Emerson Fisher 92B Instruction Manual

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Instruction Manual D100703X012

July 2019

Type 92B Pressure Reducing Valve

WARNING

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

re and/or chemical contamination

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.

Type 92B

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.

Installation, operation and maintenance

procedures performed by unqualied

personnel may result in improper adjustment and unsafe operation. Either condition may result in equipment

damage or personal injury. Use qualied

personnel when installing, operating and maintaining the Type 92B regulator.

Introduction

Scope of the Manual

This manual provides instructions for installation, startup, maintenance and parts ordering information for the Type 92B Valve. Instructions and parts lists for other equipment used with these valves are found in separate manuals. The Type 92B is also available with a Type 6492HM or 6492HTM safety override pilot.

Product Description

The Type 92B Pressure Reducing Valve is the standard steam valve for industry. It can withstand

W8264

Figure 1. Type 92B Pressure Reducing Valve

dirty operating environments while providing accurate and stable pressure control. The Type 92B is applied as a main pressure reducing valve in industrial process heating applications such as heat exchangers, evaporators, digesters and reactors. Commercial applications include pressure reducing valves for meter runs found in district energy systems, hot water heat exchangers, absorption chillers and boiler deaerator tanks.

A Type 6492HM safety override pilot is available for the Type 92B. The Type 92B pilot is used in a series installation with the Type 6492HM safety override pilot installed on the upstream valve. The Type 6492HM safety override pilot senses pressure downstream of the second valve and prevents pressure from rising above safe operating pressure in the event the downstream valve fails. This system is approved by ASME B31.1-1989, 122.14.2.A, and can replace an ASME safety valve when vent piping is not practical and upstream steam pressure does not exceed 400 psig /

27.6 bar. Local codes and standards may require approval by an appropriate authority prior to installation.

Type 92B

Specications

Specications are given for the Type 92B valve on below. Specications for a given valve as it originally comes from

the factory are stamped on the nameplate.

Available Congurations

Pilot-operated globe-style pressure

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

valve plug action

Body Sizes and End Connection Styles

See Table 1

Body Ratings and Maximum Inlet Pressures

(1)

See Table 3

Maximum Outlet (Casing) Pressure Cast Iron: 150 psig / 10.3 bar or body rating

limit, whichever is lower Steel/Stainless steel: 300 psig / 20.7 bar or body rating limit, whichever is lower

Outlet Pressure Ranges

(1)

Minimum Di󰀨erential Pressure Required for

Full Stroke

20 psig / 1.4 bar with stainless steel spring; 10 psig / 0.69 bar with Inconel® spring

Pressure Registration

External

Temperature Capabilities

See Table 3

Downstream Control Line Connections

NPS 1 and 1-1/2 / DN 25 and 40 bodies: 1/4 NPT

NPS 2 / DN 50 body: 3/8 NPT NPS 3 and 4 / DN 80 and 100 bodies: 1/2 NPT

See Table 2

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

Table 1. Body Sizes and End Connection Styles

BODY SIZES END CONNECTION STYLE

NPS DN Cast Iron Body

1 25 NPT

1-1/2 and 2 40 and 50

3 and 4 80 and 100

1. Available in steel bodies only.

NPT,

CL125 FF and

CL250 RF

CL125 FF

and CL250 RF

(1)

Steel or

Stainless Steel Body

NPT, SWE

and PN 16/25/40 RF

CL150 RF, CL300 RF,

PN 16 RF and PN 25/40 RF

CL150 RF, CL300 RF

(1)

PILOT TYPE

Low

Pressure

High

Pressure

High

Temperature

OUTLET PRESSURE

psig bar In. mm In. mm

2 to 6

5 to 15

13 to 25

15 to 30 25 to 75

70 to 150

15 to 100 80 to 250

0.14 to 0.41

0.34 to 1.0

0.90 to 1.7

1.0 to 2.1

1.7 to 5.2

4.8 to 10.3

1.0 to 6.9

5.5 to 17.2

WARNING

The Type 92B safety override system

does not provide positive shuto󰀨 in

dead end service. It is intended for large distribution systems where steam

Inconel® is a trademark owned by Special Metals Corporation.

Table 2. Outlet Pressure Ranges

PART NUMBER COLOR CODE

1E395627022 1D7455T0012 1E395727192

14B9943X012 14B9942X022

Yellow Green

Red

Yellow Green

Red

Unpainted Unpainted

leakage will condense before steam pressure builds up. Downstream piping and components must be rated for maximum upstream steam pressure for dead end service. Failure to do so could cause personal injury or death.

SPRING WIRE DIAMETER SPRING FREE LENGTH

0.207

0.234

0.283

0.207

0.234

0.283

0.282

0.375

5.26

5.94

7.19

5.26

5.94

7.19

7.16

9.53

2.50

2.62

2.44

2.50

2.62

2.44

2.50

63.5

66.5

62.0

63.5

66.5

62.0

63.5

Type 92B

CONTROL LINE

MAIN VALVE DIAPHRAGM

VALVE PLUG

E0672_1

INLET PRESSURE

OUTLET PRESSURE ATMOSPHERIC PRESSURE LOADING PRESSURE

ORIFICE

MAIN VALVE SPRING

PILOT CONTROL LINE

Figure 2. Type 92B Operational Schematic

PILOT SPRING

PILOT SUPPLY LINE

PILOT DIAPHRAGM

PILOT VALVE PLUG

Principle of Operation

Refer to the operational schematic in Figure 2. Compression of the pilot spring pushes the diaphragm down and holds the pilot valve plug open. Outlet pressure is changed by varying the amount of pilot spring compression.

When steam enters the inlet of the valve, it also enters

the pilot supply line and ows through the open pilot

valve to the top of the main diaphragm. The force created by this steam pressure on the diaphragm overcomes the force of the main valve spring opening

the valve plug and allowing steam to ow downstream.

Downstream pressure registers under the main diaphragm through the control line and tends to balance the diaphragm. Steam from the downstream system also registers under the pilot diaphragm through line. Pressure forces the diaphragm upward, permitting the pilot valve plug to move toward the closed position. Flow of steam to the top of the main diaphragm is thereby reduced and the pressure on main diaphragm drops due to the bleed through the

orice. The main valve moves toward the closed position, allowing only enough steam ow to satisfy

downstream requirements.

When steam demand increases, the downstream pressure decreases below the setting of the pilot

spring. The pilot opens to increase the pressure on the main diaphragm. The main valve opens to increase

the ow downstream. Conversely, if the steam demand

decreases, the downstream pressure increases and the pilot reacts to decrease the pressure on top of the main diaphragm. The main valve throttles toward

the closed position and the steam ow decreases.

Thus, through the combination of pilot and main valve operation, control of the downstream steam pressure is maintained.

A check valve is included in all Type 92B pilots to limit

di󰀨erential pressure on the main valve diaphragm.

