Emerson 63EG User manual

Types 63EG and 1098-63EGR
Instruction Manual
D100315X012
August 2019
W6955
W3003-1*
Figure 1. Type 63EG Relief Valve or Backpressure Regulator
Figure 2. Type 1098-63EGR Relief Valve
Type 63EG Relief Valve or
Backpressure Regulator
Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion
and/or fire causing property damage and
personal injury or death.
Fisher™ relief valves 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 a leak develops or if the outlet
continually vents gas, service to the
unit may be required. Failure to correct
trouble could result in a hazardous
condition. Only a qualified person must
install or service the unit.
Call a gas service person to service the
unit. Only a qualified person must install
or service the regulator.
Introduction
Scope of the Manual
This instruction manual provides instructions
for the installation, maintenance and parts
ordering information for a Type 63EG relief
valve or backpressure regulator with either a
Type 6358, 6358B, 6358EB or 6358EBH pilot and
a Type 1098-63EGR relief valve with a Type 6358B
pilot. Instructions and parts ordering information for the
optional Type 252 or P590 Series pilot supply filters
and any other equipment used with these valves are
found in separate manuals.
!
WARNING

Types 63EG and 1098-63EGR
2
Specifications
Specifications for various Types 63EG and 1098-63EGR constructions are listed on Specifications section
and Tables 1 to 4. The specifications for a given construction as it originally comes from the factory are
stamped on nameplates located on the main valve body and the upper diaphragm case of the actuator for a
Type 1098-63EGR construction. The pilot control spring range appears on the pilot spring case and the pilot
restriction code is indicated by a letter stamped on the bottom of the pilot body next to the tapped side outlet: an
S for the red standard-diameter (No. 57 drill size) restriction, an L for the blue large-diameter (No. 47 drill size)
restriction for liquid service or an H for the yellow small-diameter (No. 70 drill size), high-gain restriction.
Available Constructions
Type 63EG with a 6358 Series Pilot
Type 1098-63EGR with a Type 6358B Pilot
Main Valve Body and End Connection Styles(1)(2)
Main Valve Flow Characteristic
Linear (standard), Quick-Open (optional),or
Whisper Trim™ III (optional)
Main Valve Flow Direction
Up through seat ring and out through cage
Process Temperature Capabilities(2)
Nitrile (NBR): -20 to 180°F / -29 to 82°C
Fluorocarbon (FKM): 0 to 300°F / -18 to 149°C
Water is limited to 0 to 180°F / -18 to 82°C
Ethylenepropylene (EPR): -20 to 275°F /
-29 to 135°C
Peruoroelastomer (FFKM): 0 to 425°F /
-18 to 218°C
Options
• Aluminum or Stainless steel Type 252 pilot
supply filter
• Brass Type P594-1 filter
• Pressure gauges(5)
• NACE Construction
Approximate Weights (including pilot)
Type 63EG
NPS 1 / DN 25: 35 lbs / 16 kg
NPS 2 / DN 50: 55 lbs / 25 kg
NPS 3 / DN 80: 95 lbs / 43 kg
NPS 4 / DN 100: 145 lbs / 66 kg
NPS 6 / DN 150: 330 lbs / 150 kg
NPS 8 x 6 / DN 200 x 150: 670 lbs / 304 kg
NPS 12 X 6 / DN 300 X 6: 1150 lbs / 521 kg
Type 1098-63EGR
NPS 1 / DN 25: 65 lbs / 29 kg
NPS 2 / DN 50: 85 lbs / 39 kg
NPS 3 / DN 80: 125 lbs / 57 kg
NPS 4 / DN 100: 175 lbs / 79 kg
NPS 6 / DN 150: 360 lbs / 163 kg
NPS 8 x 6 / DN 200 x 150: 700 lbs / 318 kg
NPS 12 X 6 / DN 300 X 6: 1180 lbs / 535 kg
1. EN (or other) ratings and end connections can usually be supplied; consult your local Sales O󰀩ce.
2. The pressure and/or temperature limits listed in this Instruction Manual and any applicable standard limitation should not be exceeded.
3. Includes buildup.
4. Set pressure is dened as the pressure at which the pilot starts-to-discharge.
5. Consult your local Sales O󰀩ce for information on available gauges and units of measurement.
MAIN VALVE
BODY SIZE
END CONNECTION STYLES AND
RATINGS
NPS DN Cast Iron Steel or
Stainless Steel
1, 2 25, 50 NPT;
CL125 FF flanged
NPT; BWE; SWE;
CL150 RF, CL300 RF,
CL600 RF or
PN 16/25/40 flanged
3, 4, 6 80, 100, 150 CL125 FF flanged
BWE; CL150 RF,
CL300 RF, CL600 RF or
PN 16/25/40 flanged
8 x 6 or
12 x 6
200 x 150 or
300 x 150 - - - - CL150, CL300, CL600 or BWE
Maximum Relief (Inlet(3)) Pressure(2)
Type 63EG: 400 psig / 27.6 bar or body rating,
whichever is lower
Type 1098-63EGR: 82 psig / 5.6 bar
Maximum Actuator Pressures(2) (Standard Size 40
with Type 1098-63EGR Only)
Set Pressure(4):65 psig / 4.5 bar
Operating Pressure(3):75 psig / 5.2 bar
Emergency Casing Pressure: 82 psig / 5.6 bar
Relief Set Pressure/Backpressure Control Ranges(4)
See Table 1
Main Valve Port Diameters and Valve Plug Travels
BODY SIZE PORT DIAMETER VALVE PLUG
TRAVEL
NPS DN In. mm In. mm
1
2
25
50
1.31
2.38
33
60
0.75
1.13
19
29
3
4
80
100
3.38
4.38
86
111
1.50
2.00
38
51
6,
8 x 6
and
12 x 6
150,
200 x 150
and
300 x 150
7.19 183 2.00 51

Types 63EG and 1098-63EGR
3
Product Description
Types 63EG and 1098-63EGR pilot-operated pressure
relief valves may be used for both liquid and gas
service. The Type 63EG is also suitable for throttling
backpressure or bypass applications. The main valves
in both constructions use a quick-change trim package
for fast maintenance.
Pilot Descriptions
The following pilot configurations are available
for the Type 63EG or 1098-63EGR relief valve or
backpressure regulator.
Relief Valve
For relief valve application use a Type 6358B, 6358EB
or 6358EBH relief pilot. The pilot bleeds constantly
while the relief valve is in operation. The pilot does
not bleed when inlet pressure is below set pressure.
The pilot exhaust can be connected directly to the
main valve exhaust pipe if the pilot connection and
the exhaust pipe are designed to prevent significant
backpressure buildup during full-flow conditions.
Type 6358B—Set pressure range from 10 to
125 psig / 0.69 to 8.62 bar in two ranges. This pilot is
available with a high, medium or low-gain restriction.
Type 6358EB—Set pressure range of 85 to 350 psig /
5.86 to 24.1 bar in three ranges. This pilot is available
with a high or low-gain restriction.
Type 6358EBH—Set pressure range of 250 to
400 psig / 17.2 to 27.6 bar in two ranges. This pilot is
available with a high or low-gain restriction.
Backpressure Regulator
The Type 6358 is a low bleed pilot, so it only exhausts
while it is repositioning the main valve. There is no
constant bleed with this construction which is useful for
backpressure applications where minimizing emissions
is important and the pilot exhaust can not be piped
to the downstream piping. This also minimizes dirt
buildup in the pilot. The Type 6358 has a set pressure
range of 10 to 125 psig / 0.69 to 8.62 bar in two
ranges. The Types 6358B, 6358EB and 6358EBH
relief pilots can also be used in backpressure
applications but they will exhaust any time inlet
pressure is above setpoint.
Principle of Operation
A pressure relief valve is a throttling pressure control
device that opens and closes to ensure the upstream
pressure does not rise above a predetermined
pressure. A backpressure regulator is a device that
controls and responds to changes in the upstream
pressure. It functions the same as a relief valve in that
it opens on increasing upstream pressure.
The Types 63EG and 1098-63EGR relief valves are
not ASME safety relief valves.
Type 63EG
Relief Valve
As long as the inlet pressure is below the set pressure,
the Type 6358B, 6358EB or 6358EBH pilot control
spring keeps the pilot valve plug closed. Inlet pressure
passes through the pilot restriction and through the
hollow passage of the valve plug then registers as
TYPE PILOT TYPE
RELIEF SET
PRESSURE RANGE(1) SPRING PART
NUMBER
SPRING
COLOR
SPRING WIRE
DIAMETER
SPRING FREE
LENGTH
psig bar In. mm In. mm
63EG
6358 10 to 40
35 to 125
0.69 to 2.8
2.4 to 8.6
1E392527022
1K748527202
Yellow
Red
0.148
0.187
3.76
4.75
2.00
2.19
50.8
55.6
6358B
10 to 30
30 to 60
60 to 125
0.69 to 2.1
2.1 to 4.1
4.1 to 8.6
1B788327022
1B788427022
1K748527202
Silver
Blue
Red
0.142
0.182
0.187
3.61
4.62
4.75
2.13
1.94
2.19
54.1
49.3
55.6
6358EB
85 to 140
130 to 200
180 to 350
5.9 to 9.6
9.0 to 13.8
12.4 to 24.1
17B1261X012
17B1263X012
17B1264X012
Green
Blue
Red
0.225
0.262
0.294
5.72
6.65
7.47
3.70
3.85
4.22
94.0
97.8
107
6358EBH 250 to 400 17.2 to 27.6 17B1263X012 Blue 0.262 6.65 3.85 97.8
1098-63EGR 6358B
3 to 18
15 to 40
35 to 65
0.21 to 1.2
1.0 to 2.8
2.4 to 4.5
1B986027212
1E392527022
1K748527202
Green
Yellow
Red
0.120
0.148
0.187
3.05
3.76
4.75
2.12
2.00
2.19
53.8
50.8
55.6
1. Set pressure plus buildup should not exceed maximum di󰀨erential pressure of 400 psig / 27.6 bar.
Table 1. Relief Set Pressure and Backpressure Control Ranges

