Emerson Fisher 63EGLP Series User manual

Instruction Manual
D450319T012 Type 63EGLP/63EGLP-16
October 2022
Type 63EGLP and 63EGLP-16 Relief Valve
▲ WARNING
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 process fluid, service
to the unit may be required. Failure to
correct trouble could result in a hazardous
condition. Call a gas service person to
service the unit. Only a qualified person
shall install or service the unit.
Introduction
Scope of the Manual
This instruction manual provides instructions for the
installation, maintenance and parts ordering information
for a Type 63EGLP/63EGLP-16 Relief Valve with a
Type 6358EBLP or 6358EBHLP Pilot.
Product Description
Main Valve Body
The Type 63EGLP/63EGLP-16 pilot operated pressure
relief valve is used for vapor service only. The main valve
uses a quick-change trim package for fast maintenance.
Figure 1. Type 63EGLP/63EGLP-16 Bulk Plant Relief Valve
P1673_1
P3171
Figure 2. Type 6358EBLP Pilot
6358EBLP_1
TYPE 63EGLP NPS 4 / DN 100 FLANGED VERSION
TYPE 63EGLP-16 2 MNPT VERSION

2
Type 63EGLP/63EGLP-16
Pilot Valve
The pilot valve regulator is responsible for the relief valve
assembly’s setpoint start-to-discharge pressure. The
Type 63EGLP/63EGLP-16 relief valve uses a unique
dual-pilot valve assembly that allows maintenance to
one pilot while the alternate pilot continues to supply
pressure to the main valve assembly, providing
overpressure protection at all times when used correctly.
The Type 63EGLP/63EGLP-16 Relief Valve utilizes
one of two pilots: Type 6358EBLP or 6358EBHLP. Any
Type 63EGLP shipped with certifications will use a
specific version of the Type 6358EBLP pilot with required
setpoint secured in place.
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.
Refer to Figure 3. Type 63EGLP/63EGLP-16 Pressure
Relief Valve with dual-pilot assembly has an active pilot
and a standby pilot. Only the active pilot senses the
changes in the inlet pressure. The handle assembly is
always pointing away from the active pilot.
As long as the inlet pressure is below the set pressure,
the 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 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.
Specifications
Specifications for the Type 63EGLP/63EGLP-16 construction is listed on Specifications section and Tables 1 to 3.
The specifications for a given construction as it originally comes from the factory are stamped on nameplates
located on the main valve body. The pilot valve set pressure appears on the pilot spring case.
Available Constructions
Type 63EGLP/63EGLP-16 with two
Type 6358EBLP Pilots
Type 63EGLP/63EGLP-16 with two
Type 6358EBHLP Pilots
Main Valve Body Size(1)
Type 63EGLP: NPS 4 / DN 100
Type 63EGLP-16: 2 MNPT
End Connection Style
Type 63EGLP: CL300 RF, NPT
Type 63EGLP-16: MNPT
Maximum Relief Inlet Pressure(2)(3)
Type 63EGLP: 400 psig / 27.6 bar
Relief Set Pressure Ranges(2)
See Table 1a and 1b
Main Valve Port Diameter:
NPS 4 / DN 100, CL300 RF: 4.38 in. / 111 mm
2 MNPT: 2.38 in. / 60 mm
Valve Plug Travel:
NPS 4 / DN 100, CL300 RF: 2.00 in. / 51 mm
2 MNPT: 1.13 in / 29 mm
Main Valve Flow Characteristic
Linear
Main Valve Flow Direction
Up through seat ring and out through cage
Main Valve Material
WCB Steel
Maximum Temperature Capabilities(2)(5)
Nitrile (NBR): -20 to 180°F / -29 to 82°C
Approximate Weights (including pilots)
NPS 4 / DN 100, CL300 RF: 178 lbs / 81 kg
2 MNPT: 55 lbs / 25 kg
1. 4x3 in. ange reducer assembly available for 3 in. ange connections. See Parts List.
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 (on UL® product) or the main valve (on ASME product) starts-to-discharge.
5. Product has passed Fisher™ performance testing for Start-to-Discharge and reseal at -40ºF / -40ºC.
UL®is a mark owned by Underwriters Laboratories.

