Type EZR
D102600XENG
Installation Guide
English – May 2002
www.FISHERregulators.com
Introduction
This installation guide provides instructions for installation,
startup, and adjustment. To receive a copy of the instruction
manual, contact your local Fisher Sales
Office or Sales Representative or view a copy at
www.FISHERregulators.com. For further information refer to:
Type EZR Instruction Manual, form 5468, D102600X012.
The Type EZR pilot-operated, pressure reducing regula-
tors are used for natural gas, air, or other non-corrosive
gas applications and include a Type 112 restrictor and a
161EB Series or 161AY Series pilot. For applications
that have high pressure drops, using a Type 161AYM,
161EBM, or 161EBHM monitor pilot will increase the ac-
curacy of the regulator.
P.E.D. Categories
This product may be used as a safety accessory with
pressure equipment in the following Pressure Equipment
Directive 97/23/EC categories. It may also be used out-
side of the Pressure Equipment Directive using sound
engineering practice (SEP) per table below.
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Specifications
Main Valve Body Sizes, End Connection
Styles,
and Structural Design Ratings
(1)
See table 1
Maximum Inlet Pressures and Pressure Drops
(1)
Main Valve:
See table 6
Pilots:
See table 3
Restrictor:
103 bar (1500 psig)
Outlet (Control) Pressure Ranges
(1)
See table 2
Minimum and Maximum Differential Pressures
(1)
See tables 4 and 6
Proof Test Pressure
All Pressure Retaining Components have been
proof tested per Directive 97/23/EC - Annex 1,
Section 7.4
Temperature Capabilities
(1)
See table 5
Pilot Type Descriptions
Type 161AY
—Low-pressure pilot with an outlet pressure
range from 15 mbar to 0,48 bar (6-inches w.c. to 7 psig).
Pilot bleeds (exhausts) downstream through the sense
(control) line.
Type 161AYM
—The monitor version of the Type 161AY
pilot. The pilot bleed (exhaust) is isolated from the
sense (control) line. This pilot is used in monitoring
systems requiring an isolated pilot bleed (exhaust).
Type 161EB
—High accuracy pilot with an outlet pressure
range from 0,34 to 24,2 bar (5 to 350 psig). Pilot bleeds
(exhausts) downstream through the sense (control) line.
Type 161EBM
—The monitor version of the Type 161EB
pilot. The pilot bleed (exhaust) is isolated from the
sense (control) line. This pilot is used in monitoring
systems requiring an isolated pilot bleed (exhaust).
Type 161EBH
—The high-pressure version of the
Type 161EB pilot with an outlet pressure range from
17,2 to 48,3 bar (250 to 700 psig).
Type 161EBHM
—The high-pressure version of the
Type 161EBM pilot with an outlet pressure range from
17,2 to 48,3 bar (250 to 700 psig).
Installation
Only qualified personnel should install or service
a regulator. Regulators should be installed,
operated, and maintained in accordance with
international and applicable codes and
regulations, and Fisher instructions.
If the regulator vents fluid or a leak develops in
the system, it indicates that service is required.
Failure to take the regulator out of service
immediately may create a hazardous condition.
Personal injury, equipment damage, or leakage due
to escaping fluid or bursting of pressure-containing
parts may result if this regulator is overpressured
or is installed where service conditions could
exceed the limits given in the Specifications section,
or where conditions exceed any ratings of the
adjacent piping or piping connections.
1. The pressure/temperature limits in this installation guide and any applicable
standard or code limitation should not be exceeded.
Patent Numbers 5,964,446 and 6,102,071
Additional Patents Pending
Table 1. Main Valve Body Sizes, End Connection Styles, and Body Ratings
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