Types 63EG and 1098-63EGR
4
Table 2. Minimum and Maximum Dierential Pressures
BODY SIZE MAIN VALVE
SPRING RANGE MAIN VALVE
SPRING PART
NUMBER
MAIN
VALVE
SPRING
COLOR
TYPE 63EG TYPE 63EG WITH TYPE 1098
SIZE 40 ACTUATOR
Minimum
Di󰀨erential
Pressure
Required
For Full Stroke
Maximum
Di󰀨erential
Pressure
Minimum
Di󰀨erential
Pressure
Required For
Full Stroke
Maximum
Di󰀨erential
Pressure
In. DN psig bar psig bar psig bar psig bar psig bar
1 25 30 to 125
85 to 400
2.1 to 8.6
5.9 to 27.6
14A9687X012
14A9679X012
Green
Red
70
150
4.8
10.3
125
400
8.6
27.6
2.5
- - - -
0.17
- - - -
60
- - - -
4.1
- - - -
2 50
10 to 40
30 to 125
85 to 400
0.69 to 2.8
2.1 to 8.6
5.9 to 27.6
14A6768X012
14A6626X012
14A6628X012
Yellow
Green
Red
22
30
90
1.5
2.1
6.2
40
125
400
2.8
8.6
27.6
2
3
- - - -
0.14
0.21
- - - -
20
60
- - - -
1.4
4.1
- - - -
3 80
10 to 40
30 to 125
85 to 400
0.69 to 2.8
2.1 to 8.6
5.9 to 27.6
14A6771X012
14A6629X012
14A6631X012
Yellow
Green
Red
19
25
60
1.3
1.7
4.1
40
125
400
2.8
8.6
27.6
2.5
4
- - - -
0.17
0.28
- - - -
20
60
- - - -
1.4
4.1
- - - -
4 100
10 to 40
30 to 125
85 to 400
0.69 to 2.8
2.1 to 8.6
5.9 to 27.6
14A6770X012
14A6632X012
14A6634X012
Yellow
Green
Red
16
20
55
1.1
1.4
3.8
40
125
400
2.8
8.6
27.6
3.5
5
- - - -
0.24
0.34
- - - -
20
60
- - - -
1.4
4.1
- - - -
6,
8 x 6
and
12 X 6
150,
200 x 150
and
300 X 150
10 to 40
30 to 125
85 to 400
0.69 to 2.8
2.1 to 8.6
5.9 to 27.6
15A2253X012
14A9686X012
15A2615X012
Yellow
Green
Red
16
20
55
1.1
1.4
3.8
40
125
400
2.8
8.6
27.6
6
9.5
- - - -
0.41
0.66
- - - -
20
60
- - - -
1.4
4.1
- - - -
loading pressure on top of the main valve plug. Force
from the main spring, in addition to pilot loading
pressure, provides downward loading pressure to keep
the main valve plug tightly closed.
When the inlet pressure rises above the set pressure,
the pressure on the pilot diaphragm overcomes the
control spring and opens the valve plug. The pilot then
exhausts the loading pressure from the top of the main
valve plug. The pilot continuously exhausts gas while
inlet pressure is above the set pressure. The inlet
pressure unbalance overcomes the main spring force
and opens the plug.
As the inlet pressure drops below the set pressure,
the pilot control spring closes the pilot valve plug and
the exhaust to atmosphere stops. Force from the main
spring, along with pilot loading pressure, pushes the
plug onto the seat, producing tight shutoff.
Backpressure Regulator
As long as inlet pressure remains below set pressure,
the Type 6358 pilot control spring keeps the pilot valve
plug closed. Inlet pressure bleeds around the upper
portion of the pilot valve plug and then through the
hollow passage of that valve plug to produce loading
pressure on the main valve plug. This loading pressure
along with force from the main spring provides the
pressure to keep the main valve plug tightly closed.
When inlet pressure rises above the set pressure, the
pressure on the pilot diaphragm overcomes the control
spring to close the upper portion of the valve plug and
stroke the valve plug to open the lower port. The pilot
exhausts loading pressure from the top of the main
valve plug. Inlet pressure unbalance overcomes the
main spring force to open the plug.
While the main valve is throttling, the upper port of
the pilot stays closed. The pilot exhausts only when
it repositions the main valve. As inlet pressure drops
below setpoint, the pilot control spring overcomes the
diaphragm force to stroke the valve plug down to close
the lower port and open the upper port. Force from the
main spring, along with pilot loading pressure, builds
up to close the main valve plug.
Type 1098-63EGR Relief Valve
As long as inlet pressure remains below set pressure,
the Type 6358B pilot control spring keeps the pilot
valve plug closed. Inlet pressure bleeding through the
pilot restriction and the hollow passage of the valve
stem loads the stem side of the actuator diaphragm,
balancing the actuator and letting the main valve
spring keep the main valve plug tightly shutoff.
An inlet pressure rise above the set pressure
overcomes the pilot control spring and opens the
pilot valve plug. Loading pressure bleeds out the pilot

Types 63EG and 1098-63EGR
5
INLET PRESSURE
OUTLET (EXHAUST) PRESSURE
ATMOSPHERIC PRESSURE
LOADING PRESSURE
INLET PRESSURE
OUTLET (EXHAUST) PRESSURE
ATMOSPHERIC PRESSURE
LOADING PRESSURE
EXPANDED VIEW OF THE TYPE 6358 BACKPRESSURE PILOT
DIAPHRAGM ASSEMBLY AND VALVE PLUG
exhaust faster than it can be replaced through the pilot
restriction. The pilot continuously exhausts gas while
inlet pressure is above the set pressure. This permits
inlet pressure to unbalance the actuator diaphragm
and push the actuator stem against the main valve
plug causing it to open.
As inlet pressure drops back to set pressure, the pilot
control spring closes the pilot valve plug. Loading
pressure again builds up to balance the actuator and
let the main valve plug close.
Installation
Personal injury, equipment damage or
leakage due to escaping gas or bursting
of pressure-containing parts may result
if the relief valve is installed where its
capabilities can be exceeded or where
conditions exceed any ratings of the
adjacent piping or piping connections.
To avoid injury or damage, install a
Type 63EG or 1098-63EGR relief valve
where: Service conditions are within unit
capabilities (including those given in
the Specifications section) and service
conditions are within applicable codes,
regulations or standards.
Additionally, physical damage to the
relief valve could break the pilot off the
main valve, causing personal injury and
property damage due to escaping gas.
To avoid such injury or damage, install
the unit in a safe location.
Note
On the Type EGR main valve, normal
pressure drop assists shutoff. Therefore,
leakage may result during any reverse
pressure drop condition.
1. Use qualified personnel when installing, operating
and maintaining regulators. Before installing,
inspect the main valve, pilot and tubing for any
shipment damage or foreign material that may
have collected during crating and shipment. Make
certain the body interior is clean and the pipelines
are free of foreign material. Apply pipe compound
only to the male pipe threads with a NPT body
or use suitable line gaskets and good bolting
practices with a flanged body.
2. A Type 63EG or 1098-63EGR may be installed
in any orientation, as long as flow through it
matches the direction of the arrow on the main
valve body. An upstream control line is not
required because of the integral pilot supply tubing
(key 28, Figure 12). However, for remote upstream
registration, this tubing may be disconnected from
Figure 4. Type 6358 Operational SchematicFigure 3. Type 6358B Operational Schematic
UPPER PORTION
OF VALVE PLUG
TO MAIN VALVE
DIAPHRAGM
LOWER PORTION
OF VALVE PLUG
DIAPHRAGM
ASSEMBLY
TO EXHAUST PORT
EXPANDED VIEW OF THE TYPE 6358B RELIEF
PILOT DIAPHRAGM ASSEMBLY AND VALVE PLUG
UPPER PORTION
OF VALVE PLUG
DIAPHRAGM
ASSEMBLY
TO EXHAUST PORT
RESTRICTION
PLUG
TO MAIN VALVE
DIAPHRAGM
!
WARNING
HOLLOW PASSAGE IN
VALVE PLUG SYSTEM
HOLLOW PASSAGE IN
VALVE PLUG SYSTEM
LOWER PORTION
OF VALVE PLUG
FIXED
RESTRICTION

Types 63EG and 1098-63EGR
6
M1156
E0101
Figure 6. Type 1098-63EGR Operational Schematic
PILOT EXHAUST
TYPE 6358 PILOT
MAIN VALVE PLUG
MAIN SPRING
MAIN VALVE
PILOT CONTROL SPRING
PILOT DIAPHRAGM
PILOT VALVE PLUG
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
LOADING PRESSURE
INLET PRESSURE
OUTLET PRESSURE/EXHAUST
ATMOSPHERIC PRESSURE
LOADING PRESSURE
Figure 5. Type 63EG Operational Schematic
TYPE 6358B PILOT
PILOT
EXHAUST
MAIN VALVE SPRING
VALVE STEM
PILOT CONTROL SPRING
ACTUATOR DIAPHRAGM
PILOT VALVE PLUG