3
Type 63EGLP/63EGLP-16
UL®is a mark owned by Underwriters Laboratories.
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
63EGLP/
63EGLP-16
6358EBLP
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
6.66
7.47
3.70
3.85
4.22
94.0
97.8
107
6358EBHLP 250 to 375 17.2 to 25.9 17B1263X012 Blue 0.262 6.66 3.85 97.8
1. Set pressure plus buildup should not exceed maximum di󰀨erential pressure of 400 psig / 27.6 bar.
Table 2. Relief Set Pressure Ranges
Table 3. Minimum and Maximum Dierential Pressure
BODY SIZE
MAIN VALVE
SPRING RANGE
MAIN VALVE
SPRING
PART
NUMBER
MAIN VALVE
SPRING
COLOR
TYPE 63EGLP/63EGLP-16
Minimum Di󰀨erential
Pressure Required
For Full Stroke
Maximum
Di󰀨erential
Pressure
psig bar psig bar psig bar
NPS 4 / DN 100 85 to 375 5.9 to 25.9 14A6634X012 Red 55 3.8 400 27.6
2 MNPT 85 to 375 5.9 to 27.6 14A6628X012 Red 90 6.2 400 27.6
Table 1a. Type 63EGLP Bulk Plant Relief Valves Flow Rate for NPS 4 / DN 100 CL300 RF
Table 1b. Type 63EGLP-16 Bulk Plant Relief Valves Flow Rate for 2 MNPT
TYPE NUMBER CONTAINER CONNECTION
DISCHARGE SET PRESSURE REPLACEMENT
PILOT TYPE
NUMBER
FLOW RATE,
SCFM / SCMM OF AIR
psig bar Per UL®-132(1) ASME Sect VIII,
Div. I(2)
63EGLP-250
CL300 RF(3),
4 in.
250 17.2 6358EBLP-250 38,794 / 1099 N/A
63EGLP-EB1 85 to 140 5.9 to 9.7 6358EBLP-1
N/A 11,929 to 47,164 /
338 to 1336
63EGLP-EB2 130 to 200 9.0 to 13.8 6358EBLP-2
63EGLP-EB3 180 to 350 12.4 to 24.1 6358EBLP-3
63EGLP-EBH 250 to 375 17.2 to 26.0 6358EBHLP
1. Capacity recorded at 20% over set pressure.
2. Capacity based on 20% over set pressure. ASME Flow Rate (SCFM Air) = 111.78 x [(Set Pressure (psig) x 1.2) + 14.7] .
3. 4x3 in. ange reducer assembly available for 3 in. ange connections. See Parts List.
Note: Flow Capacity must be reduced if ange reducer assembled onto unit. Consult Emerson application engineers for ow rate reduction estimates.
TYPE NUMBER DISCHARGE SET PRESSURE REPLACEMENT
PILOT VALVE TYPE LISTING / APPROVAL FLOW RATE, AIR
psig bar SCFM SCMM
63EGLP-16-250 250 17.2 6358EBLP-250 UL and ASME Sect VIII, Div. I 11,221(2) 317
63EGLP-16-265 265 18.3 6358EGLP-265 UL and ASME Sect VIII, Div. I 11,805(2) 334
63EGLP-16-EB1 85 to 140 5.9 to 9.7 6358EBLP-1
ASME Section VIII, Div. I 3,709 to 14,768(3) 105 to 418(3)
63EGLP-16-EB2 130 to 200 9.0 to13.8 6358EBLP-2
63EGLP-16-EB3 180 to 350 12.4 to 24.1 6358EBLP-3
63EGLP-16-EBH 250 to 375 17.2 to 26.0 6358EBHLP
1. All are 2 NPT units with male union coupling included for inlet connection during installation.
2. Capacity based on 20% over set pressure, UL-132 Standard.
3. Capacity based on 20% over set pressure. ASME Flow Rate (SCFM Air) = 31.78 x [(Set Pressure (psig) x 1.2) + 14.7] .

4
Type 63EGLP/63EGLP-16
Figure 3. Type 63EGLP Operational Schematics
INLET PRESSURE
OUTLET (EXHAUST) PRESSURE
ATMOSPHERIC PRESSURE
LOADING PRESSURE
TYPE 63EGLP AT NORMAL CONDITION
(BOTH MAIN VALVE AND ACTIVE PILOT ARE CLOSED)
TYPE 63EGLP AT OVERPRESSURE CONDITION
(ACTIVE PILOT DISCHARGES LOADING PRESSURE, MAIN VALVE
DISCHARGES EXCESS INLET PRESSURE)
ACTIVE
PILOT
ACTIVE
PILOT
SPRING
DIAPHRAGM VALVE
INACTIVE
PILOT
INACTIVE
PILOT
HANDLE ASSEMBLY HANDLE ASSEMBLY
HANDLE ASSEMBLY IS ALWAYS POINTING AWAY FROM THE ACTIVE PILOT.
ROTATION OF HANDLE ALLOWS CHANGING OF ACTIVE PILOT.
ACTIVE
PILOT
ACTIVE
PILOT
INACTIVE
PILOT INACTIVE
PILOT
HANDLE ASSEMBLY HANDLE ASSEMBLY
VALVE PLUG
MAIN SPRING
PILOT
DISCHARGE MAIN VALVE
DISCHARGE
BULK STORAGE TANK BULK STORAGE TANK
NOTE: TYPE 63EGLP OPERATIONAL SCHEMATICS THE SAME FOR TYPE 63EGLP-16.