In the event of a large decrease in downstream pressure, the check valve opens to relieve diaphragm loading pressure to the downstream system. The check valve cartridge assembly has a factory setting

to limit di󰀨erential pressure across the diaphragm

to approximately 40 psid / 2.8 bar d. If diaphragm

di󰀨erential pressure exceeds 40 psid / 2.8 bar d,

the check valve opens to relieve diaphragm loading pressure into the downstream system, thereby

preventing a high di󰀨erential across the diaphragm

which might otherwise cause diaphragm damage. The check valve closes and normal operation resumes

when the di󰀨erential pressure across the diaphragm is

reduced to the proper level.

Type 92B

Table 3. Maximum Inlet Pressures and Temperatures

BODY MATERIAL END CONNECTION

NPT 250 17.2 406 208

Cast Iron

Steel

Stainless steel

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

PN 16/25/40 (NPS 1, 1-1/2, 2 and 3 /

(NPS 3 and 4 / DN 80 and 100)

CL125 FF 125 8.6 353 178

CL250 RF 250 17.2 406 208

NPT 300 20.7 450 232

SWE 300 20.7 450 232

CL150 RF 185 12.8 450 232

CL300 RF 300 20.7 600 316

DN 25, 40, 50 and 80)

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

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

NPT 300 20.7 450 232

CL150 RF 175 12.1 450 232

CL300 RF 300 20.7 600 316

DN 25, 40, 50 and 80)

PN 16

PN 25/40

MAXIMUM INLET PRESSURE MAXIMUM TEMPERATURE

psig bar °F °C

(1)

300 20.7 600 316

175 12.1 450 232

300 20.7 600 316

(1)

Type 6492HM Safety Override System

Refer to Figure 3. Once placed in operation, the upstream Type 92B (B) pilot senses the intermediate pressure between both valves, and the Type 6492HM (A) pilot senses downstream pressure of the second

valve. As demand for ow increases, intermediate

pressure will fall causing the Type 92B pilot to open. As the Type 92B pilot opens, loading pressure to the main valve increases, opening the main valve.

The Type 6492HM (A) safety override pilot remains open because its setpoint is above the setpoint of the downstream valve. In the unlikely event that the downstream valve fails open, downstream pressure will rise above the downstream valve’s setpoint. This pressure is sensed by the Type 6492HM (A) safety override pilot. As downstream pressure increases the Type 6492HM (A) safety override pilot closes, reducing loading pressure to the upstream main valve, which positions the main valve to maintain desired downstream override pressure.

In the event that the upstream valve fails, the downstream valve will prevent downstream pressure from rising above safe operating levels.

It is recommended to install some type of warning system, such as a sentinal relief valve, to warn the operator that a valve has failed in the system. This will prevent prolonged operation with one valve, which could cause valve trim wear and noise associated with

operation at high di󰀨erential pressures.

Installation

WARNING

Regulators should be installed, operated and maintained in accordance with federal, state and local codes, rules and regulations and Emerson instructions. If the regulator vents steam 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.

Call a service man in case of trouble.

Only a qualied person must install or

service the regulator.

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.

The following points should be kept in mind when installing this pressure reducing valve. See Figure 4 for a schematic drawing of a typical installation.

TYPE 92B PILOT (B) TYPE 92B PILOT (C)

TYPE 6492HM SAFETY

OVERRIDE PILOT (A)

E0794

Type 92B

TYPE 92B MAIN VALVE TYPE 92B MAIN VALVE

INLET PRESSURE

OUTLET PRESSURE

ATMOSPHERIC PRESSURE

LOADING PRESSURE

INTERMEDIATE PRESSURE

Figure 3. Safety Override System Schematic

Table 4. Minimum Dierential Pressures for Safety Override System

TYPE

6492HM

6492HTM

SPRING RANGE

psig bar

10 to 30 0.69 to 2.1 Yellow 10 / 0.69 over normal downstream pressure

25 to 75 1.7 to 5.17 Green 10 / 0.69 over normal downstream pressure

70 to 150 4.8 to 10.3 Red 15 / 1.0 over normal downstream pressure

15 to 100 1.0 to 6.9 Unpainted 10 / 0.69 over normal downstream pressure

80 to 250 5.5 to 17.2 Unpainted 25 / 1.7 over normal downstream pressure

1. Inspect the Type 92B for any shipment damage. Remove any foreign materials that may have collected in the valve during shipment.

2. Blow down the pipeline as required.

3. Install a strainer ahead of the Type 92B to protect the internal parts of the valve.

4. Install an upstream block valve ahead of the Type 92B and a downstream block valve, if required, so that the valve can be isolated and serviced. If continuous operation is necessary during maintenance or inspection, install bypass piping and valve around the Type 92B.

SPRING COLOR

MINIMUM PRESSURE AT WHICH MONITORING

PILOT CAN BE SET, psig / bar

5. This Type 92B is intended to be installed with the diaphragm case above the pipeline so that condensate will not collect in the case.

6. Install the Type 92B in the pipeline so that the ow

will be in the direction indicated by the arrow cast on the body. Follow normal piping procedures when

installing the screwed or anged control valve.

7. Install the external control line as follows:

a. Connect one end of the control line to the

Type 92B body tapping. This tapping is 1/4 NPT for NPS 1 and 2 / DN 25 and 40 bodies, 3/8 NPT for NPS 2 / DN 50 body and 1/2 NPT for NPS 3 and 4 / DN 80 and 100 bodies.

Type 92B

BLOCK VALVE

E0706

INITIAL PRESSURE GAUGE

BLOCK VALVE

TRAP

BLOCK VALVE

BLOCK VALV E

STRAINER

TYPE 92B

TYPE 92B SINGLE-STAGE INSTALLATION

SENSING LINE

STRAINER

TYPE 92B

SENSING LINE

REDUCED PRESSURE

SENSING LINE

GAUGE

REDUCED PRESSURE GAUGE

BLOCK VALV E

REDUCED PRESSURE GAUGE

BLOCK VALVE

E0707

INITIAL PRESSURE GAUGE

E0708

BLOCK VALVE

BLOCK VALV E

TRAP

STRAINER

TRAP

STRAINER

TYPE 92B

TYPE 92B SINGLE-STAGE PARALLEL INSTALLATION

BLOCK VALVE

INTERMEDIATE PRESSURE GAUGE

TRAP

PRIMARY TYPE 92B

SENSING LINE

BLOCK VALV E

TYPE 92B TWO-STAGE INSTALLATION

Figure 4. Type 92B Typical Installations

BLOCK VALV E

SECONDARY TYPE 92B

TRAP

SENSING LINE

BLOCK VALV E

REDUCED PRESSURE GAUGE

Type 92B

TYPE 6492HM SAFETY

OVERRIDE PILOT

TYPE 92B MAIN VALVE

TYPE 6492HM SAFETY

OVERRIDE PILOT

TYPE 92B MAIN VALVE

TYPE 92B PILOT

Figure 5. Safety Override System Installation

TYPE 92B MAIN VALVE

TYPE 92B PILOT

TOP VIEW

TYPE 92B MAIN VALVE

TYPE 92B PILOT

SIDE VIEW

Note

The control line should be as large as the tapped hole in the Type 92B.

b. The other end of the control line is connected to

the downstream system. Place the tapped hole for this connection in a straight run of pipe 3 to 5 ft / 0.91 to 1.52 m from the control valve when the valve body is the same size as the pipeline. If the valve body is smaller than the pipeline and requires swage nipples, place the tapped hole at a distance from the swage connection equal to 10 times the pipe diameter.

c. Do not locate the control line tap in an elbow,

swage or other changes in conguration of the

pipeline where turbulence or abnormal velocities may occur.

d. Do not locate the control line tap in a vessel (such

as a deaerator) located immediately downstream of the control valve. Locate the tap in the pipeline leading to the vessel.

e. Slope the control line away from the Type 92B so

that condensate can drain back into the pipeline.

f. Install a shuto󰀨 valve (not a needle valve) in the

control line.

g. Install a pressure gauge in the control line or near

the outlet of the Type 92B to aid in setting the outlet pressure.

