Advertisement
Type EZR
Specifications
Specifications for the Type EZR regulator are shown below. The control spring range for the pilot is marked on the
spring case of 161EB Series pilots and on the nameplate of 161AY and PRX Series pilots. Other information for the
main valve appears on the nameplate.
Main Valve Body Sizes, End Connection Styles
and Structural Design Ratings
See Table 1
Maximum Inlet Pressures and Pressure Drops
Main Valve: See Table 10
Pilots: See Table 3
Restrictor: 1500 psig / 103 bar
Outlet (Control) Pressure Ranges
See Table 2
Main Valve Plug Travel
nPS 1, 1-1/4 x 1, 2 x 1 /
Dn 25, 32 x 25, 50 x 25: 0.37 in. / 9.4 mm
nPS 2 / Dn 50: 0.68 in. / 17 mm
nPS 3 / Dn 80: 0.98 in. / 25 mm
nPS 4 / Dn 100: 1.19 in. / 30 mm
nPS 6 / Dn 150: 1.5 in. / 38 mm
nPS 8 / Dn 200: 1.75 in. / 44 mm
1. The pressure/temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.
2. End connections for other than ASME standard can usually be provided, contact your local Sales Office for assistance.
Pilot Type Descriptions
Type 161aY—Low-pressure pilot with an outlet
pressure range of 6 in. w.c. to 7 psig / 15 mbar to
0.48 bar. 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 of 5 to 350 psig / 0.34 to 24.1 bar.
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 PRx/120—Outlet pressure range of 14.5 to
435 psig / 1.00 to 30.0 bar. The Type PRX/120 can be
used as the pilot on single-stage pressure reducing
regulators or as the monitor pilot or working pilot in
wide-open monitor systems. The Type PRX has a
double diaphragm which provides increased accuracy
2
(1)(2)
(1)
Minimum and Maximum Differential Pressures
See Tables 4 and 10
Proportional Bands
See Table 2
Temperature Capabilities
See Table 8
Pressure Registration
External
Options
• Integral Slam-Shut Device
• Pre-piped Pilot Supply and Pilot Bleed
• Travel Indicator
• Inlet Strainer
• Type 252 Pilot Supply Filter
• Trim Package
• Restricted Capacity Trim
• Pilot Diaphragm for Pressure Loading
and sensitivity, an integral restrictor adjustment which
allows adjustable opening and closing speeds and
a damper adjustment which adjusts inlet pressure
variability and loading pressure oscillations.
Type PRx/120-aP—Outlet pressure range of 435 to
1000 psig / 30.0 to 69.0 bar. The Type PRX/120-AP
can be used as the pilot on single-stage pressure
reducing regulators, as the monitor pilot or working
pilot in wide-open monitor systems or as the working
pilot for monitoring and working regulators in the
working monitoring systems.
Type PRx/125—Identical to the Type PRX/120 except
the restriction screw is removed. The Type PRX/125
can only be used as the monitor override pilot on
working monitor applications.
Type PRx/125-aP—Identical to the Type PRX/120-AP
except the restriction screw is removed. The
Type PRX/125-AP can only be used as the monitor
override pilot on working monitor applications.
For applications requiring extremely
tight control, using a Type 161aYM or
161EBM monitor pilot will increase the
accuracy of the regulator.
(1)
note
(1)
Advertisement
