Characteristics - Fisher EZR Instruction Manual

Type EZR
Pilot description
Type PRX Pilot
The Type EZR pressure reducing regulator can be equiped
with a PRX Series pilot mounted on the Type EZR main valve
for pressure reducing or wide-open monitoring applications.
The PRX Series pressure reducing pilots have the ability to
handle a wide range of set points ranging from 1 to 80 bar:
• Type PRX/120:
Outlet pressure range of 1 to 40 bar. The Type PRX/120
can be used as the pilot on single stage pressure reducing
regulators or as the monitor pilot or as the working pilot in
wide-open monitor systems.
• Type PRX/120-aP:
Outlet pressure range of 30 to 80 bar. The Type PRX/120-AP
can be used as the pilot on single stage pressure reducing
regulators or as the monitor pilot or as the working pilot in
wide-open monitor systems.

chaRacTERISTIcS

OPERaTIng PRESSuRE
A352LCC Body, Actuator, Valve,
Pilot Body, Slam Shut
Associated BMS , according to size
(1)
BMP , according to size
(2)
Type
OPERaTIng TEmPERaTuRE
REGULATOR
Sizes available
European En Standard
Inlet Pressure
Outlet Pressure
minimum differential
Pn 20
maximum
Pn 50
differential
Pn 100
accuracy (optimal)
Lock-up Pressure class
(1) BMS - Safety Manometric Box
(2) BMP - Pilot Manometric Box
(3) Depending on choice of BMS and BMP
(4) Standard version
2
Table 1. General Characteristics for Type EZR Regulator
PS 72.4 bar
10 to 100 bar
PSD
100 bar
DS Differential strength
(3)
TS -20 / 66°C
(4)
DN 25, 50, 80, 100, 150
EN 334
Pu 3 to 72.4 bar
Pd 1 to 69 bar
DP min 2 to 3 bar
18.6 bar
DP max 50.0 bar
55.2 bar
AC Up to ± 5%
SG Contact factory
• 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.
Regulator Options
• Travel Indicator
Lock-up Pressure Zone class
SLAM SHUT
European En Standard
Operation class
maximum Operating differential
Response Time
diaphragm, Bellows
accuracy
Piston
Set Pressure Range
Flow Coefficient
Internal automatic Bypass
Rearming Manual after rectification of fault
Position Indicator On mechanism box
Groups 1 and 2 according to PED 2014/68/EU, Gas 1st and 2nd family
according to EN 437 or other gases (compressed air, nitrogen).
The gas must be non corrosive, clean
(filtration on inlet side necessary) and dry.
SZ Contact factory
EN 14382
A or B (see fig. 3)
DP max 69.4 bar
ta < 1 s
± 2.5%
AG
± 5%
Wdu-
0.010 to 100 bar
Wdo
Qf 13
Cg 25
Fluid