Types 63EG and 1098-63EGR
7
the main valve and from the pipe tee (key 24,
Figure 12) or pipe cross (key 35, Figure 12) as
long as the 1/4 in. NPT tapping in the side of the
main valve body is plugged.
Types 63EG and 1098-63EGR relief
valves vent gas from the main valve
outlet and from the pilot exhaust. In
hazardous or flammable gas service,
personal injury, death or property
damage may occur due to fire or
explosion of accumulated vented gas.
To prevent such injury or damage, vent
the gas to a safe location. Design and
install exhaust piping to guard against
excessive flow restriction. Protect this
piping from condensation or debris that
can clog it.
For shutdown safety on backpressure
applications, install vent valves
immediately upstream and downstream
of the main valve.
3. If system operation is necessary during
maintenance or inspection, install isolating and
vent valves as needed. If upstream protection
is not provided for the entire unit, an optional
P590 Series or Type 252 pilot supply filter
installed upstream of the pilot may help protect it
from clogging.
4. A relief valve always must be installed so that
the pilot will exhaust properly and into a safe
place. The pilot spring case vent must be kept
open to atmospheric pressure. Protect this
vent from icing, moisture or other blockage as
required. If the pressed-in vent assembly (key 27,
Figure 12 or 13) remains in the pilot exhaust port
(connection A, Figure 7), it must be pointed down
if possible or otherwise protected.
5. If the exhaust is to be piped to the main valve
outlet or remotely vented, remove the vent
assembly and install obstruction-free tubing or
piping with a minimum number of bends into the
1/4 in. NPT pilot exhaust connection. Provide
protection on a remote vent by installing a
screened vent cap into the remote end of the
vent pipe.
6. If using pipe, apply a good grade of pipe compound
to the male pipe threads before making the
connection. Install tubing or piping into the
appropriate pilot connection.
7. Set pressure is defined as the pressure at which
the pilot starts-to-discharge. The set pressure of
a unit is adjusted by changing the control spring
compression on the pilot.
8. The pilot is factory-set for the set pressure
specified on the order. If no setting is specified,
set pressure is factory-set at midrange of the
spring range.
Startup and Adjustment
Key numbers are referenced in Figure 12.
1. With proper installation and adjustment completed,
slowly open the upstream shutoff valve while using
gauges to monitor pressure. On backpressure
applications using an isolating bypass, also open
the downstream shutoff valve and close the
bypass valve. Inlet pressure may be monitored
either by using the optional installed gauge
(key 29) or by removing the pipe plug (key 29) and
temporarily installing a gauge.
2. If set pressure adjustment is necessary, monitor
inlet pressure with a gauge during adjustment.
Adjustment
Key numbers are referenced in Figures 14 and 15.
The 6358 Series relief pilots are adjusted by removing
the closing cap (key 12), loosening the locknut
(key 11) and turning the adjusting screw (key 10)
clockwise to increase or counterclockwise to decrease
the set pressure. When the required set pressure is
maintained for several minutes, tighten the locknut to
lock the adjusting screw and install the closing cap.
Shutdown
Relief Installations
Slowly close the upstream shutoff valve. Release all
pressure from the main valve and pilot by opening
the upstream vent valve or by slightly loosening one
of the compression fittings on the pilot supply tubing
or actuator tubing until the trapped pressure starts
bleeding out. Once all pressure is released, tighten the
compression fitting.
!
WARNING

Types 63EG and 1098-63EGR
8
are referenced in Figure 10. Key numbers for both
the complete Type 63EGR main valve and its trim
package are referenced in Figure 11. Replacement
trim package assembly numbers are listed in the
parts list.
Note
All disassembly, trim change and
reassembly steps in this section may
be performed with the relief valve in the
main line. The pilot and its pipe nipple
need not be removed for trim package
replacement with the Type 63EGR main
valve but must be removed with the
Type 63EG main valve.
1. Remove the cap screws (key 3) on a cast iron or
steel body or remove the stud bolt nuts (key 29,
not shown) on a Stainless steel body. Pry the body
flange (key 2) loose from the valve body (key 1)
and lift out the trim package.
2. Perform any required inspection, cleaning or
maintenance on the exposed surfaces of the
body interior or trim package. Replace the gasket
(key 4) or cage O-ring (key 17) as necessary.
3. On a factory-built replacement trim package with
indicator assembly, check indicator zeroing by
unscrewing the indicator protector (key 19) and
seeing if the flange on the indicator nut (key 22)
lines up evenly with the bottom marking on
the indicator scale (key 18). If not, remove the
indicator scale and separate the indicator nut and
hex nut (key 8). Hold the indicator scale against
the indicator fitting (key 5) with the scale base
resting against the shoulder of the fitting and turn
the indicator nut until its flange is aligned with
the bottom scale marking. Then lock both nuts
against each other and install the indicator scale
and protector.
Note
In the following step a Type 63EG trim
package must be installed so the body
flange and body side tappings are
aligned, but a Type 63EGR trim package
requires no special orientation in
the body.
Backpressure Installations
Slowly close the upstream shutoff valve while opening
the bypass valve. Then close the downstream
shutoff valve and open both vent valves to release all
pressure from the main valve and pilot.
Maintenance
Relief valve parts are subject to normal wear and
must be inspected and replaced as necessary. The
frequency of inspection and replacement of parts
depends upon the severity of service conditions or the
requirements of local, state and federal regulations.
Due to the care Emerson™ takes in meeting
all manufacturing requirements (heat treating,
dimensional tolerances, etc.), use only replacement
parts manufactured or furnished by Emerson.
Lubricate the stem O-rings on the Type 1098
actuator annually, using the grease fitting (key 28,
Figure 13). Stem O-rings can be checked for damage
during normal operation by line pressure leakage
or unexpected grease extrusion from the actuator
vent (key 27, Figure 13). Unless otherwise specified,
lubricate all O-rings, gaskets and seals with a good
grade of general-purpose grease and install gently
rather than force into position. Update nameplates to
accurately indicate any field changes in equipment,
materials, service conditions or pressure settings.
Avoid personal injury or damage
to property from sudden release
of pressure or uncontrolled gas or
other process fluid. Before starting
disassembly: isolate the relief valve from
system pressure, release all internal
pressure and vent the pilot(s) and main
valve diaphragm loading pressure.
Type 63EG or 63EGR Main Valve
Replacing Quick-Change Trim Package
Perform this procedure if the entire trim package
(Figure 10 or 11) or only the gasket or cage O-ring
(key 4 or 17, Figure 10 or 11) will be replaced if
exposed surfaces of the trim package or body interior
will be inspected or cleaned. Key numbers for both the
complete Type 63EG main valve and its trim package
!
WARNING

Types 63EG and 1098-63EGR
9
A3790
4. Coat the cage seating surfaces of the valve body
web and the body flange seating surfaces of the
valve body neck with a good grade of general-
purpose grease. Install the trim package and
secure it evenly with the cap screws or hex nuts.
With a Type 63EG main valve, install the pilot and
its pipe nipple and connect the pilot supply tubing.
Replacing Trim Parts
Perform this procedure if inspecting, cleaning or
replacing individual parts in a trim package. Key
numbers for the Type 63EG main valve are referenced
in Figure 10. Key numbers for the Type 63EGR
main valve are referenced in Figure 11. Both types
are available with travel indicator, even though
travel indicator key numbers are referenced only
in Figure 11.
Note
Access to the spring (key 9), flange
O-ring (key 21) or travel indicator
parts, in step 1 can be gained without
removing the body flange (key 2).
1. Remove the flange plug and spring (keys 27
and 9) or the travel indicator assembly by
removing lower indicator fitting (key 5) from
the body flange (key 2). Proceed to step 5 if
maintenance on only the travel indicator parts
is needed and then proceed to step 11 for
reassembly instructions.
2. Remove the cap screws (key 3) on a cast iron or
steel body or remove the stud bolt nuts (key 29,
not shown) on a Stainless steel body and
(after removing the pilot and pipe nipple from a
Type 63EG main valve) pry the body flange loose
from the valve body (key 1).
3. Use the valve body as a holding fixture if desired.
Flip the body flange over and anchor it on the
valve body as shown in Figure 9, removing the
pipe plug (key 31) first if necessary.
4. To gain access to the port seal (key 12), upper
seal (key 15) or valve plug parts, unscrew the seat
ring (key 13) from the cage (key 11) and the cage
from the body flange. For leverage, a wrench
handle or similar tool may be inserted into the
orifice slots (Figure 9) and a strap wrench may be
wrapped around a standard or a Whisper Trim™
cage or a soft bar may be inserted through the
PORT A (EXHAUST) —THE MAIN VALVE LOADING PRESSURE IS
DISCHARGED TO THE MAIN VALVE OUTLET OR TO
ATMOSPHERE PRESSURE.
PORT C (LOADING) —A LOADING PRESSURE SIGNAL IS SENT FROM THIS
PORT TO THE MAIN VALVE DIAPHRAGM CASING.
PORT D (CONTROL)—THE MAIN VALVE INLET PRESSURE IS SENSED AT
THIS PORT.
Figure 7. Pilot Port Functions
windows of a standard cage. To remove the piston
ring (key 14) and/or plug O-ring (key 20), remove
the valve plug (key 16) from the body flange, insert
a screwdriver into the precut fold over area of the
piston ring and unfold the piston ring. Proceed to
step 6 if no further maintenance is necessary.
5. To gain access to a part in the travel indicator
assembly, remove the indicator protector (key 19)
and indicator scale (key 18). Since some
compression is left in the spring, carefully remove
the flanged nut (key 22) and hex nut (key 8). A
screwdriver may be inserted through the press-fit
O-ring retainer (key 6) to remove the stem O-ring
without removing the O-ring retainer. If necessary,
unclip the E-ring from the indicator stem.
6. Thoroughly clean and inspect all parts before
reassembling. For proper operation, a Type 63EG
valve plug must have pipe plugs (key 32,
Figure 12) installed in all four balancing ports,
but a Type 63EGR valve plug must have these
balancing ports left open.
7. Apply a minimal amount (2 to 3 drops) of silicon oil
to the port seal (key 12) and install it flat side down
in the gland in the seat ring (key 13). Run a finger
around the port seal (key 12) until it is completely
PORT C
(LOADING)
PORT A
(EXHAUST)
PORT D
(CONTROL)