5
Type 63EGLP/63EGLP-16
Figure 4. Type 6358EBLP Operational Schematics
INLET PRESSURE
OUTLET (EXHAUST) PRESSURE
ATMOSPHERIC PRESSURE
LOADING PRESSURE
EXPANDED VIEW OF THE TYPE 6358EBLP RELIEF PILOT DIAPHRAGM ASSEMBLY AND VALVE PLUG
DIAPHRAGM
ASSEMBLY
TO EXHAUST PORT
LOWER PORTION
OF VALVE PLUG
UPPER PORTION
OF VALVE PLUG FIXED
RESTRICTION
TO MAIN VALVE
DIAPHRAGM
HOLLOW PASSAGE
IN VALVE PLUG STEM
As the inlet pressure drops below the set pressure, the
pilot control spring closes the pilot valve plug and the pilot
exhaust to atmosphere stops. Force from the main spring,
along with pilot loading pressure, pushes the plug onto
the seat, producing tight shutoff.
Installation
▲ WARNING
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 63EGLP/63EGLP-16 Relief
Valve where:
• Service conditions are within unit
capabilities (including those given in
the Specications section)
• Service conditions are within
applicable codes, regulations
or standards
Additionally, physical damage to the
relief valve could break the pilot o󰀨 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.
1. Call a qualified personnel and use proper equipment
when installing, operating and maintaining relief
valves. 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.
• To install a flanged body (Type 63EGLP), use
suitable line gaskets and good bolting practices.
Main body gasket and studs and nuts are not
included. To order, see parts list.
• To install an MNPT body (Type 63EGLP-16),
use suitable thread sealant and good threading
practices. Please ensure hex nipple (Key 48)
between valve body and tank is tightened with
appropriate tools. Thread sealants are
not included.

6
Type 63EGLP/63EGLP-16
Figure 5. Pilot Port Functions (bottom view)
Figure 6. Type 63EGLP-16, 2 MNPT
PORT C
(LOADING)
PORT A
(EXHAUST)
PORT D
(CONTROL)
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.
TYPE 63EGLP-16 WITH TOP VIEW FOR 2 MNPT
TYPE 63EGLP-16 BOTTOM WITH INTERNAL SECTION FOR 2 MNPT
1/4 NPT PLUG IN SIDE TAP
15A6002XW22
TUBING
3X 11A3740 (2 MNPT NIPPLE)

7
Type 63EGLP/63EGLP-16
2. For Type 63EGLP: Use the lifting sling (key 50)
wrapped around outlet flange (as shipped) to lift the
Type 63EGLP when installing the unit. After installing
the valve on the tank, install rain cap (key 51)
on outlet flange. Ensure that the valve is in the
vertical-up orientation with flow through it matching
the direction of the arrow on the main valve body. An
upstream control line is not required because of the
integral pilot supply tubing.
For 63EGLP-16: Carefully lift the Type 63EGLP-16,
avoid lifting by the pilot assembly. After installing
the valve on the tank, ensure the valve is in the
vertical-up orientation with flow through it matching
the direction of the arrow on the main valve body.
Exercise care to ensure that the hex nipple (key 48)
at the valve body is not cross threaded with tank
coupling. An upstream control line is not required
because of the integral pilot supply tubing.
▲ WARNING
Type 63EGLP/63EGLP-16 Relief Valves
vent gas from the main valve outlet and
from the pilot exhaust. In hazardous or
ammable gas service, personal injury,
death or property damage may occur
due to re 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
ow restriction. Protect the pilot vent and
exhaust piping from condensation or
debris that can clog it.
3. If system operation is necessary during maintenance
or inspection, one pilot valve can be isolated while
the other pilot valve actively loads the main valve
body to continuously protect the system. If service
to the main valve body is required, remove the
upstream pressure.
4. Install a relief valve 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 vent assembly (key 16)
remains in the pilot exhaust port (connection A,
Figure 5), 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 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. The set pressure of a unit is adjusted by changing the
control spring compression on the pilot valve.
8. The pilot valve is factory-set for the pressure set-point
specified on the order. Some certifications require the
adjusting assembly be protected from tampering and
will come factory-installed with a tamper-evident wire
seal. These units are not adjustable.
Dual Pilot-Valve Active Monitoring
The Type 63EGLP/63EGLP-16 Pressure Relief Valve
with dual-pilot assembly is shipped from the factory with
the handle assembly, (key 48), pointing to one pilot valve,
or the other. In this operating mode, it has an active
pilot and a standby pilot. Only the active pilot senses the
changes in the inlet pressure. The handle assembly is
always pointing away from the active pilot.
The Type 63EGLP/63EGLP-16 Bulk Storage Relief Valve
can be adjusted for use with BOTH pilot valves active,
by placing the 3-way ball valve selector handle (key 48)
in the middle position. When the 3-way selector valve
handle is in the middle position, then both pilot valves are
in an active mode to sense tank (upstream) pressure and
will operate normally for start-to-discharge and reseal of
the main valve.
While operating in this mode with the 3-way selector
valve handle in the middle position, even if one pilot
valve’s exhaust discharge port is blocked and unable
to discharge loading pressure, the alternate pilot will
continue to actively sense upstream (tank) pressure and
begin to discharge loading pressure per its set-point.
This allows the main valve body to begin to relieve tank
pressure at the alternate pilot valve’s set-point.
The attached figure represents the pilot valve assembly
and 3-way selector ball valve handle in the above
described middle position.
To check for proper positioning and orientation of the
3-way selector valve in the middle position, see Figures
7, 8 and 9 for the location of the “T” symbol on the small
valve stem of both 3-way ball valves. The small “T”
symbol on the ball valve stems must indicate the same
direction and flow path to all 3 valve ports on a given
3-way valve, while the handle assembly (key 48) is in the
middle position.