CAUTION

The maximum inlet and outlet pressures for which this Type 92B has been manufactured should not be exceeded. These pressures are stamped on the nameplates attached to the main valve and pilot.

Startup and Adjustment

WARNING

Failure to remove accumulated condensate may result in severe condensation induced water hammer which can result in personal injury or death.

Type 92B

Prior to valve startup:

New Installations

Blow down inlet steam piping to remove any debris such as weld beads by opening the drain valve of the inlet strainer to the control valve. Close the isolation valve and disassemble strainer to remove accumulate debris. Repeat as necessary until strainer basket is free of debris.

Old Installations

Open all upstream and downstream drain valves at drip legs and strainers to drain condensate that may have accumulated during the shutdown period. Crack the inlet isolation valve to the pressure reducing

stations to ush any residual condensate. Close the

drain valves once the drain is free of condensate.

Pilot Adjustment

Loosen hex nut on screw before adjustment. To adjust the downstream reduced pressure setting, turn the set screw clockwise into the spring case to increase the downstream pressure setting. Turn it counterclockwise out of the spring case to decrease the setting. Tighten it once adjustment is made.

1. Remove all pilot control spring compression from the Type 6492HM safety override pilot by turning the adjusting screw out of the spring case (counterclockwise).

2. Adjust the Type 92B upstream working pilot’s and

Type 92B downstream working pilot’s adjusting screws into the spring case (clockwise) to their maximum adjustment.

3. Slowly open the upstream block valve to introduce inlet pressure to the system.

4. Open the downstream block valve and control line block valves, if used.

Note

Some ow is needed to make pressure

settings accurate.

5. If a bypass is used, slowly close the bypass line block valve.

6. Adjust the Type 6492HM safety override pilot to

the desired downstream override pressure. The safety override pilot’s setpoint must be higher than the downstream working pilot’s setpoint by the amounts listed in Table 4.

Type 92B

To put the valve into operation after installation or after disassembly for inspection or repairs, proceed as follows, referring to Figures 4, 9 and 10 as necessary.

1. Relieve all spring compression on the pilot spring by loosening hex nut (key 16) and turning set screw (key 15) counterclockwise (out of the spring case).

2. Open the upstream block valve.

3. Open the downstream block valve slowly.

4. Close the bypass valve.

5. Slowly turn the set screw of the pilot clockwise

into the spring case until the downstream pressure reaches the required setting. Tighten hex nut on the set screw.

Safety Override System

Use the following procedure to put the system into operation, referring to Figure 3 as necessary:

Note

The normal pressure and maximum override pressure should be set at or below the safe working pressure of the equipment and piping system downstream. (Reference applicable

codes and/or standards for maximum

allowable or safe working pressures for equipment and piping systems served.)

7. Adjust the Type 92B downstream working pilot to the desired normal downstream control pressure.

8. Adjust the Type 92B upstream working pilot to the desired intermediate control pressure (typically 50% of inlet pressure).

9. Readjust the Type 92B downstream working pilot to

the desired normal downstream control pressure, if necessary.

10. Tighten the lock nuts on all pilots to lock the

adjusting screws in position.

Type 92B

Shutdown

To take the regulator out of operation:

1. If a bypass line is used, slowly open the bypass line block valve while monitoring the downstream pressure.

2. Close the control line shuto󰀨 valve.

3. Close the downstream block valve.

4. Close the upstream block valve.

5. If a pressure-loaded or on-o󰀨 pilot is used, close

the needle valve to the pilot.

6. Vent the regulator and control line to release any trapped pressure.

Troubleshooting

Operating di󰀩culties may be experienced with this

valve as a result of improper installation, improper valve sizing, damage to internal parts, trim wear or an accumulation of dirt, boiler compound or other foreign materials on internal parts. When trouble occurs, check the following:

a Type MR95H in the Type 92B pilot supply line. Adjust the pilot supply line regulator to reduce pilot supply pressure to about 30 psig / 2.1 bar above the outlet pressure setting of the Type 92B valve. This arrangement can minimize cycling and still provide adequate pilot supply pressure to ensure full opening of the main valve plug, if required.

Note

The 30 psig / 2.1 bar is suggested for

units which include the standard 17-7 PH stainless steel main spring. This spring

requires approximately 20 psig / 1.4 bar diaphragm di󰀨erential pressure to fully

stroke the main valve. If the lighter rate Inconel

10 psig / 0.69 bar diaphragm di󰀨erential

pressure is required to fully stroke the unit. Therefore, the pilot supply pressure can be

reduced to about 20 psig / 1.4 bar above

the outlet pressure setting of the control valve without loss of control capability.

spring is used, only about

Maintenance

Type 92B

Build-up of Downstream Pressure

1. Check for plugged bleed tting (key 61, Figure 8).

2. Check the screen (key 77, Figure 9 or 10) for clogging and the other pilot internal parts for accumulation of dirt, boiler compound or other materials.

Failure to Maintain Downstream Pressure

1. Check for ruptured diaphragm (key 60, Figure 8).

2. Check to see that the valve is not undersized.

Cycling or Hunting

Check to see that the valve is not oversized. A cycling Type 92B might possibly control the downstream pressure within acceptable limits but the life of the diaphragms, guide bushings, seat ring and valve plug could be greatly reduced.

If cycling occurs, as a result of oversizing or other causes, it can frequently be minimized by reducing the gain of the Type 92B. This can be accomplished by installing a suitable reducing regulator such as

CAUTION

Before disassembly or removing the control valve from the line, isolate it from the pressure system and release all the pressure from the control valve.

Due to normal wear, parts must be periodically inspected and replaced if necessary. The frequency of inspection depends on the severity of the service.

Main Valve Disassembly

Type 92B

Key numbers listed are shown on the body assembly drawing, Figure 8.

1. Remove all tubing.

2. Mark the outside edge of the body and diaphragm

case anges with assembly marks to ensure proper

assembly. Remove bolts from diaphragm case and

lift o󰀨 the case. On cast iron body sizes NPS 1-1/2 through 4 / DN 40 to 100, rst remove the loading tubing compression coupling tting from the

pipe nipple.