Types 63EG and 1098-63EGR
10
W2772W3012
Figure 8. Easy-Maintenance Trim Figure 9. Seat Ring and/or Cage Removal
Using Body as a Holding Fixture
flat to remove any trapped air. Lubricate the
seat ring threads and firmly tighten the seat ring
(key13) into the cage (key 11) using a bar. Use a
back and forth motion during tightening to ensure
the seal doesn’t wrinkle. Back out the seat ring
(key 13) 1 in. / 2.5 cm after tightening.
8. Install the plug O-ring (key 20) and piston ring
(key 14) onto the valve plug (key 16). Insert the
valve plug into the body flange (key 2).
9. Apply a minimal amount (2 to 3 drops) of silicon
oil to the upper seal (key 15) and install it flat
side down in the gland in the cage (key 11). Run
a finger around the upper seal (key 15) until
it is completely flat to remove any trapped air.
Lubricate the cage threads and using a bar or
strap wrench, firmly tighten the cage (key 11) into
the body flange (key 2). Use a back and forth
motion during tightening to ensure the seal doesn’t
wrinkle. Back out the cage (key 11) 1 in. / 2.5 cm
after tightening.
10. Remove the upside-down body flange if it was
anchored on the body. Coat the cage seating
surfaces of the valve body web and the body
flange seating surfaces of the valve body neck
with a good grade of general-purpose grease.
Install the body flange on the body and secure it
evenly with the cap screws or hex nuts. With a
Type 63EG main valve, install the pilot and its pipe
nipple and connect the pilot tubing.
Type EGR Main Valve Cap Screw (key 3) Torque
11. On a main valve without travel indicator, install
the spring (key 9) and make sure the flange O-ring
(key 21) is installed on the flange plug (key 27).
Install the flange plug; if necessary, compress
the spring with it enough to ensure secure
engagement of plug and body flange threads
before continuing with final tightening of the plug.
On a main valve with travel indicator, make
sure the ange and stem O-rings (keys 21 and 7)
and the O-ring retainer (key 6) are installed in
the indicator tting (key 5). Orient the spring
seat (key 28) as shown in Figure 11 and attach it
with the E-ring (key 23) to the slotted end of the
indicator stem (key 10). Install the spring (key 9)
on the spring seat.
SIZE TORQUE
NPS DN Ft-Lbs N•m
1 25 75 to 95 102 to 129
2 50 55 to 70 75 to 95
3 80 100 to 130 136 to 176
4 100 160 to 200 217 to 271
6, 8 x 6, 12 x 6 150, 200 x 150,
300 x 150 275 to 300 373 to 407

Types 63EG and 1098-63EGR
11
12. Being careful not to cut the stem O-ring with the
stem threads, install the indicator fitting (key 5)
down over the indicator stem (key 10) until resting
on the spring. Install the hex nut (key 8) and then
the flanged indicator nut (key 22) on the indicator
stem, pushing on the fitting if necessary to provide
sufficient stem thread exposure. To maintain
clearance for indicator part installation, draw up
the spring seat by turning the hex nut down on the
stem until the threads bottom.
13. Install the indicator fitting (key 5) with attached
parts into the body flange (key 2). Back the hex
nut off (key 8) until the spring completely closes
the valve plug against the port and upper seals,
as indicated by stem threads showing between
this nut and the fitting. Hold the indicator scale
(key 18) against the fitting with the scale base
resting against the shoulder of the fitting and turn
the indicator nut (key 22) until its flange is aligned
with the bottom scale marking. Then lock both nuts
against each other and install the indicator scale
and protector (keys 18 and 19).
Type 1098 Actuator and Pilot Mounting
Perform this procedure if changing the actuator
or inspecting, cleaning or replacing actuator and/
or pilot mounting parts. Actuator part key numbers
are referenced in Figure 13 and mounting part key
numbers in Figure 12 unless otherwise indicated.
1. The actuator and pilot(s) may be removed and
replaced as a unit by disconnecting the pilot
supply tubing (key 28) from the main valve.
2. Access to all internal parts except the stem
O-rings, bearings and wiper ring (keys 6, 56
and 57) may be gained without removing the
bonnet (key 3) or upper diaphragm case (key 2)
from the main valve or the pilot(s) from the bonnet
pipe nipple (key 22). Disconnect the actuator
tubing (key 33) from the connector fitting (key 25).
3. Remove the cap screws (key 10), nuts (key 11),
lower diaphragm case (key 1), diaphragm (key 7)
and diaphragm plate (key 8). To separate the stem
(key 12) from the diaphragm plate (key 8), remove
the stem cap screw (key 9).
4. To remove the case O-ring (key 5), unscrew
the four case cap screws (key 4), remove the
upper diaphragm case (key 2) and remove the
case O-ring.
5. Lubricate both stem O-rings (key 6) and wiper
ring (key 57). Install them with the stem bearings
(key 56) in the bonnet (key 3). Lubricate the case
O-ring (key 5) and install it in the bonnet (key 3).
Line up the upper diaphragm hole with the holes
in the bonnet; insert and tighten the four case
cap screws. Thread the bonnet into the main
valve body.
6. Secure the diaphragm plate to the stem with
the stem cap screw (key 9). Lay the entire
diaphragm, diaphragm plate and stem assembly
into the lower diaphragm case so the diaphragm
convolution laps up over the diaphragm plate
according to Figure 13. Then install the stem
slowly up into the bonnet to prevent stem or
O-ring damage and secure the lower diaphragm
case to the upper diaphragm case with the cap
screws and nuts. Tighten the cap screws and nuts
evenly in a crisscross pattern to avoid crushing
the diaphragm.
7. Grease the stem O-rings through the grease
fitting (key 28) until excess grease starts coming
out the vent (key 27).
8. Install the pipe nipple(s) and pilot(s) if they
were removed during maintenance. Connect
the actuator and pilot supply tubing if they
were disconnected.
6358 Series Pilots
Key numbers are referenced in Figures 14 and 15. The
pilot may remain on the pipe nipple (key 22, Figure 12)
during maintenance.
Avoid personal injury or damage
to property from sudden release
of pressure or uncontrolled gas or
other process fluid. Before starting
to disassemble, carefully release all
pressures according to the shutdown
procedure. Use gauges to monitor inlet,
loading and outlet pressures while
releasing these pressures.
Disassembly
1. If necessary to check the outlet end of the body
cavity and the seating surfaces for moisture or
debris, remove the body plug (key 3) and body
plug O-ring (key 13) from the body (key 1).
!
WARNING

Types 63EG and 1098-63EGR
12
2. Remove the closing cap (key 12), loosen the
locknut (key 11) and back out the adjusting screw
(key 10) until compression is removed from the
control spring (key 7).
3. Remove the machine screws (key 17) and
separate the spring case (key 2) from the body
assembly. Remove the control spring seat
(key 8), the control spring (key 7) and, if used, the
diaphragm limiter (key 40).
4. Lift out the diaphragm assembly (key 5) and valve
plug (key 4). Check the stem guide (key 9) and
restriction (key 20) for damage or plugging. The
Type 6358 has a restriction plug, not a restriction.
5. If necessary to replace the diaphragm assembly,
the valve plug (key 4), the valve spring (key 14) or
the stem O-ring (key 37), remove the connector
cap (key 6) and connector cap O-ring or gasket
(key 36) from the top of the diaphragm assembly.
Assembly
1. If removed, install the body plug O-ring (key 13)
over the body plug (key 3) and install the body
plug into the body (key 1).
2. Install the stem guide (key 9), if removed and
make sure to install the connector cap O-ring or
gasket (key 36) between the body (key 1) and the
stem guide.
Note
In step 3, if installing a different size
restriction, be sure to remove the code
letter on the bottom of the pilot and
indicate the new letter.
3. If the restriction or restriction plug (key 20) was
removed, coat the threads with lubricant and
install it.
4. If replacing the stem O-ring (key 37), sparingly
apply lubricant and install the O-ring over the valve
plug (key 4).
5. If removed, install the valve plug (key 4) and valve
spring (key 14) into the diaphragm assembly
(key 5). Install a replacement connector cap O-ring
or gasket (key 36) on the diaphragm assembly and
secure with the connector cap (key 6).
6. Install the diaphragm assembly (key 5) and push
down on it to see if the valve plug (key 4) moves
smoothly. The diaphragm assembly should stroke
approximately 1/16 in. / 159 mm after the valve
plug contacts the port.
Note
In step 7, if installing a control spring of
a different set pressure range, be sure
to remove the set pressure range on the
spring case and indicate the new range.
7. Stack the control spring (key 7), the control spring
seat (key 8) and, if used, the diaphragm limiter
(key 40) onto the diaphragm assembly (key 5).
Make sure to install the diaphragm limiter beveled
side up.
8. Install the spring case (key 2) on the body (key 1)
with the vent assembly (key 16) oriented to
prevent clogging or entrance of moisture. Install
the machine screws (key 17) and tighten in a
crisscross pattern, using 5 to 7 ft-lbs / 7 to 9 N•m
of torque.
9. Replace the closing cap gasket (key 19) and
install the closing cap (key 12). When all
maintenance is complete, refer to the Startup
and Adjustment section to put the relief valve or
backpressure regulator into operation and adjust
the pressure setting.
Parts Ordering
Each Type 63EG or 1098-63EGR relief valve is
assigned a serial number or FS number which can be
found on the nameplates. Refer to this number when
contacting your local Sales Office for assistance or
when ordering replacement parts.
When ordering a replacement part, be sure to include
the complete 11-character part number. Separate kits
containing all recommended spare parts are available
for both the main valve and pilot.
Note
In this parts list, parts marked NACE are
intended for corrosion-resistant service
as detailed in the NACE International
Standard MR0175-2003 and MR0103.