8
Type 63EGLP/63EGLP-16
Startup and Adjustment
The relief valve is factory set at the set-point pressure
requested. With proper installation completed,
slowly increase pressure while using gauges to
monitor pressure.
Adjustment
Certain congurations or approvals require the pilot to
be secured from adjustment. For assemblies allowing
adjustment, key numbers are referenced in Figure 13. To
adjust relief set pressure of Type 6358EBLP relief pilot,
perform the following procedures.
1. Remove the closing cap (key 12) and loosen the
locknut (key 11).
2. Turn the adjusting screw (key 10) clockwise to
increase or counterclockwise to decrease the relief
set pressure.
3. Introduce pressure to the relief valve slightly higher
than the desired relief set pressure.
Monitor inlet pressure to the relief valve with a
pressure gauge. The relief valve should start
releasing excess pressure as soon as the inlet
pressure to the relief valve exceeds the desired relief
set pressure.
4. If the desired relief set pressure is achieved, tighten
the locknut to lock the adjusting screw and install the
closing cap.
5. Apply wire seal or other adjustment protection
if available.
Shutdown
1. Remove all pressure from the upstream system
or tank.
2. Release all pressure from the main valve and pilot
by opening an upstream vent valve or by slightly
loosening one of the compression ttings on the pilot
supply tubing or actuator tubing until the trapped
pressure starts bleeding out.
3. Once all pressure is released, nger tighten the
compression tting, then use appropriate wrench to
turn the nut to 1/4 turn.
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.
Figure 8. Type 63EGLP 3-Way Ball Valve Stem Check
Figure 9. Type 63EGLP 3-Way Ball Valve Stem Check in
Dual-Pilot Active Monitoring
Figure 7. Type 63EGLP with Dual Pilot-Valve Active Monitoring,
Center Handle Position
NOTE: TYPE 63EGLP-16 THE SAME CONSTRUCTION WITH A SMALLER HANDLE.

9
Type 63EGLP/63EGLP-16
Visually inspect the physical condition of the relief valve at
least once a year to check if there are leaks or damage to
the relief valve. If the relief valve or pilots show any visible
damage, corrosion, evidence of tampering or if water,
dirt or debris is found in the discharge side of the relief
valve, the valve must be cleaned, repaired and retested
or replaced immediately. Observe the rain cap (key 51)
periodically. If it is no longer on valve outlet ange, inspect
the unit.
It is recommended to switch the lever/handle assembly
yearly to activate alternate pilot. It is also recommended
to replace both pilots valves every 10 years. Since the
elastomer seals in a relief valve are subject to normal
deterioration, Fisher™ recommends that a relief valve
not be used for longer than 15 years without repair,
retest or replacement. Earlier repair or replacement
may be required due to severe service conditions or
code requirements. If leakage is observed from the
relief valve during inspection, the main seals should be
replaced and the relief valve retested or the relief valve
replaced immediately.
Retesting may include:
a.) Testing both pilot valves for start-to-discharge;
b.) Testing the valve for internal , or by-pass, leakage.
The test for leakage can be done by spraying the outlet
with soap solution and observe for bubbles. If bubbles are
present then the valve will be to be repaired or replaced
as necessary. A more accurate test involves the use of
a gas leak detector device. Use this device by placing it
around the outlet of the valve. If the device detects a gas
leak, replace the main seals or entire valve as necessary.
Main seal replacement within the main body is only
required if the valve does not pass a leakage test. If the
main seals maintane a bubble-tight seal then they do
not require replacement. At 15 years from the valve’s
date of manufacturing, or before, the valve would have
to be tested for main valve seat leakage. If there is no
leakage the valve can remain in service without having to
depressurize the tank, or replace the main valve body.
Note
During testing or leak checking of a given
pilot valve, confirm the lever/handle is
completely pointed toward the inactive
pilot. Do not have it pointed toward the
active pilot or in between the two pilots.
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 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 eld changes in equipment, materials,
service conditions or pressure settings.
▲ WARNING
To avoid personal injury and
equipment damage, isolate the valve
from all pressure. Cautiously release
pressure from the valve before
attempting disassembly.
Type 63EGLP/63EGLP-16 Dual-Pilot
Valve Assembly
To Change Out A Pilot
Note
This section only applies to
Type 63EGLP/63EGLP-16 assemblies
received with two pilots. If your assembly
only has one pilot, refer to section To
Install an Additional Pilot. Replacing one of
the two pilots requires the following tools
and Fisher™ Key Numbers:
• Wrench Sizes (recommend open-ended or
adjustable): 11/16 in.
• Required Fisher Key Numbers
(QTY): Matching Type 6358EBLP or
6358EBHLP Pilot (x1)
• Option Key Numbers (QTY): 49 (x2)
To easily identify the active pilot, check the
direction of handle assembly. The handle
assembly is always pointing away from the
active pilot. See Figure 3.