Inconel® is a trademark owned by Special Metals Corporation.

Type 92B

3. Take out the diaphragm assembly which consists of

two metal diaphragms (key 60), bleed tting (key 61)

and diaphragm plate (key 59). Separate these

parts by unscrewing the bleed tting from the

diaphragm plate.

4. Remove cap screws from bottom ange (key 52).

Take o󰀨 bottom ange. The valve plug (key 56) and

spring (key 57) will drop out.

5. If the seat ring (key 58) shows signs of wear, lap the seat ring to remove imperfections.

Pilot Disassembly

Type 92B Pilot Only

Key numbers listed are shown on the appropriate pilot assembly drawing, Figure 9, 10, 11 or 12.

1. Remove pilot from main valve by unscrewing it from

the mounting nipple or unscrewing the nipple from main valve.

2. Relieve the spring compression by turning the set

screw (key 15) counterclockwise after loosening hex nut (key 16).

3. Remove the casing cap screws. Take o󰀨 the spring

case, and remove upper spring seat, spring, lower spring seat, two diaphragms and the diaphragm gasket. Note that in a low-pressure pilot (Figure 9), the lower spring seat and the diaphragm plate are both parts of the diaphragm plate assembly (key 24) and are pinned together.

4. Unscrew the bellows retainer (key 8) from the pilot body. Take out the bellows and the valve stem (keys 9 and 7).

5. Unscrew the valve plug guide (key 2). The valve plug

(key 4), the valve plug spring (key 3) and the strainer screen (key 77) will come out with the guide.

6. Unscrew the orice (key 5), if necessary.

Main Valve Reassembly

Type 92B (Figure 8)

Inspect all internal parts for excessive wear or damage. Use new parts when necessary (see Table 5 for torque values). Reassemble the main valve as follows:

1. Install valve plug (key 56) and its spring (key 57).

2. Use new bottom ange gasket (key 54) and replace the bottom ange (key 52). Lubricate and replace cap

screws (key 55) (see Table 5 for torque values).

3. Make up the diaphragm assembly by lubricating

and then screwing the bleed tting (key 61) into the

diaphragm plate (key 59) (see Table 5 for torque values) and clamping the diaphragm (key 60) in place.

4. Apply a thin layer of anti-seize lubricant onto the sealing surfaces of the diaphragm casing (key 62) and the body (key 51) prior to installing the diaphragm assembly. Place the diaphragm assembly on the body and replace the diaphragm case (key 62). Make sure assembly marks line up. Lubricate and replace cap screws and nuts (keys 63 and 64) (see Table 5 for proper torque values). On cast iron bodies, install the loading

tubing compression coupling tting on the pipe

nipple (NPS 1-1/2 through 4 / DN 40 through 100).

5. Reconnect all tubing after the pilot is mounted.

Type 92B Pilot Reassembly

(Figure 9 or 10)

Inspect all internal parts for excessive wear or damage. Use new parts wherever necessary. Reassemble the pilot as follows (see Table 6 for torque values):

1. Apply high temperature thread sealant to the orice threads. Screw in the orice (key 5) (see Table 6 for

torque values).

7. Remove the check valve assembly (key 75) with a screwdriver after having removed the pipe plug (key 74). Be sure the check valve is not clogged. Replace the entire check valve assembly, if necessary. The check valve assembly should not be

disassembled in the eld, because its setting is made

at the factory and will be lost by disassembling.

2. Place valve plug spring (key 3), the valve plug (key 4), and the strainer screen (key 77) in the valve plug guide (key 2). Apply high temperature thread sealant to the plug guide threads Screw guide into body (key 1) (see Table 6 for torque values).

3. Place valve stem (key 7) in the body, smaller

diameter first.

Type 92B

PIPE PLUG OR TUBE FITTING – DIRECTLY OVER ORIFICE FOR EASE OF ACCESSIBILITY

BLEED ORIFICE – EASILY CLEANED WITH WIRE

VALVE BODY

VALVE PLUG AND SEAT RING

REDUCING VALVE SPRING

BOTTOM FLANGE

DIAPHRAGMS AND DIAPHRAGM PLATE

DIAPHRAGM CASE

GUIDE BUSHING

PILOT VALVE SPRING

PILOT SPRING CASE

PILOT PRESSURE SETTING SPRING

BELLOWS AND BELLOWS RETAINER

LOWER SPRING SEAT

ORIFICE

CHECK VALVE ASSEMBLY

PILOT VALVE STEM AND PLUG

VALVE STEM GUIDE

W1322-3A

Figure 6. Typical Type 92B Construction

4. Apply high temperature thread sealant to bellows retainer threads. Place bellows (key 9) in body and secure in place by installing the bellows retainer (key 8) (see Table 6 for torque values).

5. Use new diaphragm gasket (key 18) and put two

diaphragms (key 10) in place on the body with raised, preformed centers toward spring case.

6. Stack the lower spring seat (key 11), spring (key 12),

and upper spring seat (key 13) on the diaphragm and install the spring case. Note that on the low-pressure pilot, the lower spring seat and diaphragm plate are part of a subassembly.

7. Lubricate and replace casing cap screws (key 17).

8. Mount pilot on main valve and install all tubing.

To Clean Pilot Strainer Assembly

Remove the valve plug guide (key 2). The valve plug (key 4), the valve plug spring (key 3) and the strainer screen (key 77) will come out with the guide. Inspect and clean or replace as required. Key numbers are referenced in Figure 9 or 10.

To Clean Bleed Fitting

If the 5/64 in. / 2.0 mm diameter hole in the bleed

tting (key 61) becomes plugged, it can be cleared by

running a wire through it. To gain access to this hole,

rst isolate the valve and relieve all pressure. Then remove either the tubing and tting or the pipe plug

from the top of the diaphragm case. Clear the hole,

replace the case tting and resume normal operation.

Key numbers are referenced in Figure 8.

Type 92B

SET SCREW

JAM NUT

SCREWS (8)

SPRING CASE

UPPER SPRING SEAT

SPRING

LOWER SPRING SEAT

DIAPHRAGMS (2)

DIAPHRAGM GASKET

BELLOWS RETAINER

BELLOWS

VALVE STEM

VALVE BODY

PIPE PLUG

CHECK VALVE ASSEMBLY

ORIFICE

VALVE PLUG

VALVE PLUG SPRING

STRAINER SCREEN

VALVE PLUG GUIDE

W0070_2_1A

Figure 7. Type 92B High Pressure Pilot Exploded View

Types 6492HM and 6492HTM Pilots

These procedures are to be performed if inspecting, cleaning or replacing any pilot parts or of cycling, erratic control or too high or too low an outlet (control) pressure is noted. Perform only those procedures in this section required to correct the problem. Key numbers are referenced in Figure 15.

Note

1. Unscrew the valve guide (key 2). Remove the screen (key 77), inner valve (key 4), valve spring

(key 3) and stem (key 7). Unscrew the orice (key 5). Examine the orice and plug seating

surfaces for damage.

