Emerson Fisher 63EG-98HM Instruction Manual
Instruction Manual
D102630X012
July 2019
Type 63EG-98HM
Type 63EG-98HM Pilot-Operated Relief Valve or
Backpressure Regulator
WARNING
!
Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion,
re and/or chemical contamination
causing property damage and personal
injury or death.
Fisher™ relief valves or backpressure
regulators must be installed, operated
and maintained in accordance with
federal, state and local codes, rules
and regulations and Emerson Process
Management Regulator Technologies,
Inc. (Emerson) instructions.
If 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 qualied person must
install or service the unit.
Installation, operation and maintenance
procedures performed by unqualied
personnel may result in improper
adjustment and unsafe operation. Either
condition may result in equipment
damage or personal injury. Use qualied
personnel when installing, operating and
maintaining the Type 63EG-98HM
Pilot-Operated Relief Valve or
Backpressure Regulator.
Introduction
Scope of the Manual
This manual describes and provides instructions and
a parts list for the Type 63EG-98HM relief valve or
backpressure regulator. Instructions and parts lists
for other equipment used with this valve are found in
separate manuals.
W6866
Figure 1. Type 63EG-98HM Pilot-Operated Relief Valve or
Backpressure Regulator
Product Description
The Type 63EG-98HM pilot-operated relief valve
or backpressure regulator is used for gas or liquid
applications. For applications up to 450°F / 232°C,
the Type 63EG-98HM utilizes high temperature
Ethylenepropylene (EPR) or Peruoroelastomer
(FFKM) elastomers for Class VI shuto. If used in a
corrosive service, Peruoroelastomer (FFKM) and other
elastomers are available options that oer superior
resistance to heat and most corrosive chemicals. This
unit is not an ASME certied device.
Type 63EG-98HM
Specications
This section lists the specications for Type 63EG-98HM relief valves or backpressure regulators. Factory
specications are stamped on the main valve and pilot nameplates. The main valve nameplate is located on the
main valve body. The pilot relief pressure range appears on the pilot nameplate.
Main Valve Body Sizes and End Connection Styles
(1)
See Table 1
Maximum Design Pressure
(2)(3)
600 psig / 41.4 bar or body rating limit, whichever
is lower
Maximum Operating Relief (Inlet) Pressure
Including Build-up
(2)(3)
450 psig / 31.0 bar or body rating limit, whichever
is lower
Maximum Outlet Pressure
(2)(3)
450 psig / 31.0 bar
Maximum Dierential Pressure
(2)
400 psig / 27.6 bar
Relief Set Pressure/Backpressure Control Ranges
See Table 3
Port Diameter and Valve Plug Travels
See Table 2
Dierential and Build-up Pressure Requirements
(2)
See Table 4
1. Other ratings and end connections can usually be supplied; consult the local Sales Oce.
2. The pressure/temperature limits in this Instruction Manual and any applicable standard limitation should not be exceeded.
3. Fluorocarbon (FKM) diaphragm is limited to 300 psig / 20.7 bar.
4. Set pressure is dened as the pressure at which the pilot starts-to-discharge.
5. Special low temperature constructions for process temperatures between -76 to 104°F / -60 to 40°C are available by request. The low temperature construction passed Emerson
laboratory testing for lockup and external leakage down to -76°F / -60°C.
