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Fisher EZR User Manual

Fisher EZR
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Type EZR
D102600X012
Instruction Manual
Form 5468
June 2010

TYPE EZR REGULATOR
W7399

W7430
161AY SERIES PILOT
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
This instruction manual provides installation, startup,
adjustment, maintenance, and parts ordering
information for Type EZR pressure reducing regulator,
Type 112 restrictor, 161AY Series pilot, 161EB Series
pilot, and PRX Series pilot. Any accessories used
with this regulator are covered in their respective
instruction manuals.

The Type EZR pilot-operated, pressure reducing
regulators are used for natural gas, air, or other
non-corrosive gas applications and include a Type 112
restrictor and a 161EB, 161AY, or PRX Series pilot. For
applications that have high-pressure drops, using a
Type 161AYM or 161EBM monitor pilot will increase the
accuracy of the regulator.
Figure 1. Type EZR Pressure Reducing Regulator
TYPE PRx PILOT
W8346
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WARnInG

Table of Contents

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Fisher EZR Specifications

General IconGeneral
End Connection StyleNPT
Maximum Inlet Pressure400 psig
Temperature Capabilities-20°F to 180°F (-29°C to 82°C)
CertificationsPED
TypeRegulator
Output SignalPneumatic
Supply PressureNot applicable (self-operated)
Ambient Temperature Range-20°F to 180°F (-29°C to 82°C)
MountingIn-Line
Outlet Pressure Ranges3 to 30 psig

Summary

Introduction

Scope of the Manual

Defines the manual's coverage of installation, startup, adjustment, and maintenance.

Product Description

Describes the Type EZR regulator and its applications.

Specifications

Main Valve Body Sizes, End Connection Styles, and Structural Design Ratings

Details main valve body sizes, end connections, and structural ratings.

Maximum Inlet Pressures and Pressure Drops

Lists maximum inlet pressures and pressure drops for main valves and pilots.

Outlet (Control) Pressure Ranges

Specifies the available outlet pressure ranges for the regulator pilots.

Main Valve Plug Travel

Provides the travel distance for the main valve plug across different sizes.

Minimum and Maximum Differential Pressures

Outlines minimum and maximum differential pressures required for operation.

Proportional Bands

Details the proportional band characteristics for the regulator pilots.

Temperature Capabilities

Lists the temperature ranges the regulator can operate within.

Pressure Registration

Indicates whether pressure registration is internal or external.

Options

Lists available optional features for the Type EZR regulator.

Principle of Operation

Pilot Types and Descriptions

Pilot Type Descriptions

Summarizes the characteristics of different pilot types like 161AY, 161EB, and PRX.

Type 161AY

Details the low-pressure pilot with specific pressure ranges and bleed characteristics.

Type 161AYM

Describes the monitor version of the Type 161AY pilot for isolated bleed applications.

Type 161EB

Details the high-accuracy pilot with specific pressure ranges and bleed characteristics.

Type 161EBM

Describes the monitor version of the Type 161EB pilot for isolated bleed applications.

Type PRX/120

Details the PRX/120 pilot with its pressure range and features.

Installation

All Installations

Provides general guidelines and considerations for installing the Type EZR regulator.

Wide-Open Monitor Installations

Details installation procedures for wide-open monitor configurations.

Working Monitor Installations

Outlines installation steps for working monitor configurations.

Type EZR/PRX Working Monitor

Describes the installation of PRX pilots in working monitor systems.

Startup and Adjustment

Pilot Adjustment

Instructions for adjusting the pilot pressure setting for various pilot types.

Type 112 Restrictor Adjustment

Guidance on adjusting the Type 112 restrictor for proportional band and speed.

Shutdown

Shutdown for Both Single-Regulator and Monitoring Installations

Procedures for safely shutting down single-regulator and monitor systems.

Maintenance

Type EZR Main Valve Trim Parts

Information on replacing main valve trim parts for the Type EZR.

Converting a Fisher® E-Body to Type EZR

Steps to convert an existing E-body valve to a Type EZR configuration.

Disassembly and Assembly

Detailed procedures for disassembling and assembling the Type EZR main valve.

Diaphragm and Plug Assembly Maintenance

Maintenance steps for the diaphragm and plug assembly components.

Travel Indicator Assembly Maintenance

Procedures for maintaining the travel indicator assembly.

Pilot Specifics and Parts

161EB Series Pilots

Details specific parts, adjustments, and configurations for 161EB series pilots.

161AY Series Pilots

Details specific parts, adjustments, and configurations for 161AY series pilots.

PRX Series Maintenance

Maintenance procedures for PRX series pilots, including case adjustments.

Pilot Mounting Configurations

Illustrates various mounting configurations and parts for pilots with the Type EZR.

Parts Ordering

Parts List

Comprehensive list of part numbers for the Type EZR main valve and pilots.

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