2. Clean and replace parts as necessary. Apply high

temperature sealant to the orice threads. Thread

the seat ring into place and tighten using 19 to 25 ft-lbs / 26 to 34 N•m of torque.

3. Handle the parts carefully, and place the valve spring (key 3) in the valve guide (key 2). Slide the inner valve (key 4) over the spring and into the valve guide. Place the screen (key 77) onto the valve guide. Place the stem (key 7) in the center hole of the valve guide. Apply sealant to the valve guide threads, and screw the guide plus attached parts into the body (key 1).

4. Remove the pipe plug (key 74). Then remove the pipe plug (key 94). Clean and replace the pipe plugs as necessary.

5. Apply high temperature sealant to the threads of

the pipe plug (key 94) and install into the body (key 1).

6. Apply high temperature sealant to the threads of

the pipe plug (key 74). Install into the body (key 1).

7. Remove the cap screws (key 17), spring case (key 14), control spring (key 12) and upper spring seat (key 13) from the body (key 1).

8. Remove the lower spring seat (key 11), diaphragms (key 10) and diaphragm gasket (key 18) from the body. Inspect and clean the diaphragm gasket. Replace if necessary.

9. Unscrew the bellows retainer (key 8) and remove the bellows (key 9). Replace worn parts as necessary. Apply high temperature sealant to the bellow retainer threads. Install the bellows and bellows retainer. Tighten the bellows retainer using 19 to 25 ft-lbs / 26 to 34 N•m of torque.

10. Install the diaphragm gasket. Install both diaphragms with their raised performed centers facing toward the spring case.

Before performing any maintenance, loosen the hex nut (key 16), if used,

and turn the set screw (key 15)

counterclockwise until all compression is removed from the control spring (key 12). Remove the pilot from the pipe nipple and connectors.

11. Lubricate the upper spring seat and the exposed threads of the adjusting screw. Install the lower spring seat (key 11), control spring (key 12), upper spring seat (key 13) and spring case (key 14). Insert and tighten the cap screws (key 17) in a crisscross bolting pattern using 12 to 18 ft-lbs / 16 to 24 N•m of torque.

BODY MATERIAL

Cast Iron

Steel,

Stainless steel

Type 92B

Table 5. Type 92B Main Valve Torques

BODY SIZE

NPS DN Ft-lbs N•m Ft-lbs N•m Ft-lbs N•m

1 25 23 to 29 30 to 39 50 to 70 68 to 95 24 to 30 32.5 to 40.6

1 to 1/2 40 38 to 46 51.5 to 62 80 to 100 108 to 136 46 to 58 62 to 78.6

2 50 38 to 46 51.5 to 62 95 to 110 129 to 149 46 to 58 62 to 78.6

3 80 90 to 120 122 to 163 110 to 130 149 to 176 60 to 75 81.3 to 102

4 100 100 to 140 136 to 190 110 to 130 149 to 176 155 to 190 210 to 258

1 25 23 to 29 30 to 39 50 to 70 68 to 95 24 to 30 32.5 to 40.6

1 to 1/2 40 38 to 46 51.5 to 62 80 to 100 108 to 136 46 to 58 62 to 78.6

2 50 38 to 46 51.5 to 62 95 to 110 129 to 149 46 to 58 62 to 78.6

3 80 90 to 120 122 to 163 110 to 130 149 to 176 60 to 75 81.3 to 102

4 100 100 to 140 136 to 190 110 to 130 149 to 176 155 to 190 210 to 258

BLEED FITTING

(KEY 61)

Table 6. Type 92B Pilot Torques

DIAPHRAGM CASE CAP

SCREWS/HEX NUTS

(KEY 63/64)

BOTTOM FLANGE CAP

SCREWS (KEY 55)

VALVE GUIDE

(KEY 2)

Ft-lbs N•m Ft-lbs N•m Ft-lbs N•m Ft-lbs N•m Ft-lbs N•m Ft-lbs N•m

42 to 58 57 to 78.6 19 to 25 25.8 to 34 19 to 25 25.8 to 34 5 to 15 7 to 20.3 19 to 25 25.8 to 34 12 to 18 16.3 to 24.4

Parts Ordering

Each Type 92B valve is assigned an FS or serial number. It can be found stamped on the nameplate attached to the spring case of the pilot.

Refer to the FS or serial number and the complete part number when ordering spare parts or requesting

technical advice from your local Sales O󰀩ce.

Parts List

Type 92B Main Valve (Figure 8)

Key Description Part Number

Parts Kits (includes keys: 54, 56 and 60) Cast Iron NPS 1 / DN 25 R92BX000022 NPS 1-1/2 / DN 40 R92BX000032 NPS 2 / DN 50 R92BX000042 NPS 3 / DN 80 R92BX000062 NPS 4 / DN 100 R92BX000072 Steel or Stainless steel NPS 1 / DN 25 R92BX000092 NPS 1-1/2 / DN 40 R92BX000102 NPS 2 / DN 50 R92BX000112 NPS 3 / DN 80 R92BX000062 NPS 4 / DN 100 R92BX000122

ORIFICE

(KEY 5)

BELLOWS RETAINER

(KEY 8)

CHECK VALVE

ASSEMBLY (KEY 75)

Key Description Part Number

19 Drive Screw, Stainless steel Cast Iron Body (5 required) 1A368228982 Steel Body (3 required) 1A368228982 20 Warning Label (Cast Iron body only) 1F137018992 21 Nameplate - - - - - - - - - - 51 Valve Body Assembly (includes body with seat ring - key 58 and guide bushing) Cast Iron NPT 1 NPT 3H5846000B2 1-1/2 NPT 3H2748000B2 2 NPT 3F2497000B2

CL125 FF anged

NPS 1-1/2 / DN 40 3H2750000A2 NPS 2 / DN 50 3F2498000B2 NPS 3 / DN 80 3H3064000A2 NPS 4 / DN 100 3H3146000A2

CL250 RF anged

NPS 1-1/2 / DN 40 3H2751000A2 NPS 2 / DN 50 3F2499000B2 NPS 3 / DN 80 3H3065000A2 NPS 4 / DN 100 3H3147000A2 Steel NPT 1 NPT T20895X0012 1-1/2 NPT T20895X0042 2 NPT T20895X0072 SWE 1 SWE 30C3810X012 1-1/2 SWE 30C3810X022 2 SWE GG01694X012

PIPE PLUG

(KEY 74)

CAP SCREWS

(KEY 17)

- continued -

Type 92B

51 Valve Body Assembly (continued)

CL150 RF anged

NPS 1 / DN 25 T20895X0022 NPS 1-1/2 / DN 40 T20895X0052 NPS 2 / DN 50 T20895X0082 NPS 3 / DN 80 T20895X0102 NPS 4 / DN 100 T20895X0122

