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Instruction Manual
D102630X012
July 2019
Type 63EG-98HM Pilot-Operated Relief Valve or
Backpressure Regulator
!
Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion,
fire 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 qualified person must
install or service the unit.
Installation, operation and maintenance
procedures performed by unqualified
personnel may result in improper
adjustment and unsafe operation. Either
condition may result in equipment
damage or personal injury. Use qualified
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.
WARNING
Type 63EG-98HM
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 Perfluoroelastomer
(FFKM) elastomers for Class VI shutoff. If used in a
corrosive service, Perfluoroelastomer (FFKM) and other
elastomers are available options that offer superior
resistance to heat and most corrosive chemicals. This
unit is not an ASME certified device.
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Table of Contents
Related Manuals for Emerson Fisher 63EG-98HM
Summary of Contents for Emerson Fisher 63EG-98HM
- Page 1 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.
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Page 2: Specifications
4. Set pressure is defined 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. -
Page 3: Installation
Type 63EG-98HM PILOT EXHAUST (PIPE DOWNSTREAM IF MINIMUM DIFFERENTIAL IS MET) TYPE MR98H CONTROL LINE TYPE 63EG (MUST BE AT LEAST FIXED RESTRICTION 3/8 IN. / 9.5 mm TUBING) A6926_2 INLET PRESSURE INLET PRESSURE OUTLET PRESSURE OUTLET PRESSURE ATMOSPHERIC PRESSURE ATMOSPHERIC PRESSURE LOADING PRESSURE LOADING PRESSURE... - Page 4 Type 63EG-98HM Table 4. Minimum and Maximum Differential and Build-up Required for Wide-Open Flow MINIMUM DIFFERENTIAL BUILD-UP OVER SET MAXIMUM DIFFERENTIAL MAIN VALVE SPRING RANGE, PRESSURE REQUIRED PRESSURE REQUIRED BODY SIZE, PRESSURE SPRING PART NUMBER FOR FULL STROKE FOR FULL STROKE NPS / DN AND COLOR 10 to 40 psig / 0.69 to 2.8 bar...
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Page 5: Startup And Adjustment
Due to the care Emerson spring compression on the pilot, by using the takes in meeting all manufacturing requirements adjusting screw. - Page 6 Use the valve body as a holding fixture to service. Only parts manufactured by during this step as shown in Figure 3 and insert a Emerson should be used for repairing wrench handle or similar tool into the orifice slots for Fisher™ relief valves and regulators.
- Page 7 Type 63EG-98HM Table 5. Type 63EG Main Valve Body Part Numbers (Key 1) PART NUMBER BODY MATERIAL END CONNECTION STYLE NPS 8 x 6 / NPS 2 / DN 50 NPS 3 / DN 80 NPS 4 / DN 100 NPS 6 / DN 150 DN 200 x 150 - - - - - - - - - - -...
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Page 8: Parts Ordering
Type 63EG-98HM Parts Ordering Description Part Number Spring See Table 6 Cage Each Type 63EG-98HM is assigned a serial NPS 2 / DN 50 body number or FS number which can be found on the 316 Stainless steel Linear Cage 34B5838X012 nameplates. - Page 9 Type 63EG-98HM Type 63EG Main Valve (continued) Description Part Number Nameplate - - - - - - - - - - - Description Part Number Travel Indicator Plug Upper Seal (continued) Steel NPS 4 / DN 100 body NPS 2, 3 and 4 / DN 50, 80 and 100 bodies 17B4894X012 Fluorocarbon (FKM) 25A7468X012...
- Page 10 Type 63EG-98HM Type MR98H Pilot (continued) Description Part Number Description Part Number Lower Spring Seat Adjusting Screw Use with all other springs Use with all other springs GF05553X012 Use with 150 to 375 psig / 10.3 to 25.9 bar spring ERAA02340A0 Aluminum 1L339708012...
- Page 11 Type 63EG-98HM 24 25 35A3174-A A2812 Figure 4. Type 63EG Main Valve EXHAUST CONTROL LINE CONNECTION FIXED RESTRICTION 37B5269 35A3174-A E0387 A2812 Figure 5. Type 63EG Main Valve Trim Package Figure 6. Type 63EG-98HM Mounting Parts...
- Page 12 Technologies, Inc. All rights reserved. 07/19. Emerson Automation Solutions The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their prospective owners. Fisher™ is a mark owned by Fisher Controls International LLC, a...