W6866
!
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,
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.
Figure 1.
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.
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.
July 2019
Type 63EG-98HM
Instruction Manual
D102630X012