CL300 RF anged

NPS 1 / DN 25 T20895X0032 NPS 1-1/2 / DN 40 T20895X0062 NPS 2 / DN 50 T20895X0092 NPS 3 / DN 80 T20895X0112 NPS 4 / DN 100 T20895X0132 PN16/25/40 RF NPS 1 / DN 25 T21162X0012 NPS 1-1/2 / DN 40 T21162X0022 NPS 2 / DN 50 T21162X0032 NPS 3 / DN 80 T21162X0052 PN16 RF NPS 4 / DN 100 T21162X0042 PN25/40 RF NPS 4 / DN 100 GG01701X012 Stainless steel NPT 1 NPT T21160X0012 1-1/2 NPT T21160X0042 2 NPT T21160X0072

CL150 RF anged

NPS 1 / DN 25 T21160X0022 NPS 1-1/2 / DN 40 T21160X0052 NPS 2 / DN 50 T21160X0082 NPS 3 / DN 80 T21160X0102 NPS 4 / DN 100 T21160X0122

CL300 RF anged

NPS 1 / DN 25 T21160X0032 NPS 1-1/2 / DN 40 T21160X0062 NPS 2 / DN 50 T21160X0092 NPS 3 / DN 80 T21160X0112 NPS 4 / DN 100 T21160X0132 52 Bottom Flange Assembly Cast iron NPS 1 / DN 25 1J3024000A2 NPS 1-1/2 / DN 40 1J3026000A2 NPS 2 / DN 50 1J4339000A2 NPS 3 / DN 80 0U0357000A2 NPS 4 / DN 100 0T0786000A2 Steel NPS 1 / DN 25 29B468600A2 NPS 1-1/2 / DN 40 39B551300A2 NPS 2 / DN 50 39B045200A2 NPS 3 / DN 80 39B581200A2 NPS 4 / DN 100 39B642300A2 Stainless steel NPS 1 / DN 25 29B468600B2 NPS 1-1/2 / DN 40 39B551300B2 NPS 2 / DN 50 39B045200B2 NPS 3 / DN 80 39B581200B2 NPS 4 / DN 100 39B642300B2 54* Gasket Cast Iron Body, Composition NPS 1 / DN 25 0U020004022 NPS 1-1/2 / DN 40 0U024704022 NPS 2 / DN 50 0T068104022 NPS 3 / DN 80 0U0365X0032 NPS 4 / DN 100 0T078804022 Steel and Stainless steel Body, Graphite NPS 1 / DN 25 0U0200X0012 NPS 1-1/2 / DN 40 0U0247X0012

Key Description Part NumberKey Description Part Number

54* Gasket (continued) Steel and Stainless steel Body, Graphite NPS 2 / DN 50 0T0681X0012 NPS 3 / DN 80 0U0365X0032 NPS 4 / DN 100 0T0788X0012 55 Cap Screw, For Cast Iron and Steel Bodies NPS 1 / DN 25 (6 required) 1A336924052 NPS 1-1/2 / DN 40 (6 required) 1A337524052 NPS 2 / DN 50 (6 required) 1A418524052 NPS 3 / DN 80 (8 required) 1A344424052 NPS 4 / DN 100 (8 required) 1A430224052 Cap Screw, For Stainless steel Bodies NPS 1 / DN 25 (6 required) 1A3369X0032 NPS 1-1/2 / DN 40 (6 required) 1A3375X0022 NPS 2 / DN 50 (6 required) 1A4185X0022 NPS 3 / DN 80 (8 required) 1A3444X0012 NPS 4 / DN 100 (8 required) 1A4302K0022 56 Valve Plug, Stainless steel NPS 1 / DN 25 2P979646172 NPS 1-1/2 / DN 40 2P979746172 NPS 2 / DN 50 2P979846172 NPS 3 / DN 80 39B4698X012 NPS 4 / DN 100 39B4699X012 57 Spring 17-7 PH Stainless Steel Standard for 20 psi / 1.4 bar pressure drop or greater NPS 1 / DN 25 1R151337052 NPS 1-1/2 / DN 40 1R151437052 NPS 2 / DN 50 1R151537052 NPS 3 / DN 80 1R151737052 NPS 4 / DN 100 1R151837052 Inconel 10 to 20 psi / 0.69 to 1.4 bar minimum pressure drop NPS 1 / DN 25 0U020242012 NPS 1-1/2 / DN 40 0U023742012 NPS 2 / DN 50 0T086042012 NPS 3 / DN 80 0U035942012 NPS 4 / DN 100 0T085842012 58 Seat Ring, Stainless steel NPS 1 / DN 25 2P980346172 NPS 1-1/2 / DN 40 2P980446172 NPS 2 / DN 50 2P896746192 NPS 3 / DN 80 2P898046192 NPS 4 / DN 100 2P980546192 59 Diaphragm Head Cast Iron Body, Cast Iron NPS 1 / DN 25 1F251519012 NPS 1-1/2 / DN 40 1F301019012 NPS 2 / DN 50 1F250419012 NPS 3 / DN 80 GG02112X012 NPS 4 / DN 100 1F335619012 Steel Body, WCC Steel NPS 1 / DN 25 19B4685X012 NPS 1-1/2 / DN 40 19B5514X012 NPS 2 / DN 50 29B0453X012 NPS 3 / DN 80 29B5811X012 NPS 4 / DN 100 29B6425X012 Stainless steel Body, CF8M Steel NPS 1 / DN 25 19B4685X022 NPS 1-1/2 / DN 40 19B5514X022 NPS 2 / DN 50 29B0453X022 NPS 3 / DN 80 29B5811X022 NPS 4 / DN 100 29B6425X022

- continued -

*Recommended spare part Inconel® is a trademark owned by Special Metals Corporation.

Type 92B

Type 92B Main Valve (Figure 8) (continued)