Types 63EG and 1098-63EGR
13
Parts List
Main Valve (Figure 10 or 11)
Key Description Part Number
Main Valve Parts kit (included are keys 4, 7, 12,
14, 15, 17, 20 and 21)
Nitrile (NBR)
NPS 1 / DN 25 R63EGX00112
NPS 2 / DN 50 R63EGX00122
NPS 3 / DN 80 R63EGX00132
NPS 4 / DN 100 R63EGX00142
NPS 6 / DN 150 R63EGX00162
Fluorocarbon (FKM)
NPS 1 / DN 25 R63EGXFK112
NPS 2 / DN 50 R63EGXFK122
NPS 3 / DN 80 R63EGXFK132
NPS 4 / DN 100 R63EGXFK142
NPS 6 / DN 150 R63EGXFK162
Parts kit, Quick Change Trim Assembly (included are
keys 2, 11, 9, 16, 13 and Nitrile (NBR) elastomers)
Type 63EG with Steel Body Flange
10 to 40 psig / 0.69 to 2.76 bar,
Spring color, Yellow
NPS 2 / DN 50 25A3169X352
NPS 3 / DN 80 25A3169X392
NPS 4 / DN 100 25A3169X432
NPS 6 / DN 150 25A3169X472
30 to 125 psig / 2.07 to 8.62 bar,
Spring color, Green
NPS 1 / DN 25 25A3170X422
NPS 2 / DN 50 25A3169X362
NPS 3 / DN 80 25A3169X402
NPS 4 / DN 100 25A3169X442
NPS 6 / DN 150 25A3169X482
85 to 400 psig / 5.86 to 27.6 bar,
Spring color, Red
NPS 1 / DN 25 25A3170X442
NPS 2 / DN 50 25A3169X372
NPS 3 / DN 80 25A3169X412
NPS 4 / DN 100 25A3169X452
NPS 6 / DN 150 25A3169X492
Type 1098-63EGR
3 to 65 psig / 0.21 to 4.48 bar,
spring color, Green
Cast Iron Body Flange
NPS 2 / DN 50 25A3169X092
NPS 3 / DN 80 25A3169X152
NPS 4 / DN 100 25A3169X222
NPS 6 / DN 150 25A3169X272
Steel Body Flange
NPS 2 / DN 50 25A3169X382
NPS 3 / DN 80 25A3169X422
NPS 4 / DN 100 25A3169X462
NPS 6 / DN 150 25A3169X502
Key Description Part Number
1 Valve Body
Type 63EG
Cast Iron
NPT 1 34B7611X012
NPT 2 38A8845X012
CL125 FF
NPS 1 / DN 25 34B8630X012
NPS 2 / DN 50 38A8847X012
NPS 3 / DN 80 38A8851X012
NPS 4 / DN 100 38A8865X012
NPS 6 / DN 150 38A8875X012
NPT 1 37B5946X012
NPT 1 (NACE) 37B5946X022
NPT 2 38A8848X012
NPT 2 (NACE) 38A8848X022
CL150 RF
NPS 1 / DN 25 37B5947X012
NPS 1 / DN 25 (NACE) 37B5947X022
NPS 2 / DN 50 38A8853X012
NPS 2 / DN 50 (NACE) 38A8853X052
NPS 3 / DN 80 38A8872X012
NPS 3 / DN 80 (NACE) 38A8872X062
NPS 4 / DN 100 38A8867X012
NPS 4 / DN 100 (NACE) 38A8867X032
NPS 6 / DN 150 38A7115X012
NPS 6 / DN 150 (NACE) 38A7115X022
NPS 8 x 6 / DN 200 x 150 GE05973X012
NPS 8 x 6 / DN 200 x 150 (NACE) GE05973X022
CL300 RF
NPS 1 / DN 25 37B5948X012
NPS 1 / DN 25 (NACE) 37B5948X022
NPS 2 / DN 50 38A8849X012
NPS 2 / DN 50 (NACE) 38A8849X022
NPS 3 / DN 80 38A8871X012
NPS 3 / DN 80 (NACE) 38A8871X042
NPS 4 / DN 100 38A8869X012
NPS 4 / DN 100 (NACE) 38A8869X022
NPS 6 / DN 150 38A8873X012
NPS 6 / DN 150 (NACE) 38A8873X022
NPS 8 x 6 / DN 200 x 150 GE05974X012
NPS 8 x 6 / DN 200 x 150 (NACE) GE05974X022
CL600 RF
NPS 1 / DN 25 37B5949X012
NPS 1 / DN 25 (NACE) 37B5949X022
NPS 2 / DN 50 38A8844X012
NPS 2 / DN 50 (NACE) 38A8844X022
NPS 3 / DN 80 38A8852X012
NPS 3 / DN 80 (NACE) 38A8852X032
NPS 4 / DN 100 38A8866X012
NPS 4 / DN 100 (NACE) 38A8866X022
NPS 6 / DN 150 38A8874X012
NPS 6 / DN 150 (NACE) 38A8874X022
NPS 8 x 6 / DN 200 x 150 GE05975X012
NPS 8 x 6 / DN 200 x 150 (NACE) GE05975X022
PN 16/25/40
NPS 1 / DN 25 GE05956X012
NPS 2 / DN 50 GE05960X012
NPS 3 / DN 80 GE05965X012
NPS 4 / DN 100 GE05969X012
NPS 6 / DN 150 GE05972X012
- continued -

Types 63EG and 1098-63EGR
14
Key Description Part Number
1 Valve Body (continued)
WCB
PN 25, NPS 8 X 6 / DN 200 x 150 GE05977X012
BWE, NPS 8 X 6 / DN 200 x 150 GE05976X012
CF8M Stainless Steel
NPT 1 37B5946X032
NPT 2 38A8848X032
CL150 RF
NPS 1 / DN 25 37B5947X032
NPS 2 / DN 50 38A8853X072
NPS 3 / DN 80 38A8872X052
NPS 4 / DN 100 38A8867X042
NPS 6 / DN 150 38A7115X032
CL300 RF
NPS 1 / DN 25 37B5948X032
NPS 2 / DN 50 38A8849X032
NPS 3 / DN 80 38A8871X052
NPS 4 / DN 100 38A8869X032
NPS 6 / DN 150 38A8873X032
CL600 RF
NPS 1 / DN 25 37B5949X032
NPS 2 / DN 50 38A8844X032
NPS 3 / DN 80 38A8852X042
NPS 4 / DN 100 38A8866X032
NPS 6 / DN 150 38A8874X032
PN 16/25/40
NPS 1 / DN 25 GE05956X022
NPS 2 / DN 50 GE05960X022
NPS 3 / DN 80 GE05965X022
NPS 4 / DN 100 GE05969X022
NPS 6 / DN 150 GE05972X022
2 Body Flange
Cast Iron, ENC
NPS 1 / DN 25 24A6779X012
NPS 2 / DN 50 25A3168X012
NPS 3 / DN 80 24A9034X012
NPS 4 / DN 100 25A2309X012
NPS 6 / DN 150 34A8172X012
WCC Steel, ENC, heat-treated (NACE)
NPS 1 / DN 25 24A6779X012
NPS 2 / DN 50 25A2254X012
NPS 3 / DN 80 25A2300X012
NPS 4 / DN 100 24A9032X012
NPS 6 / DN 150 34A7152X012
316 Stainless steel (NACE)
NPS 1 / DN 25 24A6779X062
NPS 2 / DN 50 25A2254X082
NPS 3 / DN 80 25A2300X122
NPS 4 / DN 100 24A9032X042
NPS 6 / DN 150 34A7152X052
3 Cap Screw, Zinc-plated steel (use with Cast iron
and steel bodies)
NPS 1 / DN 25, Cast iron and steel bodies
(4 required) 1R281124052
NPS 2 / DN 50 (8 required) 1A453324052
NPS 3 / DN 80 (8 required) 1A454124052
NPS 4 / DN 100 (8 required) 1A485724052
NPS 6 / DN 150 (12 required) 1U513124052
3 Stud Bolt, steel (use with Stainless
steel body) (not shown)
NPS 1 / DN 25, Stainless steel bodies
(4 required) 1R284835222
NPS 2 / DN 50 (8 required) 1K242935222
NPS 3 / DN 80 (8 required) 1A378135222
NPS 4 / DN 100 (8 required) 1R369035222
NPS 6 / DN 150 (12 required) 1A365635222
Key Description Part Number
4* Gasket, composition
NPS 1 / DN 25 14A6785X012
NPS 1 / DN 25 for oxygen service 14A6785X052
NPS 2 / DN 50 14A5685X012
NPS 2 / DN 50 for oxygen service 14A5685X072
NPS 3 / DN 80 14A5665X012
NPS 3 / DN 80 for oxygen service 14A5665X022
NPS 4 / DN 100 14A5650X012
NPS 4 / DN 100 for oxygen service 14A5650X062
NPS 6 / DN 150 14A6984X012
NPS 6 / DN 150 for oxygen service 14A6984X032
5 Indicator Fitting, plated steel
(use only with optional travel indicator)
NPS 1 / DN 25 T21117T0012
NPS 1 / DN 25 (NACE) T21117T0022
NPS 2, 3 and 4 / DN 50, 80 and 100 T21107T0012
NPS 2, 3 and 4 / DN 50, 80 and 100 (NACE) T21107T0022
NPS 6 / DN 150 T21120T0012
6 O-ring Retainer (use only with
optional travel indicator) 416 Stainless steel T14276T0012
7* Stem O-ring (use only with optional
travel indicator)
For NPS 1 / DN 25
Nitrile (NBR) 1D687506992
Fluorocarbon (FKM) 1N430406382
For NPS 2, 3, 4 and 6 / DN 50, 80, 100 and 150
Nitrile (NBR) 1E472706992
Fluorocarbon (FKM) 1N430406382
FFKM
NPS 1, 2, 3, 4 and 6 /
DN 25, 50, 80, 100 and 150 1D6875X0082
EPR
NPS 1, 2, 3, 4 and 6 /
DN 25, 50, 80, 100 and 150 1D6875X0092
8 Hex Nut, plated steel (used only with optional
travel indicator) 1A662228992
9(1) Spring
Type 63EG
10 to 40 psig / 0.69 to 2.76 bar
allowable set pressure, Yellow
Zinc-plated steel
NPS 2 / DN 50 14A6768X012
NPS 3 / DN 80 14A6771X012
NPS 4 / DN 100 14A6770X012
NPS 6 / DN 150 15A2253X012
Inconel® X750 (NACE)
NPS 2 / DN 50 16A5502X012
NPS 3 / DN 80 16A5505X012
NPS 4 / DN 100 16A5507X012
NPS 6 / DN 150 16A5509X012
30 to 125 psig / 2.07 to 8.62 bar
allowable set pressure, Green
Zinc-plated steel
NPS 1 / DN 25 14A9687X012
NPS 2 / DN 50 14A6626X012
NPS 3 / DN 80 14A6629X012
NPS 4 / DN 100 14A6632X012
NPS 6 / DN 150 14A9686X012
Inconel X750 (NACE)
NPS 1 / DN 25 11B6769X012
NPS 2 / DN 50 16A5501X012
NPS 3 / DN 80 16A5503X012
NPS 4 / DN 100 16A5506X012
NPS 6 / DN 150 16A5510X012
*Recommended spare part.
Inconel®is a mark owned by Special Metal Corporation.
1. Part included in trim package assembly.
- continued -