10
Type 63EGLP/63EGLP-16
△ CAUTION
Only apply thread sealant to Male NPT
threads. Sealant applied to female pipe
connections or to compression ttings
could inhibit the seal and result in a leak or
product contamination.
1. The Type 6358EBLP pilot ships preassembled with
a 1/4 in.-by-Compression elbow (key 43, Figure 15)
oriented in the correct direction in Port C (Figure 5). If
your pilot does not have this elbow installed, please
contact your local Fisher LP-Gas Distributor to obtain
the correct part.
△ CAUTION
A small amount of vapor release may
occur during steps 2 through 4. If the main
valve or alternate pilot continuously vents
while conducting steps 2 through 4, return
the handle to the previous position and
contact your local LP-Gas distributor.
2. Locate the wire seal securing the sliding lock
mechanisms on the ball valve handle and remove
it. The wire seals are factory installed to discourage
tampering from untrained professionals and must be
replaced upon completion.
3. The 3-way ball valves are factory-equipped with
positive stops to prevent over-rotation. In the event
these stops have been removed, do not over-rotate
the handle assembly as this may cause improper
valve operation. Slowly rotate the handle assembly
(key 48) of the 3-way valves until the handle
assembly points to the pilot that will be removed. The
handle assembly should be oriented such that the
sliding handle locks are capable of sliding into place.
4. Gently loosen the 11/16 in. compression fitting
securing the stainless steel line to the inactive pilot to
bleed off trapped pressure.
△ CAUTION
If excessive amounts of process
uid continue to discharge out of the
tting, secure the tting and conrm the
ball valve handle orientation is correct.
If the orientation is correct and you
are unable to completely depressurize
the inactive pilot, contact your local
LP-Gas distributor for additional support
as the ball valve assembly may need to
be replaced.
5. Once the inactive pilot is completely depressurized,
remove the compression fitting and move the
stainless steel tube out of the way.
Note
Loosening the compression tting on
the other end of the tube may make this
step easier.
6. Hold the remaining pipe nipple (key 36) in place with
a pipe wrench and remove the pilot.
7. Clean the exposed pipe nipple and apply new thread
sealant before threading the new pilot onto the nipple.
Make sure the pipe wrench is utilized to secure the
pipe nipple. Install the pilot such that the pipe nipple
threads into Port D. Continue tightening until snug,
tightening further until the pilot adjusting screw
points in the same direction as the outlet of the main
valve body.
8. Re-attach the 11/16 in. compression fitting assembly
on the stainless tube connecting the pilot and 3-way
ball valve. Finger tighten the compression fitting
assembly, then use appropriate wrench to turn the
nut 1/4 turns (assuming the ferrule is already clamped
to the tube).
9. Slowly reverse step 3, taking note of the preceding
cautions. Once the handle assembly points away
from the newly installed pilot, the new pilot should be
active and pressurized. Perform a leak check on all
connections and fittings.
a. At this time you may choose to continue using
the new pilot as the main control pilot or rotate
the handle assembly to utilize the alternate pilot
as the main control pilot.
10. The reserve pilot should be purged of pressure to
prolong service life and minimize the risk of vapor
reliquefying in the pilot and the piping. Refer to step 4
to properly purge the reserve pilot. After purging the
reserve pilot, nger tighten the compression tting,
then use appropriate wrench to turn the nuts to 1/4
turn. Install the wire seals.

11
Type 63EGLP/63EGLP-16
To Install an Additional Pilot
Note
This section only applies to
Type 63EGLP/63EGLP-16 assemblies
received with one pilot. If your assembly
has two pilots, skip to section To Change
Out a Pilot. Installing the additional pilot
requires the following tools and Fisher™
Key Numbers:
• Wrench Sizes (recommend open-
ended or adjustable): 9/16 in., 11/16 in.
and 7/8 in.
• Pipe Wrench: recommend maximum
length: 12 in.
• Required Fisher Key Numbers
(QTY): 36 (x1), 43 (x1), 44 (x1), Matching
Type 6358EBLP Pilot (x1)
• Fisher Key Numbers (QTY): 49 (x2)
1. The Type 6358EBLP Pilot ships preassembled with
a 1/4 in.-by-Compression elbow (key 43, Figure 15)
in Port C oriented in the same direction as the spring
case. If your pilot does not have this elbow installed,
please contact your local Fisher LP-Gas Distributor to
obtain the correct part.
2. Confirm that the handle assembly is pointing AWAY
from the ACTIVE pilot. The handle assembly has
a sliding lock mechanism that is wire sealed at the
factory before shipment. If the wire seal has been
damaged or is missing, proceed with caution.
△ CAUTION
Product may be trapped between the
3-way valve seal and the pipe plugs. Use
caution when proceeding to step 3.
3. Secure the first 3-way valve with an appropriate 7/8
in. wrench. Using an appropriate 9/16 in. wrench,
slowly remove the 1/4 NPT pipe plug. If any pressure
is trapped between the 3-way valve and the plug,
it should quickly dissipate. If pressure continues to
bleed, reinstall the plug and contact your authorized
Fisher LP-Gas Distributor as the 3-way valve may
need replacing.
4. Repeat step 3 on the remaining 3-way valve.
△ CAUTION
Only apply thread sealant to Male NPT
threads. Sealant applied to female pipe
connections or to compression ttings
could inhibit the seal and result in a leak or
product contamination.
5. Clean the FNPT threads on the 3-way valves. Apply
thread sealant to one end of the 6 in. Male NPT pipe
nipple (key 36) and install the pipe nipple into the
lower 3-way valve Female NPT connection. Tighten it
in place with an appropriately size pipe wrench.
6. Apply thread sealant to the Male NPT end of one of
the 1/4 in.-by-Compression elbows (key 43). Using
an appropriate 5/8 in. wrench, install the compression
fitting in the Female NPT outlet of the upper 3-way
valve until snug, tightening until the compression
fitting is facing in the same direction as the main
valve outlet.
7. Apply thread sealant to exposed end of the
6 in. Male NPT pipe nipple. To install the new pilot,
thread pilot Port D onto the pipe nipple until snug,
tightening until the spring case and compression
fitting are oriented in the same direction as the main
valve outlet.
8. Orient the stainless steel tubing (key 44) to
connect the compression fitting on the pilot to
the compression fitting on the 3-way valve. Finger
tighten the compression fitting assembly, then use
appropriate 11/16 wrench to turn the nut 1/4 turns
(assuming the ferrule is already clamped to the tube).
△ CAUTION
A small amount of vapor release
may occur during steps 10 and 11. If the
main valve or alternate pilot continuously
vents while conducting steps 10 or 11,
return the handle to the previous position
and contact your local LP-Gas distributor.
9. Locate the wire seals securing the sliding lock
mechanisms on the 3-way valve handle and
remove them. The wire seals are factory installed to
discourage tampering from untrained professionals
and should be replaced upon completion.