Key Description Part Number

60* Diaphragm, 302 Stainless steel (2 required) NPS 1 / DN 25 1F251436012 NPS 1-1/2 / DN 40 1F301236012 NPS 2 / DN 50 1F250336012 NPS 3 / DN 80 1F324936012 NPS 4 / DN 100 1F335736012 61 Bleed Fitting, 416 Stainless Steel NPS 1 / DN 25 1F251335132 NPS 1-1/2 and 2 / DN 40 and 50 1F250235132 NPS 3 / DN 80 1F325035132 NPS 4 / DN 100 1F335835132 Cast Iron or Steel 1F335836012 62 Diaphragm Case Cast Iron Body, Cast Iron NPS 1 / DN 25 2L547219012 NPS 1-1/2 / DN 40 2L586319012 NPS 2 / DN 50 2L586619022 NPS 3 / DN 80 2L587219022 NPS 4 / DN 100 2F336019022 Steel Body, WCC Steel NPS 1 / DN 25 39B4682X012 NPS 1-1/2 / DN 40 39B4700X012 NPS 2 / DN 50 39B4681X012 NPS 3 / DN 80 39B5813X012 NPS 4 / DN 100 49B6421X012 Stainless Steel Body, CF8M Steel NPS 1 / DN 25 39B4682X022 NPS 1-1/2 / DN 40 39B4700X022 NPS 2 / DN 50 39B4681X022 NPS 3 / DN 80 39B5813X022 NPS 4 / DN 100 49B6421X022 63 Cap Screw, For Cast Iron and Steel Bodies 12 required NPS 1 / DN 25 1A413024052 NPS 1-1/2 and 2 / DN 40 and 50 1A417524052 16 required NPS 3 and 4 / DN 80 and 100 1A427824052 Cap Screw, For Stainless Steel Bodies 12 required NPS 1 / DN 25 1A4130X0022 NPS 1-1/2 and 2 / DN 40 and 50 1A4175X0022 16 required NPS 3 and 4 / DN 80 and 100 1A4278X0022 64 Hex Nut, For Cast Iron and Steel Bodies 12 required NPS 1 / DN 25 1A413224122 NPS 1-1/2 and 2 / DN 40 and 50 1A417624122 16 required NPS 3 and 4 / DN 80 and 100 1A420124122 Hex Nut, For Stainless Steel Bodies 12 required NPS 1 / DN 25 1A413235252 NPS 1-1/2 and 2 / DN 40 and 50 1A4176X0022 16 required NPS 3 and 4 / DN 80 and 100 1A4201X0012 69 Pipe Plug Steel 1A369224492 Stainless steel 1A369235072

Type 92B Pilot (Figures 9, 10, 11 and 12)

Key Description Part Number

Parts Kits (includes keys: 4, 5, 7, 8, 9, 10, 18 and 77) Low-pressure Pilot Cast iron R92BLPX0012 Steel R92BLPX0022 High-pressure Pilot Cast iron R92BHPX0012 Steel R92BHPX0022 1 Pilot Valve Body Cast Iron Low pressure 32A0404X012 High pressure 22A0403X012 Ductile Iron Low pressure 32A0404X022 High pressure 22A0403X022 Steel Low pressure 32A0404X052 High pressure/High temperature 22A0403X052 Stainless Steel Low pressure 32A0404X062 High pressure/High temperature 22A0403X072 2 Valve Guide Cast Iron, Ductile Iron or Steel, 416 Stainless Steel 1E391835132 Stainless steel, 316 Stainless Steel 1E391835072 3 Valve Spring, 302 Stainless Steel 1E392437022 4* Valve Plug Cast Iron, Ductile Iron or Steel, 416 Stainless Steel 1F967446172 Stainless steel, 316 Stainless Steel 1F9674X0012

5* Orice

Cast Iron, Ductile Iron or Steel, 416 Stainless Steel 1H564446172 Stainless steel, 316 Stainless Steel 1H5644X0012 7 Valve Stem Cast Iron, Ductile Iron or Steel, 416 Stainless Steel 1F967835132 Stainless steel, 316 Stainless Steel 1F9678X0012 8 Bellows Retainer Cast Iron, Ductile Iron or Steel, Brass 1F971214012 Stainless steel, 316 Stainless Steel 1F9712X0012 9 Bellows Cast Iron, Ductile Iron or Steel, Bronze 1F971318992 High Temperature Steel Pilot and Stainless steel, 321 Stainless Steel 1F9713X0012 10* Diaphragm, 302 Stainless Steel (2 required) Low pressure 1E396936012 High pressure/High temperature 1E395836012 11 Lower Spring Seat, Aluminum High pressure 1J9140X0032 High temperature 14B9948X012 12 Spring, Plated Steel Low-pressure pilot 2 to 6 psig / 0.14 to 0.41 bar 1E395627022 5 to 15 psig / 0.34 to 1.0 bar 1D7455T0012 13 to 25 psig / 0.90 to 1.7 bar 1E395727192 High-pressure pilot 15 to 30 psig / 1.0 to 2.1 bar 1E395627022 25 to 75 psig / 1.7 to 5.2 bar 1D7455T0012 70 to 150 psig / 4.8 to 10.3 bar 1E395727192 High temperature pilot 15 to 100 psig / 1.0 to 6.9 bar 14B9943X012 80 to 250 psig / 5.5 to 17.2 bar 14B9942X022

*Recommended spare part

- continued -

Type 92B

Key Description Part Number

13 Upper Spring Seat, Plated Steel Low/High pressure 1D667125072 High temperature 14B9951X012 14 Spring Case Cast Iron or Ductile Iron, Cast Iron Low pressure 3J496319012 High pressure 2J496219012 Steel, WCC Steel Low pressure 3L416122012 High pressure 2L416322012 Stainless Steel, 316 Stainless Steel Low pressure 3L4161X0022 High pressure 2L416333092 15 Set Screw, Plated Steel 1D995448702 16 Hex Nut, Plated Steel 1A353724122 17 Cap Screw Cast Iron, Ductile Iron and Steel, Plated Steel Low pressure (10 required) 1A381624052 High pressure (8 required) 1A381624052 High temperature (8 required) 1A3816X0242 Stainless steel, Stainless steel Low pressure (10 required) 1A3816X0152 High pressure (8 required) 1A3816X0152 High temperature (8 required) 1A381635222 18* Diaphragm Gasket Cast Iron and Ductile Iron Body, Composition Low pressure 1E397004022 High pressure 1E396104022 Steel and Stainless Steel Body, Graphite Low pressure 1E3970X0012 High pressure/High Temperature 1E3961X0012 19 Drive Screw (2 required) 1A368228982 20 Nameplate - - - - - - - - - - 22 Pipe Nipple Cast Iron, Ductile Iron and Steel, Plated Steel Low pressure 1B825226012 High pressure/High temperature 1A473526012 Stainless steel, 316 Stainless Steel Low pressure 1B8252X0012 High pressure/High temperature 1A4735X0012 24 Diaphragm Plate Assembly Low pressure only 1E3967X0012 34 Machine Screw 16A5763X012 74 Pipe Plug Cast Iron, Ductile Iron and Steel, Plated Steel 0Z020128992 Stainless Steel, 316 Stainless Steel 0Z020135072 75 Check Valve Assembly Cast Iron, Ductile Iron and Steel Pilot Body 12A0405X012 Stainless Steel Pilot Body 12A0405X022 77 Screen 16A1512X012

Optional Sealed Adjusting Screw (Figure 12)

Key Description Part Number

For Cast Iron Construction

14 Spring Case Low pressure 3L324222012 High pressure 2L324122012

25 Stu󰀩ng Box 1L324024092

26 Adjusting Screw 1L449735232 27 Packing Follower 1K884924092

28 Stu󰀩ng Box Nut 0P077624102

29 Packing (3 required) 1H784301012

30 Stu󰀩ng Box Gasket 1N499199202

31 Handwheel 1L369644992 32 Female Adaptor 1H784401012 33 Male Adaptor 1H784201012 34 Machine Screw 16A5763X012 35 Spring 1F125437012 36 Packing Washer 1H981836042 37 Lock Washer 1L323928982

