EZH and EZHSO Series
Pressure Reducing Regulators
!
WARNING
Failure to follow these instructions or to
properly install and maintain this equipment
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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 Emerson
Process Management Regulator
Technologies, Inc. (Emerson) 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.
Call a gas service person to service the unit.
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the regulator.
Introduction
Scope of the Manual
This manual provides installation, startup and maintenance
instructions and parts ordering information for the EZH and
EZHSO Series pressure-reducing regulators, PRX Series
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on other equipment used with this regulator is found in
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Product Description
EZH Series (Spring-to-Close) and EZHSO Series (Spring-
to-Open) regulators are accurate pilot-operated, pressure-
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in high pressure natural gas transmission/city gate stations,
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They provide smooth and reliable operation, tight shutoff and
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Figure 1. EZH Series Pressure Reducing Regulator
TYPE PRX/120
TYPE PRX/120-AP
Figure 2. PRX Series Pressure Reducing Pilots
Instruction Manual
D103077X012
November 2017
EZH and EZHSO Series