12
Type 63EGLP/63EGLP-16
10. The 3-way ball valves are factory-equipped with
positive stops to prevent over-rotation. In the event
these stops have been removed, do not over-rotate
the handle assembly as this may cause improper
valve operation. Slowly rotate the handle assembly
(key 48) of the 3-way valves until the handle
assembly points away from the newly installed pilot.
The handle assembly should be oriented such that
the sliding handle locks are capable of sliding into
place. Once the handle assembly points away from
the newly installed pilot, the new pilot should be
active and pressurized. Perform a leak check on all
connections and fittings.
a. At this time you may choose to continue using the
new pilot as the main control pilot or rotate the
handle assembly to utilize the alternate pilot as the
main control pilot.
11. The reserve pilot should be purged of pressure to
prolong service life and minimize the risk of vapor
reliquefying in the pilot and the piping. Gently
loosen the 11/16 in. compression fitting securing
the stainless steel line to the inactive pilot to bleed
off trapped pressure. After purging the inactive
pilot, finger tighten the compression fitting, then use
appropriate wrench to turn the nuts to 1/4 turn. Install
the wire seals.
Type 63EGLP/63EGLP-16 Main Valve Body
△ CAUTION
The Main Valve Assembly can only be
repaired or modied where local codes or
restrictions allow. Check with your LP-Gas
distributor or local Authority Having
Jurisdiction for information on restrictions
that may apply.
Replacing Trim Sealing Parts
Perform this procedure if inspecting, cleaning or replacing
individual parts in the trim package, by using Repair
Kit Part No. R63EGLPX012. Key numbers for the
Type 63EGLP/63EGLP-16 Main Valve are referenced in
Figure 11.
Note
All disassembly, trim sealing parts change
and reassembly steps in this section
may be performed with the relief valve
still connected to the upstream piping, if
upstream pressure is removed. The pilot
and its pipe nipple must be removed with
the Type 63EGLP/63EGLP-16 Main Valve.
Access to the spring (key 9) or ange
O-ring (key 21) in step 1 can be gained
without removing the body ange (key 2).
W3012_1 W2772_1
Figure 10. Replacing Trim Parts on Site Using Body as Holding Fixture
LIFTINGTHEENTIRETRIMPACKAGE UNSCREWING OF CAGE FROM
BODY FLANGE
FLIPPING THE BODY FLANGE OVERAND
ANCHORING IT ON THE VALVE BODY

13
Type 63EGLP/63EGLP-16
1. Remove the pilots and pilot pipe nipples from the
valve body. Remove the body flange plug (key 27)
and the spring (key 9) and attached parts.
2. Remove the cap screws (key 3) and pry the body
flange (key 2) 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 10, 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 (key 2). For leverage, a wrench
handle or similar tool may be inserted into the orifice
slots (Figure 10) and a strap wrench may be wrapped
around the cage or a soft bar may be inserted
through the 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 screw-driver into the pre-cut fold over area of
the piston ring and unfold the piston ring.
Note
Installing parts without lubrication or
overtightening parts may a󰀨ect shuto󰀨.
5. Replace and lightly lubricate the gasket (key 4),
cage O-ring (key 17), port seal (key 12) and upper
seal (key 15). Ensure that port and upper seals are
installed in their retaining slots with the grooved
sides facing out. Also lubricate any other surfaces
as necessary for ease of installation. For proper
operation, a Type 63EGLP/63EGLP-16 valve plug
must have pipe plugs (key 31) installed in all four
balancing ports.
Note
When tightening threaded parts together,
use a method of tightening, backing o󰀨
and tighten again until the union is snug.
6. Remove and replace 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),
install the cage (key 11) plus upper seal (key 15) and
cage O-ring (key 17) into the body flange and then
install the seat ring (key 13) plus port seal (key 12)
into the cage. Use the valve body as a holding fixture
during this step as shown in Figure 10 and insert a
wrench handle or similar tool into the orifice slots for
leverage when tightening the orifice and cage.
Note
When installing the main valve Repair
Kit, align the body ange and valve body
side tappings.
7. Remove the upside-down body flange (key 2) if it
was anchored on the body. Lightly lubricate the cage
seating surfaces of the valve body web and the body
flange. Install the body flange on the body (key 1)
and secure it evenly with the cap screws or stud bolts
(key 3). With a Type 63EGLP main valve, reinstall
the 3-way valve and its pipe nipple and connect the
pilot tubing.
Type 63EGLP/63EGLP-16 Main Valve
Cap Screw (key 3) Torque
SIZE TORQUE
Ft-Lbs N•m
NPS 4 / DN 100 160 to 200 217 to 271
2 MNPT 55 to 70 75 to 95
8. Install the spring (key 9). Remove and replace the
flange O-ring (key 21) on the flange plug (key 27).
Install the flange plug; if necessary, compress the
spring enough to ensure secure engagement of plug
and body flange threads before final tightening of
the plug.
Parts Ordering
Each Type 63EGLP/63EGLP-16 Relief Valve is assigned
an FS number which can be found on the nameplates.
Refer to this number when contacting your local Sales
O󰀩ce 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.
*Recommended spare part.
1. Contact factory for details. Gasket and bolts and nuts are not included. Valve to reducer bolts and nuts mounting kit: MK63EGLP002. 3 in. Spiral Wound Gasket: T1056138992.