For Steel or Stainless Steel Construction

14 Spring Case Steel Construction Only, WCC Steel Low pressure 3L442222012 High pressure 2L442022012 15 Set Screw, Plated Steel 1D995448702 16 Hex Nut, Plated Steel 1A353724122 87 Sealing Washer 1V205699012

Type 92B Pilot Mounting Parts

(Figures 13 and 14)

Key Description Part Number

22 Pipe Nipple (For NPS 1-1/2, 2, 3 and 4 / DN 40, 50, 80 and 100) Cast Iron Construction Only) - - - - - - - - - - 65 Loading Tubing - - - - - - - - - - 66 Pipe Bushing, Plated Steel Plated Steel - - - - - - - - - - Stainless Steel - - - - - - - - - - 67 Pipe Plug, Steel (For NPS 1-1/2, 2, 3 and 4 / DN 40, 50, 80 and 100) Cast Iron Construction Only) - - - - - - - - - - 70 Control Tubing - - - - - - - - - - -

Optional Handwheel (Figure 11)

Key Description Part Number

Handwheel Assembly

15 Set Screw, Plated Steel 1J496428982 16 Hex Nut, Plated Steel (not shown) 1A353724122 34 Machine Screw 16A5763X012 38 Handwheel 1J496144012 39 Lock Washer 1A352332992

*Recommended spare part

- continued -

Type 92B

Type 92B Pilot Mounting Parts

(Figures 13 and 14) (continued)

Key Description Part Number

71 Male Connector Cast Iron Body, Brass - - - - - - - - - - Steel Body NPS 1, 1-1/2 and 2 / DN 25, 40 and 50 (3 required) - - - - - - - - - - NPS 3 and 4 / DN 80 and 100 (2 required) - - - - - - - - - - Stainless Steel Body NPS 1, 1-1/2 and 2 / DN 25, 40 and 50 (3 required) - - - - - - - - - - NPS 3 and 4 / DN 80 and 100 (2 required) - - - - - - - - - - 72 Elbow Cast Iron Body NPS 1 / DN 25 (2 required) - - - - - - - - - - NPS 1-1/2 to 4 / DN 40 to 100 (1 required) - - - - - - - - - - Steel Body NPS 1, 1-1/2 and 2 / DN 25, 40 and 50 (1 required) - - - - - - - - - - NPS 3 and 4 / DN 80 and 100 (2 required) - - - - - - - - - - Stainless steel Body NPS 1, 1-1/2 and 2 / DN 25, 40 and 50 (1 required) - - - - - - - - - - NPS 3 and 4 / DN 80 and 100 (2 required) - - - - - - - - - - 73 Female Connector, Brass (For NPS 1-1/2, 2, 3 and 4 / DN 40, 50, 80 and 100 Cast Iron Construction Only) - - - - - - - - - - -

Types 6492HM and 6492HTM Pilots (Figure 15)

Key Description Part Number

1 Pilot Valve Body Steel 22A0403X052 Stainless steel 22A0403X072 2 Valve Guide Steel 1E391835132 Stainless steel 1E391835072 3 Valve Spring 1E392437022 4 Inner Valve Steel 1F967446172 Stainless steel 1F9674X0012

5 Orice

Steel 1H564446172 Stainless steel 1H5644X0012 7 Valve Stem Steel 1F967835132 Stainless steel 1F9678X0012 8 Bellows Retainer Steel 1F971214012 Stainless steel 1F9712X0012 9 Bellows Steel 1F971318992 Stainless steel 1F9713X0012 10 Diaphragm (2 required) 1E395836012 11 Lower Spring Seat Type 6492HM 1J9140X0032 Type 6492HTM - - - - - - - - - - Steel 1J9140X0022 Stainless steel 14B9948X012

Key Description Part Number

12 Spring Type 6492HM 10 to 30 psig / 0.69 to 2.07 bar 1E395627022 25 to 75 psig / 1.72 to 5.17 bar 1D7455T0012 70 to 150 psig / 4.83 to 10.3 bar 1E395727192 Type 6492HTM 15 to 100 psig / 1.03 to 6.9 bar 14B9943X012 80 to 250 psig / 5.52 to 17.2 bar 14B9942X022 13 Upper Spring Seat Type 6492HM 1D667125072 Type 6492HTM 14B9951X012 14 Spring Case Steel with standard adjusting screw 2L416322012 with sealed adjusting screw 2L442022012 Stainless steel with standard adjusting screw 2L416333092 with sealed adjusting screw 2L4420X0012 15 Set Screw Standard 1D995448702 Handwheel 1J496428982 16 Hex Nut 1A353724122 17 Cap Screw (8 required) Type 6492HM Steel 1A381624052 Stainless steel 1A3816X0152 Type 6492HTM Steel 1A3816X0242 Stainless steel 1A3816X0152 18 Diaphragm Gasket Type 6492HM 1E396104022 Type 6492HTM 1E3961X0012 19 Drive Screw (4 required) 1A368228982 20 Nameplate - - - - - - - - - - 34 Machine Screw for use with Handwheel 16A5763X012 38 Handwheel 1J496144012 39 Lock Washer for use with Handwheel 1A352332992 74 Pipe Plug Steel 0Z020128992 Stainless steel 0Z020135072 77 Screen 16A1512X012 78 Reducing Bushing Steel 1C379026232 Stainless steel 1C3790X0012 87 Sealed Adjusting Screw Sealing Washer 1V205699012 94 Pipe Plug 1E823135042 95 Warning Label (Figure 16) 19B0429X0A2

Type 6492HM Pilot Mounting Parts

(Figure 17)

Key Description Part Number

65 Loading Tubing - - - - - - - - - - 66 Pipe Bushing Steel - - - - - - - - - - Stainless steel - - - - - - - - - - -

Type 92B

30A6348-B1A

30A6348-B2

Figure 8. Type 92B Main Valve Assembly

Type 92B

CJ8998-E

Figure 9. Low-Pressure Pilot Assembly

BF9827-G

Figure 10. High-Pressure Pilot Assembly

Type 92B

1J4965

Figure 11. Optional Handwheel Assembly

32A4712-A A3505-1

STAINLESS STEEL BODY

STEEL AND

Figure 12. Optional Sealed Adjusting Screw

CN7100

CAST IRON BODY

Type 92B

2F2573_L

Figure 13. Cast Iron Pilot Assembly (use for NPS 1-1/2 through 4 / DN 40 through 100 assemblies)

CONTROL TUBING

72 65

39B4689_1

PILOT UP, LEFT SIDE

70 71

Figure 14. Steel Pilot Mounting Assembly (High Pressure Pilot Shown)

LOADING TUBING

Type 92B

39B3357

APPLY LUBRICANT (L) OR SEALANT (S)

0.75 /

E0661

Figure 15. Type 6492HM Pilot Assembly

3.00 /

Figure 16. Safety Override Pilot Warning Label (key 95)

WARNING BACKGROUND

SAFETY ORANGE ANSI Z535.1

In. / mm

Type 92B

Figure 17. Safety Override Pilot Assembly

Type 92B

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Emerson Fisher 92B Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual