Emerson Fisher 92B User manual

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.
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
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.
Figure 1. Type 92B Pressure Reducing Valve
W8264
Instruction Manual
D100703X012
July 2019
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)
See Table 2
Minimum Di󰀨erential Pressure Required for
Full Stroke(1)
20 psig / 1.4 bar with stainless steel
spring; 10 psig / 0.69 bar with Inconel®spring
Pressure Registration
External
Temperature Capabilities(1)
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
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 Steel or
Stainless Steel Body
1 25 NPT NPT, SWE(1),
CL150 RF,
CL300 RF
and PN 16/25/40 RF
1-1/2 and 2 40 and 50
NPT,
CL125 FF and
CL250 RF
3 and 4 80 and 100 CL125 FF
and CL250 RF
CL150 RF, CL300 RF,
PN 16 RF and PN 25/40 RF
1. Available in steel bodies only.
Table 2. Outlet Pressure Ranges
PILOT TYPE OUTLET PRESSURE PART NUMBER COLOR CODE SPRINGWIREDIAMETER SPRING FREE LENGTH
psig bar In. mm In. mm
Low
Pressure
2 to 6
5 to 15
13 to 25
0.14 to 0.41
0.34 to 1.0
0.90 to 1.7
1E395627022
1D7455T0012
1E395727192
Yellow
Green
Red
0.207
0.234
0.283
5.26
5.94
7.19
2.50
2.62
2.44
63.5
66.5
62.0
High
Pressure
15 to 30
25 to 75
70 to 150
1.0 to 2.1
1.7 to 5.2
4.8 to 10.3
1E395627022
1D7455T0012
1E395727192
Yellow
Green
Red
0.207
0.234
0.283
5.26
5.94
7.19
2.50
2.62
2.44
63.5
66.5
62.0
High
Temperature
15 to 100
80 to 250
1.0 to 6.9
5.5 to 17.2
14B9943X012
14B9942X022
Unpainted
Unpainted
0.282
0.375
7.16
9.53
2.50
2.50
63.5
63.5
Inconel®is a trademark owned by Special Metals Corporation.
!
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
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.
2
Type 92B

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.
Figure 2. Type 92B Operational Schematic
E0672_1
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
LOADING PRESSURE
CONTROL LINE
MAIN VALVE
DIAPHRAGM
VALVE PLUG
MAIN VALVE SPRING PILOT SUPPLY LINE
PILOT VALVE
PLUG
PILOT
DIAPHRAGM
PILOT SPRING
PILOT CONTROL LINE
ORIFICE
3
Type 92B

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.
Table 3. Maximum Inlet Pressures and Temperatures
BODY MATERIAL END CONNECTION MAXIMUM INLET PRESSURE MAXIMUM TEMPERATURE
psig bar °F °C
Cast Iron
NPT 250 17.2 406 208
CL125 FF 125 8.6 353 178
CL250 RF 250 17.2 406 208
Steel
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(1)
PN 16/25/40 (NPS 1, 1-1/2, 2 and 3 /
DN 25, 40, 50 and 80) 300 20.7 600 316(1)
PN 16 (NPS 4 / DN 100) 185 12.8 450 232
PN 25/40 (NPS 4 / DN 100) 300 20.7 600 316(1)
Stainless steel
NPT 300 20.7 450 232
CL150 RF 175 12.1 450 232
CL300 RF 300 20.7 600 316(1)
PN 16/25/40 (NPS 1, 1-1/2, 2 and 3 /
DN 25, 40, 50 and 80) 300 20.7 600 316(1)
PN 16
(NPS 3 and 4 / DN 80 and 100) 175 12.1 450 232
PN 25/40
(NPS 3 and 4 / DN 80 and 100) 300 20.7 600 316(1)
1. 450°F / 232°C with standard seat ring, 600°F / 316°C with seal weld option.
4
Type 92B

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.
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.
Table 4. Minimum Dierential Pressures for Safety Override System
TYPE SPRING RANGE SPRING COLOR MINIMUM PRESSURE AT WHICH MONITORING
PILOT CAN BE SET, psig / bar
psig bar
6492HM
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
6492HTM 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
TYPE 92B PILOT (B) TYPE 92B PILOT (C)
TYPE 92B MAIN VALVE TYPE 92B MAIN VALVE
TYPE 6492HM SAFETY
OVERRIDE PILOT (A)
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
LOADING PRESSURE
INTERMEDIATE PRESSURE
E0794
Figure 3. Safety Override System Schematic
5
Type 92B

