DN 25, 40, 50 and 80 /

NPS 1, 1-1/2, 2 and 3) 20.7 300 316(1) 600(1)

PN 16 (DN 80 and 100 / NPS 3 and 4) 12.1 175 232 450

PN 25/40 (DN 80 and 100 / NPS 3 and 4) 20.7 300 316(1) 600(1)

1. 232°C / 450°F with standard seat ring, 316°C / 600°F with seal weld option.

30A6348-B1A

Figure 1. Type 92B Main Valve Assembly

*Recommended spare part.

Key Description

57 Spring

58* Seat Ring

59 Diaphragm Head

60* Diaphragm

61 Bleed Fitting

62 Diaphragm Case

63 Cap Screw

64 Hex Nut

69 Pipe Plug

63 61

Type 92B

Type 92B Pilot

Key Description

1 Pilot Valve Body

2 Valve Guide

3 Valve Spring

4* Valve Plug

5* Orice

7 Valve Stem

8 Bellows Retainer

9 Bellows

10* Diaphragm

11 Lower Spring Seat

12 Spring

13 Upper Spring Seat

14 Spring Case

15 Set Screw

16 Hex Nut

17 Cap Screw

18* Diaphragm Gasket

19 Drive Screw

20 Nameplate

22 Pipe Nipple

24 Diaphragm Plate Assembly

34 Machine Screw

74 Pipe Plug

75 Check Valve Assembly

77 Screen

*Recommended spare part.

BF9827-G

Figure 2. High-Pressure Pilot Assembly

CJ8998-E

Figure 3. Low-Pressure Pilot Assembly

12 14

1 2 3 4

Type 92B

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[email protected]

Emerson Automation Solutions

For further information on the current

PED revision see Bulletin: D103053X012

or scan the QR code.

Fisher.com

Americas

McKinney, Texas 75070 USA

T +1 800 558 5853

+1 972 548 3574

Europe

Bologna 40013, Italy

T +39 051 419 0611

Asia Pacic

Singapore 128461, Singapore

T +65 6777 8211

Middle East and Africa

Dubai, United Arab Emirates

T +971 4 811 8100

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 information purposes

only, and while effort 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 on request. We reserve the right to modify or improve the

designs or specications of our products at any time without notice.

Emerson Process Management Regulator Technologies, Inc does not

assume responsibility for the selection, use or maintenance of any

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

Emerson Process Management Regulator Technologies, Inc. product

remains solely with the purchaser.

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