Types 63EG and 1098-63EGR
15
Key Description Part Number
9(1) Spring
Type 63EG (continued)
85 to 400 psig / 5.86 to 27.6 bar
allowable set pressure, Red
Zinc-plated steel
NPS 1 / DN 25 14A9679X012
NPS 2 / DN 50 14A6628X012
NPS 3 / DN 80 14A6631X012
NPS 4 / DN 100 14A6634X012
NPS 6 / DN 150 15A2615X012
Inconel®X750 (NACE)
NPS 1 / DN 25 10B1882X012
NPS 2 / DN 50 16A5499X012
NPS 3 / DN 80 16A5500X012
NPS 4 / DN 100 16A5998X012
NPS 6 / DN 150 16A6000X012
Type 1098-63EGR (continued)
3 to 65 psig / 0.21 to 4.48 bar
allowable set pressure, Green
Zinc-plated steel
NPS 1 / DN 25 14A9687X012
NPS 2 / DN 50 14A6626X012
NPS 3 / DN 80 14A6629X012
NPS 4 / DN 100 14A6632X012
NPS 6 / DN 150 14A9686X012
Inconel X750 (NACE)
NPS 1 / DN 25 11B6769X012
NPS 2 / DN 50 16A5501X012
NPS 3 / DN 80 16A5503X012
NPS 4 / DN 100 16A5506X012
NPS 6 / DN 150 16A5510X012
10 Indicator Stem (used only
with optional travel indicator)
Stainless steel
NPS 1 / DN 25 T14311T0012
NPS 2 / DN 50 T14275T0012
NPS 3 / DN 80 T14312T0012
NPS 4 / DN 100 T14313T0012
NPS 6 / DN 150 T14314T0012
316 Stainless steel (NACE)
NPS 1 / DN 25 T14311T0022
NPS 2 / DN 50 T14275T0022
NPS 3 / DN 80 T14312T0022
NPS 4 / DN 100 T14313T0022
NPS 6 / DN 150 T14314T0022
11* Cage
Linear(1)
CF8M Stainless steel
NPS 1 / DN 25 34B4136X012
NPS 2 / DN 50 34B5838X012
NPS 3 / DN 80 34B5839X012
NPS 4 / DN 100 34B5840X012
NPS 6 / DN 150 34B5841X012
Whisper Trim™
416 Stainless steel
NPS 1 / DN 25 24A2043X012
NPS 2 / DN 50 24A5707X012
NPS 3 / DN 80 24A5708X012
NPS 4 / DN 100 24A5709X012
NPS 6 / DN 150 24A8174X012
316 Stainless steel (NACE)
NPS 1 / DN 25 24A2043X022
NPS 2 / DN 50 24A5707X022
NPS 3 / DN 80 24A5708X042
NPS 4 / DN 100 24A5709X022
NPS 6 / DN 150 24A8174X022
Key Description Part Number
11* Cage (continued)
Quick Opening, 316 Stainless steel
NPS 1 / DN 25 GF03315X012
NPS 2 / DN 50 GF03319X012
NPS 3 / DN 80 GF03311X012
NPS 4 / DN 100 GF03314X012
NPS 6 /DN 1500 37A7215X032
12* Port Seal
Nitrile (NBR) (standard)
NPS 1 / DN 25 14A6788X012
NPS 2 / DN 50 24A5673X012
NPS 3 / DN 80 24A5658X012
NPS 4 / DN 100 24A5643X012
NPS 6 / DN 150 14A8175X012
Fluorocarbon (FKM)
NPS 1 / DN 25 14A8186X012
NPS 2 / DN 50 25A7412X012
NPS 3 / DN 80 25A7375X012
NPS 4 / DN 100 25A7469X012
NPS 6 / DN 150 14A6996X012
Peruoroelastomer (FFKM)
NPS 1 / DN 25 14A6788X042
NPS 2 / DN 50 24A5673X082
NPS 3 / DN 80 24A5658X052
NPS 4 / DN 100 24A5643X032
NPS 6 / DN 150 14A8175X042
Ethylenepropylene (EPR)
NPS 1 / DN 25 14A6788X022
NPS 2 / DN 50 24A5673X062
NPS 3 / DN 80 24A5658X052
NPS 4 / DN 100 24A5643X052
Nitrile (NBR) (UL®Approved) Type 63EGR
NPS 4 / DN 100 24A5643X062
NPS 6 / DN 150 14A8175X022
13* Seat Ring
416 Stainless steel(1)
NPS 1 / DN 25, 1-5/16 / 33.3 mm 24A6781X012
NPS 2 / DN 50, 2-3/8 / 60.3 mm 24A5670X012
NPS 3 / DN 80, 3-3/8 / 85.7 mm 24A5655X012
NPS 4 / DN 100, 4-3/8 / 111 mm 24A5640X012
NPS 6 / DN 150, 7-3/16 / 183 mm 24A6989X012
NPS 8 x 6 / DN 200 X 150 38A4216X012
316 Stainless steel (NACE)
NPS 1 / DN 25, 1-5/16 / 33.3 mm 24A6781X022
NPS 2 / DN 50, 2-3/8 / 60.3 mm 24A5670X022
NPS 3 / DN 80, 3-3/8 / 85.7 mm 24A5655X022
NPS 4 / DN 100, 4-3/8 / 111 mm 24A5640X022
NPS 6 / DN 150, 7-3/16 / 183 mm 24A6989X022
NPS 8 X 6 / DN 200 X 150 38A4216X022
14* Piston Ring
NPS 1 / DN 25 14A6786X012
NPS 2 / DN 50,
Polytetrauoroethylene (PTFE) (Clear) 14A5675X012
NPS 3 / DN 80, PTFE (Clear) 14A5660X012
NPS 4 / DN 100, PTFE (Clear) 14A5645X012
NPS 6 / DN 150, glass-lled PTFE (Yellow) 14A6985X022
15* Upper Seal
Nitrile (NBR) (standard)
NPS 1 / DN 25 14A6789X012
NPS 2 / DN 50 24A5674X012
NPS 3 / DN 80 24A5659X012
NPS 4 / DN 100 24A5644X012
NPS 6 / DN 150 14A8176X012
*Recommended spare part.
Inconel®is a mark owned by Special Metal Corporation.
UL®is a mark owned by Underwriters Laboratories.
1. Part included in trim package asembly.
- continued -