BLOCK VALVE
INITIAL
PRESSURE
GAUGE
BLOCK VALVE
TRAP STRAINER TYPE 92B
BLOCK VALVE
SENSING LINE
REDUCED
PRESSURE
GAUGE
TYPE 92B SINGLE-STAGE INSTALLATION
E0706
BLOCK VALVE
BLOCK
VALVE STRAINER TYPE 92B
BLOCK
VALVE
SENSING LINE
REDUCED
PRESSURE
GAUGE
INITIAL
PRESSURE
GAUGE BLOCK
VALVE
TRAP STRAINER TYPE 92B
SENSING LINE
REDUCED
PRESSURE
GAUGE
BLOCK
VALVE
TRAP
TYPE 92B SINGLE-STAGE PARALLEL INSTALLATION
E0707
TYPE 92B TWO-STAGE INSTALLATION
E0708
Figure 4. Type 92B Typical Installations
BLOCK VALVE
INITIAL
PRESSURE
GAUGE BLOCK
VALVE
TRAP STRAINER PRIMARY
TYPE 92B
SENSING
LINE
INTERMEDIATE
PRESSURE
GAUGE
BLOCK
VALVE
TRAP
SECONDARY
TYPE 92B
BLOCK
VALVE
SENSING
LINE
BLOCK VALVE
REDUCED
PRESSURE
GAUGE
6
Type 92B

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 6492HM SAFETY
OVERRIDE PILOT
TYPE 92B PILOT
TYPE 92B MAIN VALVE TYPE 92B MAIN VALVE
TYPE 92B PILOT
TOP VIEW
TYPE 92B
MAIN VALVE
TYPE 6492HM SAFETY
OVERRIDE PILOT
TYPE 92B PILOT TYPE 92B MAIN VALVE
TYPE 92B PILOT
SIDE VIEW
Figure 5. Safety Override System Installation
7
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.
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:
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.
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.
8
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:
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
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®spring is used, only about
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.
Maintenance
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.
9
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.
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.
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).
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.
10
Type 92B

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.
Figure 6. Typical Type 92B Construction
PIPE PLUG OR TUBE FITTING –
DIRECTLY OVER ORIFICE
FOR EASE OF ACCESSIBILITY
BLEED ORIFICE –
EASILY CLEANED WITH WIRE
VALVE BODY
DIAPHRAGMS
AND DIAPHRAGM PLATE
DIAPHRAGM CASE
GUIDE
BUSHING
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
PILOT VALVE SPRING
BOTTOM FLANGE
REDUCING VALVE SPRING
VALVE PLUG AND
SEAT RING
W1322-3A
11
Type 92B

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
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.
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.
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.
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
12
Type 92B

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.
Table 5. Type 92B Main Valve Torques
BODY MATERIAL
BODY SIZE BLEED FITTING
(KEY 61)
DIAPHRAGM CASE CAP
SCREWS/HEX NUTS
(KEY 63/64)
BOTTOM FLANGE CAP
SCREWS (KEY 55)
NPS DN Ft-lbs N•m Ft-lbs N•m Ft-lbs N•m
Cast Iron
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
Steel,
Stainless steel
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
Table 6. Type 92B Pilot Torques
VALVE GUIDE
(KEY 2)
ORIFICE
(KEY 5)
BELLOWS RETAINER
(KEY 8)
CHECK VALVE
ASSEMBLY (KEY 75)
PIPE PLUG
(KEY 74)
CAP SCREWS
(KEY 17)
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 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
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
- continued -
13
Type 92B

Key Description Part NumberKey Description Part Number
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
*Recommended spare part
Inconel®is a trademark owned by Special Metals Corporation.
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 -
14
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 -
15
Type 92B

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
*Recommended spare part
Key Description Part Number 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
- continued -
16
Type 92B

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 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) - - - - - - - - - - -
17
Type 92B

30A6348-B1A
30A6348-B2
Figure 8. Type 92B Main Valve Assembly
18
Type 92B

BF9827-G
Figure 10. High-Pressure Pilot Assembly
CJ8998-E
Figure 9. Low-Pressure Pilot Assembly
20
19
13
17
24
75
22
19
Type 92B

1J4965
Figure 11. Optional Handwheel Assembly
32A4712-A
A3505-1
STEEL AND
STAINLESS STEEL BODY
CN7100
CAST IRON BODY
Figure 12. Optional Sealed Adjusting Screw
34
39
38
15
87
15
16
14
37
31
32
33
25
14
30
35
36
29
28
27
26
34
20
Type 92B