Temperature Capabilities
Fluorocarbon (FKM): 0 to 300°F / -18 to 149°C
Not acceptable in water in excess of 180°F / 82°C
Ethylenepropylene (EPR):
Steel: -20 to 350°F / -29 to 177°C
Stainless steel: -40 to 350°F / -40 to 177°C
Peruoroelastomer (FFKM): 0 to 450°F /
-18 to 232°C
Main Valve Flow Characteristics
Linear (standard) or Whisper Trim™ III Cage (optional)
Pilot Control Line Connection
1/4 NPT
Pilot Spring Case Connection
(4)
1/4 NPT
Approximate Weights (Including pilot)
NPS 2 / DN 50 body: 65 lbs / 29 kg
NPS 3 / DN 80 body: 105 lbs / 48 kg
NPS 4 / DN 100 body: 155 lbs / 70 kg
NPS 6 / DN 150 body: 340 lbs / 154 kg
NPS 8 x 6 / DN 200 x 150 body: 630 lbs / 286 kg
(2)(5)
Table 1. Body Sizes and End Connection Styles Table 2. Port Diameters and Valve Plug Travels
MAIN VALVE BODY SIZE
NPS DN
2 50
3, 4, 6 80, 100, 150
8 x 6 200 x 150
END CONNECTION STYLE
NPT, ASME CL150 RF, CL300 RF,
CL600 RF or PN 16/25/40 anged
ASME CL150 RF, CL300 RF,
CL600 RF or PN 16/25/40 anged
ASME CL150 RF, CL300 RF
and CL600 RF anged
BODY SIZE PORT DIAMETER VALVE PLUG TRAVEL
NPS DN In. mm In. mm
2 50 2-3/8 60 1-1/8 29
3 80 3-3/8 86 1-1/2 38
4 100 4-3/8 111 2 51
6 150 7-3/16 183 2 51
8 x 6 200 x 150 7-3/16 183 2 51
Table 3. Relief Set Pressure or Backpressure Control Ranges
CONTROL PRESSURE RANGE
psig bar In. mm In. mm
15 to 35 1.0 to 2.4 ERCA04288A0 Yellow 2.50 63.5 0.207 5.26
25 to 75 1.7 to 5.2 ERAA01910A0 Green 2.595 65.9 0.234 5.94
70 to 140 4.8 to 9.7 ERAA01911A0 Red 2.44 62.0 0.283 7.19
130 to 200 9.0 to 13.8 ERAA02889A0 Blue 2.250 57.2 0.331 8.41
100 to 375 6.9 to 25.9 ERCA04293A0 Unpainted 2.60 66.0 0.375 9.53
150 to 375
1. All springs may be backed o to 0 psig / 0 bar. However, highest capacities and best performances are obtained by using these springs in their recommended ranges.
2. 150 to 375 psig / 10.3 to 25.9 bar spring range is only for the Type MR98HH pilot construction; consult the local Sales Oce for this option..
2
(2)
10.3 to 25.9
(1)
PART NUMBER COLOR
(2)
1N943427142 Unpainted 5.063 129 0.394 10.0
SPRING FREE LENGTH SPRING WIRE DIAMETER
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
Type 63EG-98HM
PILOT EXHAUST
(PIPE DOWNSTREAM
IF MINIMUM DIFFERENTIAL
IS MET)
TYPE MR98H
COMP
CONTROL LINE
(MUST BE AT LEAST
3/8 IN. / 9.5 mm TUBING)
A6926_2
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
LOADING PRESSURE
Note: On an actual Type 63EG-98HM, the pilot spring case points downstream.
FIXED RESTRICTION
Figure 2. Operational Schematic
Principle of Operation
As long as inlet pressure remains below set pressure,
the pilot control spring keeps the pilot valve plug
closed (Figure 2). This pressure provides the loading
pressure to help the main valve spring keep the main
valve plug tightly shuto.
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
exhaust faster than it can be replaced through the pilot
restriction. This permits inlet pressure to unbalance
the main valve plug and open the main valve. As inlet
pressure drops below set pressure, the pilot control
spring closes the pilot valve plug. Loading pressure
again builds up to close the main valve plug.
TYPE 63EG
Installation
WARNING
!
Personal injury, equipment damage or
leakage due to escaping gas (or liquid)
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 this, install
a Type 63EG-98HM relief valve where:
• Service conditions are within unit
capabilities (including those given in
the Specications 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 (or
liquid). To avoid such injury or damage,
install the unit in a safe location.