Types 63EG and 1098-63EGR
16
Key Description Part Number
15* Upper Seal (continued)
Fluorocarbon (FKM)
NPS 1 / DN 25 14A8187X012
NPS 2 / DN 50 25A7413X012
NPS 3 / DN 80 25A7376X012
NPS 4 / DN 100 25A7468X012
NPS 6 / DN 150 14A8185X012
Peruoroelastomer (FFKM)
NPS 1 / DN 25 14A6789X042
NPS 2 / DN 50 24A5674X082
NPS 3 / DN 80 24A5659X052
NPS 4 / DN 100 24A5644X032
NPS 6 / DN 150 14A8176X042
Ethylenepropylene (EPR)
NPS 1 / DN 25 14A6789X022
NPS 2 / DN 50 24A5674X062
NPS 3 / DN 80 24A5659X062
NPS 4 / DN 100 24A5644X052
NPS 6 / DN 150 14A8176X022
16* Valve Plug, heat-treated
416 Stainless steel(1)
NPS 1 / DN 25 14A6780X012
NPS 2 / DN 50 24A6772X012
NPS 3 / DN 80 24A9421X012
NPS 4 / DN 100 24A8182X012
NPS 6 / DN 150 24A6992X012
316 Stainless steel (NACE)
NPS 1 / DN 25 (for Type 63EG) 17B7565X022
NPS 1 / DN 25 (for Type 1068-63EGR) 14A6780X022
NPS 2 / DN 50 24A6772X032
NPS 3 / DN 80 24A9421X022
NPS 4 / DN 100 24A8182X022
NPS 6 / DN 150 24A6992X022
17* Cage O-ring
Nitrile (NBR) (standard)
NPS 1 / DN 25 10A7777X012
NPS 2 / DN 50 10A7779X012
NPS 3 / DN 80 14A5688X012
NPS 4 / DN 100 10A3481X012
NPS 6 / DN 150 18A2556X022
Fluorocarbon (FKM)
NPS 1 / DN 25 10A7778X012
NPS 2 / DN 50 10A7779X022
NPS 3 / DN 80 14A5688X022
NPS 4 / DN 100 10A3483X012
NPS 6 / DN 150 18A2556X032
Peruoroelastomer (FFKM)
NPS 1 / DN 25 10A7777X032
NPS 2 / DN 50 10A7779X132
NPS 3 / DN 80 14A5688X112
NPS 4 / DN 100 10A3481X032
NPS 6 / DN 150 18A2556X062
Ethylenepropylene (EPR)
NPS 1 / DN 25 10A7777X022
NPS 2 / DN 50 10A7779X052
NPS 3 / DN 80 14A5688X082
NPS 4 / DN 100 10A3481X052
NPS 6 / DN 150 18A2556X072
Key Description Part Number
18 Indicator Scale, plastic (used only
with optional travel indicator)
NPS 1 / DN 25 14A6759X012
NPS 2 / DN 50 14A5678X012
NPS 3 / DN 80 14A5662X012
NPS 4 or 6 / DN 100 or 150 14A5647X012
19 Indicator Protector (used only
with optional travel indicator), Zinc-plated steel
NPS 1 and 2 / DN 25 and 50 24B1301X012
NPS 3, 4 or 6 / DN 80, 100 or 150 14A6769X012
20* Flange O-ring
Nitrile (NBR) (standard)
NPS 1 / DN 25 14A6981X012
NPS 2 / DN 50 14A5686X012
NPS 3 / DN 80 1V326906562
NPS 4 / DN 100 14A5688X012
NPS 6 / DN 150 1K879306992
Fluorocarbon (FKM)
NPS 1 / DN 25 14A8188X012
NPS 2 / DN 50 14A5686X022
NPS 3 / DN 80 1V3269X0042
NPS 4 / DN 100 14A5688X022
NPS 6 / DN 150 1V547606382
Peruoroelastomer (FFKM)
NPS 1 / DN 25 14A6981X072
NPS 2 / DN 50 14A5686X072
NPS 3 / DN 80 1V3269X0082
NPS 4 / DN 100 14A5688X112
NPS 6 / DN 150 1K8793X0022
Ethylenepropylene (EPR)
NPS 1 / DN 25 14A6981X032
NPS 2 / DN 50 14A5686X052
NPS 3 / DN 80 1V3269X0062
NPS 4 / DN 100 14A5688X082
NPS 6 / DN 150 1K8793X0012
21* Flange O-ring
Nitrile (NBR) (standard)
NPS 1 / DN 25 10A8931X012
NPS 2, 3 and 4 / DN 50, 80 and 100 10A3800X012
NPS 6 / DN 150 1F262906992
Fluorocarbon (FKM)
NPS 1 / DN 25 10A0811X012
NPS 2, 3 and 4 / DN 50, 80 and 100 1R727606382
NPS 6 / DN 150 1F2629X0012
Peruoroelastomer (FFKM)
NPS 1 / DN 25 10A8931X032
NPS 2, 3 and 4 / DN 50, 80 and 100 10A3800X062
NPS 6 / DN 150 1F2629X0012
Ethylenepropylene (EPR)
NPS 1 / DN 25 10A8931X022
NPS 2, 3 and 4 / DN 50, 80 and 100 10A3800X042
NPS 6 / DN 150 1F2629X0032
22 Flange Nut, plated steel (used
only with optional travel indicator) 14A5693X012
*Recommended spare part.
1. Part included in trim package assembly.
- continued -

Types 63EG and 1098-63EGR
17
Key Description Part Number
23 E-ring (used only with optional travel indicator)
Stainless steel 14A8181X012
1577 steel, heat treated (NACE) 14A8181X022
24 Drive Screw, Stainless steel (4 required) 1A368228982
25 Flow Arrow, Stainless steel - - - - - - - - - - -
26 Nameplate - - - - - - - - - - -
27 Flange Plug (not used with
optional travel indicator), Plated steel
NPS 1 / DN 25, Nitrile (NBR) 14A6983X012
NPS 1 / DN 25, Nitrile (NBR) (NACE) 14A6983X022
NPS 2, 3 or 4 / DN 50, 80 or 100 14A9684X012
NPS 2, 3 or 4 / DN 50, 80 or 100 (NACE) 14A9684X032
NPS 6 / DN 150 (NACE) 14A8178X032
28 Spring Seat (used only with
optional travel indicator)
Plated steel
NPS 1 / DN 25 14A6982X012
NPS 2, 3 or 4 / DN 50, 80 or 100 15A2206X012
NPS 6 / DN 150 14A8177X012
Heat-treated plated steel (NACE)
NPS 1 / DN 25 14A6982X022
NPS 2, 3 or 4 / DN 50, 80 or 100 15A2206X022
NPS 6 / DN 150 14A8177X022
29 Hex Nut, steel (use with
Stainless steel body) (not shown)
NPS 1 / DN 25 (4 required) 1C330635252
NPS 2 / DN 50 (8 required) 1A377235252
NPS 3 / DN 80 (8 required) 1A376035252
NPS 4 / DN 100 (8 required) 1A352035252
NPS 6 / DN 150 (12 required) 1A440935252
31 Pipe Plug
Type 63EG (4 required)
Carbon steel 1E823128982
316 Stainless steel (NACE) 1E8231X0012
416 Stainless steel 1J797328982
Type 63EGR
Plated carbon steel T13718T0012
316 Stainless steel (NACE) 1A767535072
416 Stainless steel 1A767524662
32 NACE Tag (not shown) - - - - - - - - - - -
33 Tag Wire (not shown) (NACE) - - - - - - - - - - -
42 Fitting T21104T0012
43 Backup Ring (2 required)
NPS 1 and 2 / DN 25 and 50 1K786806992
44 O-ring
Nitrile (NBR) 18B3438X012
Fluorocarbon (FKM) 1N430306382
Peruoroelastomer (FFKM) 1N4303X0032
Ethylenepropylene (EPR) 1N4303X0012
45 Pipe plug 1A398524182
Mounting Parts (Figure 12)
Key Description Part Number
22 Pipe Nipple
Zinc galvanized steel
NPS 1, 2, 3 or 4 / DN 25, 50, 80 or 100 1N584226232
Stainless steel (NACE)
NPS 2, 3 or 4 / DN 50, 80 or 100 1N5842X0022
23 Pipe Nipple (used only with Type 63EG)
Zinc galvanized steel 1C488226232
Stainless steel (NACE) 1C488238982
24 Pipe Tee (used only with Type 63EG)
316 Stainless steel 1B8606X0032
316 Stainless steel (NACE) 1P506938982
25 Connector
(2 required with Type 63EG and 1 required
with Type 1098-63EGR) - - - - - - - - - - -
27 Type Y602-12 Vent Assembly, Zinc
with Stainless steel screen 27A5516X012
28 Pilot Supply Tubing, Stainless steel (specify main
valve body size and type number) 0500213809W
29 Pipe Plug
Steel (NACE) 1A767524662
Stainless steel (NACE) 1A767535072
30 Pipe Nipple, galvanized steel
For Type 1098-63EGR only (not shown) 1C488226232
Stainless steel 1C488238982
31 Pipe Bushing (used only with Type 1098-63EGR)
Steel 1C379026232
Stainless steel 1C3790X0012
32 Pipe Plug (uses only with Type 1098-63EGR)
Steel 1A369224492
Stainless steel 1A369235072
33 Actuator Tubing (used only with
Type 1098-63EGR—specify main valve
body size and actuator size)
Stainless steel 0500213809W
35 Pipe Cross, Type 1098-63EGR, plated steel 1L3719X0012
Type 1098 Actuators (Figure 13)
Key Description Part Number
Parts kit (included are keys 5, 6, 7,
56 and 57), size 40 R1098X00402
1 Lower Diaphragm Case
Steel 24A7155X012
Steel (NACE) 24A7155X072
Stainless steel 24A7155X052
2 Upper Diaphragm Case
Zinc-plated steel 24A5680X012
Wrought steel (NACE) 24A5680X062
Stainless steel (NACE) 24A5680X042
3 Bonnet
Steel 33B0301X012
Stainless steel (NACE) 33B0301X052
4 Cap Screw (4 required)
Zinc-plated steel 1D529824052
B8M Zinc-plated steel (NACE) 1D529838992
- continued -
Main Valve (Figure 10 or 11) (continued)