14
Type 63EGLP/63EGLP-16
Parts List
Main Valve Body (Figure 11)
Key Description Part Number
Main Valve Parts kit (included are keys 4, 12,
14, 15, 17, 20 and 21) R63EGLPX012
Tank to Valve studs and
nuts mounting kit (not included) MK63EGLP001
4 in. Spiral Wound Gasket (not included) ERSA03240A0
1 Valve Body, WCB Steel ERAA02116A0
2 Body Flange
CF8M Stainless steel, ENC, heat-treated 24A9032X012
3 Cap Screw, Zinc-plated steel (8 required) 1A485724052
4* Gasket, composition 14A5650X082
9 Spring, Steel 14A6634X012
11* Cage, Linear, heat-treated Stainless steel 34B5840X012
12* Port Seal, Nitrile (NBR) 24A5643X062
13* Seat Ring, 416 Stainless steel 24A5640X012
14* Piston Ring
Polytetrafluoroethylene (PTFE) (Clear) 14A5645X022
15* Upper Seal, Nitrile (NBR) 24A5644X062
16* Valve Plug, heat-treated 416 Stainless steel 24A8182X012
17* Cage O-ring, Nitrile (NBR) 10A3481X082
20* Plug O-ring, Nitrile (NBR) 14A5688X132
21* O-ring, Nitrile (NBR) 10A3800X162
24 Drive Screw, Stainless steel (2 required) 1A368228982
25 Flow Arrow, Stainless steel 1V105938982
26 Nameplate - - - - - - - - - - -
27 Plug (not used with optional travel indicator)
Zinc-plated steel 14A9684X012
31 Pipe Plug, Plated steel (4 required) 1E823128982
45 Pipe Plug, Carbon steel (not shown) 1A398524182
46 Deflector, Plated-Carbon steel (not shown) T13091T0012
47 Drive Screw, Plated-Carbon steel
(2 required) (not shown) 1A676728992
Type 63EGLP-16 for 2 MNPT (Figure 12)
Key Description Part Number
1 2 NPT Body ERAA49242A0
2 Body Flange 25A2254X012
3 Cap Screw 1A453324072
4 Gasket 14A5685X112
9 Spring 14A6628X0A0
11 Cage GF03319X012
12 Portal Seal, lower, Nitrile (NBR) 24A5673X022
13 Seat Ring, 416 Stainless steel 24A5670X012
14 Piston Ring 14A5675X112
15 Port Seal, upper, Nitrile (NBR) 24A5674X022
16 Valve Plug, 416 Stainless steel 24A6772X012
17 O-ring, Cage, Nitrile (NBR) 10A7779X062
20 O-ring, Plug, Nitrile (NBR) 14A5686X062
21 O-ring, Plug, Nitrile (NBR) 10A3800X162
27 Plug 14A9684X242
31 Pipe Plug, 416 Stainless steel 1E823128982
45 Pipe Plug 1A767524662
48 Male Hex Coupling 15A6011Z032
Types 6358EBLP and 6358EBHLP Pilot
Valves (Figure 13)
Key Description Part Number
1 Pilot Body, CF8M Stainless steel 39A5972X012
2 Spring Case, Stainless steel 27B9722X012
3 Body Plug, Stainless steel 1B7975X0052
4* Valve Plug Assembly, Stainless steel 18B3427X072
5* Diaphragm Assembly,
Type 6358EBLP, Nitrile (NBR)
85 to 200 psig / 5.8 to 13.8 bar 18B3428X012
180 to 350 psig / 12.4 to 24.1 bar 18B3428X082
Type 6358EBHLP, Nitrile (NBR) 18B3429X012
6 Connector Cap, Stainless steel 14B9813X012
7 Control Spring
Type 6358EBLP
85 to 140 psi / 5.8 to 9.7 bar 17B1261X012
130 to 200 psi / 9.0 to 13.8 bar 17B1263X012
180 to 350 psi / 12.4 to 24.1 bar 17B1264X012
Type 6358EBHLP
250 to 450 psi / 17.2 to 27.6 bar 17B1263X012
Types 6358EBLP and 6358EBHLP Pilot
Valves (Figure 13) (continued)
Key Description Part Number
8 Spring Seat, Zinc-plated steel 17B0515X012
9 Stem Guide, Stainless steel 16A2923X012
10 Adjusting Screw
Type 6358EBLP
85 to 140 psi / 5.8 to 9.7 bar 17B1261X012
130 to 200 psi / 9.0 to 13.8 bar 17B1263X012
180 to 350 psi / 12.4 to 24.1 bar 17B1264X012
Type 6358EBHLP
250 to 450 psi / 17.2 to 27.6 bar 17B1263X012
11 Locknut 1D667728982
12 Closing Cap, Plastic 24B1301X012
13* Body Plug O-ring, Nitrile (NBR) 1F113906992
14 Valve Spring 1E701337022
15 O-ring 10A7777X012
16 Vent Assembly (2 required) Type Y602X1-A12U
17 Machine Screw (6 required) (not shown)
Type 6358EBLP 1V4360X0022
Type 6358EBHLP T12980T0012
18 Connector Cap O-ring, Nitrile (NBR) 10A0904X042
20 Restriction, High Gain 17A7279X012
36* Gasket, Nitrile (NBR) 1U1716X0062
37 Stem O-ring, Nitrile (NBR) 16A2920X072
38 Lower Spring Seat 18B1248X022
40 Diaphragm Limiter for Type 6358EBLP
at 180 to 350 psig / 12.4 to 24.1 bar 10B4407X012

