Types 1098-EGR and 1098H-EGR
D100339X012
Instruction Manual
Form 5084
December 2008
www.emersonprocess.com/regulators
Types 1098-EGR and 1098H-EGR Pressure
Reducing Regulators
!
WARNING
Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion,
causing property damage and personal
injury or death.
Fisher
®
regulators must be installed,
operated, and maintained in accordance
with federal, state, and local codes, rules
and regulations, and Fisher instructions.
If the regulator vents gas or a leak
develops in the system, service to the unit
may be required. Failure to correct trouble
could result in a hazardous condition.
Installation, operation, and maintenance
personnel may result in improper
adjustment and unsafe operation. Either
condition may result in equipment
personnel when installing, operating,
and maintaining the Types 1098-EGR and
1098H-EGR pressure reducing regulator.
Introduction
Scope of Manual
This manual describes and provides instructions
and parts list for Type 1098-EGR or 1098H-EGR
regulator complete with a standard P590 Series
lter and either a 6350 Series regulator, a 61 Series
pilot, or a Type Y600AM Pilot. The Type 1806 relief
valve is also covered when a 61 Series pilot is used.
Instructions and parts lists for monitoring pilots and
other equipment used with this regulator are found in
separate manuals.
Figure 1. Type 1098-EGR
W6956
Description
Types 1098-EGR and 1098H-EGR regulators provide
economical and accurate pressure control in a
wide variety of applications; natural gas distribution
systems; fuel gas supply to industrial boilers, furnaces,
ovens, and mixers; and large commercial/industrial
establishments such as shopping centers and schools.
They are also used in plant air service and in liquid
service where a slow stroking time (approximately
30 to 90 seconds) is desired on both opening and
closing the main valve.
The Specications section lists pressure limitations
and other specications for various Types 1098-EGR
and 1098H-EGR constructions. Specications for a
given regulator as it originally comes from the factory
are stamped on nameplates located on both the
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