Types 63EG and 1098-63EGR
18
Key Description Part Number
5* Case O-ring
Nitrile (NBR) 1F358106992
Fluorocarbon (FKM) 1F3581X0022
Ethylene Propylene (EPDM) 1F3581X0052
6* Stem O-ring (2 required)
Nitrile (NBR) 1C782206992
Fluorocarbon (FKM) 1K756106382
Ethylene Propylene (EPDM) 1C7822X0052
7* Diaphragm
Nitrile (NBR) 27B9744X012
Fluorocarbon (FKM) 27B9744X022
Ethylene Propylene (EPDM) 27B9744X032
8 Diaphragm Plate
Cast iron 14A5682X012
Heat-treated WCC steel (NACE) GE08466X012
9 Stem Cap Screw
Plated steel 1L545428982
Stainless steel (NACE) 1L545438992
10 Cap Screw, Zinc-plated steel (16 required)
Steel 1E760324052
Stainless steel 1E7603X0072
11 Hex Nut, Zinc-plated steel (16 required)
Steel 1A346524122
Stainless steel 1A3465X0032
12 Stem
17-4PH Stainless steel
NPS 1 / DN 25 main valve body 14A6757X012
NPS 2 / DN 50 main valve body 14A5683X012
NPS 3 / DN 80 main valve body 14A5663X012
NPS 4 / DN 100 main valve body 14A5648X012
17-4PH Stainless steel
NPS 6 / DN 150 main valve body 14A6987X012
NPS 8 x 6 / DN 200 x 150 main valve body 18A4217X022
316 Stainless steel (NACE)
NPS 1 / DN 25 main valve body 14A6757X022
NPS 2 / DN 50 main valve body 14A5683X022
NPS 3 / DN 80 main valve body 14A5663X022
NPS 4 / DN 100 main valve body 14A5648X022
NPS 6 / DN 150 main valve body 14A6987X022
NPS 8 x 6 / DN 200 x 150 main valve body 18A4217X022
NPS 12 x 6 / DN 300 x 150 main valve body 17B6060X012
13 Nameplate, Stainless steel - - - - - - - - - - -
27 Type Y602-12 Vent Assembly 27A5516X012
28 Grease Zerk Fitting, steel 1A3465X0032
54 NACE Tag, 18-8 Stainless steel (not shown) - - - - - - - - - -
55 NACE Tag Wire, 303 Stainless steel (not shown) - - - - - - - - - -
56 Bearing, Nylon (PA) (2 required)
For Nitrile (NBR) Diaphragm 17A7112X012
For Fluorocarbon (FKM)/
Ethylene Propylene (EPDM) Diaphragm 17A7112X022
57 Wiper Ring 15A6002XN12
6358 Series Pilot (Figures 14 and 15)
Key Description Part Number
Parts Kit (included are keys 4, 5, 13, 14, 19,
36, 37 and P590 Series Filter, keys 2 and 7)
Type 6358 parts kit R6358X00012
Type 6358B R6358X00032
Type 6358EB (75 to 200 psig /
5.17 to 13.8 bar) R6358X00052
Type 6358EB (180 to 350 psig /
12.4 to 24.1 bar) R6358X00062
Type 6358EBH R6358X00072
1 Body
Aluminum (NACE) (only available for
Types 6358 and 6358B) 39A0138X012
Stainless steel (NACE) 39A5972X012
2 Spring Case
Types 6358 and 6358B
Aluminum 25A6220X012
Stainless steel 28A9277X012
Types 6358EB and 6358EBH
Stainless steel 27B9722X012
3 Body Plug
Aluminum (NACE) 1B797509032
Stainless steel 1B7975X0052
Stainless steel (NACE) 1B797535072
4* Valve Plug Assembly, Stainless steel plug with
Types 6358 and 6358B
Nitrile (NBR) plug 14B6372X012
Fluorocarbon (FKM) plug 16A2924X012
Types 6358EB and 6358EBH
Nitrile (NBR) plug 18B3427X012
Fluorocarbon (FKM) plug 18B3427X022
5* Diaphragm Assembly
Types 6358 and 6358B
Nitrile (NBR) 15A6216X072
Nitrile (NBR) (NACE) 15A6216X212
Fluorocarbon (FKM) 15A6216X172
Type 6358EB
Nitrile (NBR)
75 to 200 psig / 5.17 to 13.8 bar 18B3428X012
180 to 350 psig / 12.4 to 24.1 bar 18B3428X022
Fluorocarbon (FKM)
75 to 200 psig / 5.17 to 13.8 bar 18B3428X042
180 to 350 psig / 12.4 to 24.1 bar 18B3428X052
Type 6358EBH
Nitrile (NBR) 18B3429X012
Fluorocarbon (FKM) 18B3429X022
6 Connector Cap, Stainless steel
Types 6358 and 6358B
Standard 16A2921X012
NACE 16A2921X022
Type 6358EB or 6358EBH
Standard 14B9813X012
NACE 14B9813X022
*Recommended spare part.
Type 1098 Actuators
(Figure 13) (continued)
- continued -

Types 63EG and 1098-63EGR
19
Key Description Part Number
7 Control Spring
Type 6358
10 to 40 psig / 0.69 to 2.76 bar, Yellow 1E392527022
35 to 125 psig / 2.41 to 8.62 bar, Red 1K748527202
Type 6358B
10 to 30 psig / 0.69 to 2.07 bar, Silver 1B788327022
30 to 60 psig / 2.07 to 4.14 bar, Blue 1B788427022
60 to 125 psig / 4.14 to 8.62 bar, Red 1K748527202
Type 6358EB
85 to 140 psig / 5.86 to 9.65 bar, Green 17B1261X012
130 to 200 psig / 8.96 to 13.8 bar, Blue 17B1263X012
180 to 350 psig / 12.4 to 24.1 bar, Red 17B1264X012
Type 6358EBH
250 to 400 psig / 17.2 to 27.6 bar, Blue 17B1263X012
8 Spring Seat, Zinc-plated steel
Types 6358 and 6358B 1B798525062
Type 6358EB or 6358EBH 17B0515X012
9 Stem Guide
Stainless steel 16A2923X012
Stainless steel (NACE) 16A2923X022
10 Adjusting Screw
Types 6358 and 6358B 10B7192X012
Type 6358EB
75 to 140 psig / 5.17 to 9.65 bar 17B1227X012
130 to 200 psig / 8.96 to 13.8 bar 10B3081X012
180 to 350 psig / 12.4 to 24.1 bar 10B3080X012
Type 6358EBH 10B3080X012
11 Locknut
Types 6358 and 6358B 1A946324122
Type 6358EB or 6358EBH 1D667728982
12 Closing Cap
Types 6358 and 6358B
Aluminum 23B9152X012
Aluminum (NACE) 1H2369X0012
Stainless steel (NACE) 1H2369X0032
Types 6358EB and 6358EBH
Stainless steel (NACE) 24B1301X012
13* Body Plug O-ring, Nitrile (NBR) (for use with
Stainless steel bodies)
Nitrile (NBR) 1F113906992
Fluorocarbon (FKM) 1N463906382
13* Body Plug Gasket (for use with aluminum bodies
on Types 6358 and 6358B only) 1C495704022
14 Valve Plug Spring
Types 6358, 6358EB and 6358EBH
Standard 1E701337022
Stainless steel (NACE) 19A8179X012
Type 6358B
Stainless steel 17A2328X012
Stainless steel (NACE) 19A8179X012
Key Description Part Number
15 O-ring (for Type 6358EB only) 10A7777X012
16 Vent Assembly, Type Y602X1-A12 (2 required) 27A5515X012
17 Machine Screw (6 required)
Type 6358EB
Aluminum 1V4360X0022
Stainless Steel 1V4360X0112
Type 6358EBH T12980T0012
18 Connector Cap O-ring
(for Types 6358EB and 6358EBH)
Nitrile (NBR) 10A0904X012
Fluorocarbon (FKM) 10A0904X032
19* Closing Cap Gasket (for use with
Stainless steel Types 6358 and 6358B) 15A6218X012
20 Restriction Plug (for Type 6358 only)
Standard 1A346128982
NACE 1V7435X0012
20 Restriction
Type 6358B
High Gain 17A7279X012
Medium Gain 17A2029X012
Low Gain 17A7277X012
Types 6358EB and 6358EBH
High Gain
Standard 17A7279X012
Low Gain
Standard 17A2030X012
36* Connector Cap O-ring or Gasket (2 required)
Fluorocarbon (FKM) 1U1716X0012
37 Stem O-ring
Nitrile (NBR) 16A2920X012
Fluorocarbon (FKM) 16A2920X022
38 Lower Spring Seat, thermoplastic
Types 6358EB and 6358EBH 18B1248X012
40 Diaphragm Limiter for Type 6358EB at
180 to 350 psig / 12.4 to 24.1 bar 10B4407X012
42 NACE Tag - - - - - - - - - - -
43 Tag Wire - - - - - - - - - - -
*Recommended spare part.

24
4 15 11 12 1 16 31 13 17
26 2 21 27 9 20 14 3 24 25
2
4
9
15
11 17 12 13 20 14
16 21 27
Types 63EG and 1098-63EGR
20
35A3174-A
25A3169_B
COMPLETE CAST IRON MAIN VALVE ASSEMBLY
QUICK-CHANGE TRIM PACKAGE ASSEMBLY
Figure 10. Type 63EG Main Valve without Travel Indicator Assembly