15
Type 63EGLP/63EGLP-16
Type 63EGLP, NPS 4 / DN 100, CL300 RF
Mounting Parts (Figure 14)
Key Description Part Number
Flange Reducer 4X3 in. CL300 RF
for 3 in. flange connections(1) ERAA07958A0
36 Pipe Nipple (2 required) 1C2100X0012
37 Pipe Nipple 1N5842X0022
38 Pipe Nipple 1F3948X0012
39 Pipe Nipple 1N5842X0022
40 Pipe Nipple 11A3740X0A2
41 Connector 15A6002XW22
42 Elbow (3 required) 1B8608X0012
43 Elbow (5 required) 15A6002XW32
44 Tubing (2 required) 0500213809W
45 Tubing 0500213809W
48 Lever Assembly ERAA03023A0
49 Lead Seal and Wire (2 required) (not shown) T12315T0022
50 Lifting Sling (not shown) ERAA03264A0
51 Rain Cap (not shown) ERAA03263A0
52 Lead Seal and Wire (not shown) 1D884799012
35A3174-A
COMPLETE STEEL MAIN VALVE ASSEMBLY
Type 63EGLP-16, 2 MNPT Mounting Parts
(Figure 15)
Key Description Part Number
36 Pipe Nipple, (2 required) 1C2100X0012
40 Pipe Nipple 11A3740X0A2
41 Connector 15A6002XW22
43 Elbow, (5 required) 15A6002XW32
44 Tubing, (2 required) 0500213809W
45 Tubing 0500213809W
48 Lever Assembly ERAA52701A0
Figure 11. Type 63EGLP Main Valve Trim Package
TRIM PACKAGE ASSEMBLY
25A3169_B
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

16
Type 63EGLP/63EGLP-16
Figure 12. Type 63EGLP-16 Main Valve Assembly for 2 MNPT

17
Type 63EGLP/63EGLP-16
TYPE 6358EBLP PILOT INTERIOR VIEW TYPE 6358EBHLP PILOT INTERIOR VIEW
TYPE 6358EBLP PILOT WITH DIAPHRAGM LIMITER
FOR 180 TO 350 psig / 12.4 TO 24.1 bar
SET PRESSURE RANGE INTERIOR VIEW
Figure 13. Types 6358EBLP and 6358EBHLP Pilot Assemblies
48B3430 48B3431_A
48B3430_A
APPLY SEALANT (S)
S
S
S
12
11
2
6
14
20
16
4
1
13
10
8
7
18
38
9
5
36
15
16
3
37
40
S
S
S
12
11
2
6
14
20
16
4
1
13
10
8
7
18
5
38
9
36
37
16
3

18
Type 63EGLP/63EGLP-16
TYPE 6358EBLP
PILOT ASSEMBLY
TYPE 6358EBLP
PILOT ASSEMBLY
FRONT VIEW
BACK VIEW
(ALL PARTS EXCEPT PILOTS FROM TYPE 63EGX7)
41
39
42
45
43
43
43
37
36
38
42
42
40
48
44
44
43
36
Figure 14. Mounting Parts Assembly for Type 63EGLP, NPS 4 / DN 100, CL300 RF
ERAA03024

45
43
43
41
44 44
48
43
43
3636
43
45
41
40
19
Type 63EGLP/63EGLP-16
Figure 15. Type 63EGLP-16 for 2 MNPT
ERAA52569_AA
TYPE 6358EBLP
PILOT ASSEMBLY
(6358X3)
TYPE 6358EBLP
PILOT ASSEMBLY
(6358X3)

Type 63EGLP/63EGLP-16
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D450319T012 © 2013, 2022 Emerson Process Management Regulator
Technologies, Inc. All rights reserved. 10/22
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