3
Type 63EG-98HM
Table 4. Minimum and Maximum Dierential and Build-up Required for Wide-Open Flow
BODY SIZE,
NPS / DN
2 / 50
3 / 80
4 / 100
6, 8 x 6 /
150, 200 x 150
1. Minimum dierential is dened as the dierence between the inlet pressure to the main valve body and the exhaust pressure from the pilot outlet. If the pilot exhaust is piped to the
immediate downstream system, the dierential is between the inlet and outlet pressure of the backpressure regulator. The pilot exhaust also may be discharged to atmosphere.
2. CL150 steel body is limited to 290 psig / 20 bar.
MAIN VALVE SPRING RANGE,
SPRING PART NUMBER
AND COLOR
10 to 40 psig / 0.69 to 2.8 bar
14A6768X012 Yellow
30 to 125 psig / 2.1 to 8.6 bar
14A6626X012 Green
85 to 400 psig / 5.9 to 27.6 bar
14A6628X012 Red
10 to 40 psig / 0.69 to 2.8 bar
14A6771X012 Yellow
30 to 125 psig / 2.1 to 8.6 bar
14A6629X012 Green
85 to 400 psig / 5.9 to 27.6 bar
14A6631X012 Red
10 to 40 psig / 0.69 to 2.8 bar
14A6770X012 Yellow
30 to 125 psig / 2.1 to 8.6 bar
14A6632X012 Green
85 to 400 psig / 5.9 to 27.6 bar
14A6634X012 Red
10 to 40 psig / 0.69 to 2.8 bar
15A2253X012 Yellow
30 to 125 psig / 2.1 to 8.6 bar
14A9686X012 Green
85 to 400 psig / 5.9 to 27.6 bar
15A2615X012 Red
MINIMUM DIFFERENTIAL
PRESSURE REQUIRED
FOR FULL STROKE
psi bar psi bar psi bar
22 1.5 7 0.48 40 2.8
30 2.1 9 0.6 125 8.6
90 6.2 23 1.6 400
19 1.3 5 0.34 40 2.8
25 1.7 7 0.48 125 8.6
60 4.1 17 1.2 400
16 1.1 4 0.28 40 2.8
20 1.4 6 0.4 125 8.6
55 3.8 16 1.1 400
16 1.1 4 0.28 40 2.8
20 1.4 6 0.4 125 8.6
55 3.8 16 1.1 400
(1)
BUILD-UP OVER SET
PRESSURE REQUIRED
FOR FULL STROKE
MAXIMUM DIFFERENTIAL
PRESSURE
(2)
28
(2)
28
(2)
28
(2)
28
(2)
(2)
(2)
(2)
1. Call a qualied personnel when installing,
operating, and maintaining relief valves and
backpressure 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 external pipe threads with an NPT
body, or use suitable line gaskets and good bolting
practices with a anged body.
2. A Type 63EG-98HM may be installed in any
orientation, as long as ow through the valve
matches the direction of the arrow on the main
valve body.
WARNING
!
Type 63EG relief valves vent 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 or exposure of vented gas
(or liquid) that has accumulated. To
prevent such injury or damage, provide
piping or tubing to vent the gas (or
liquid) to a safe location. The exhaust
piping must be designed and installed to
guard against excessive ow restriction.
This piping must be protected against
condensation or anything else that could
clog it.
For safety during shutdown, vent valves
are required immediately upstream
and downstream of the main valve on a
backpressure or bypass installation.
3. If system operation is necessary during
maintenance or inspection, install isolating and
vent valves as needed.
4. A relief valve must be installed so that the pilot
exhausts properly and in a safe place. Make
sure to keep the pilot spring case vent open to
atmospheric pressure.
5. If the exhaust is to be piped to the main valve
outlet or remotely vented, install obstruction-free
tubing or piping with a minimum number of bends
into the 1/2 NPT pilot exhaust connection.
4
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