Europe, Middle East, and Africa Document Only
CHARACTERISTICS
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.
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•
(1) BMS - Safety Manometric Box
(2) BMP - Pilot Manometric Box
(3) Depending on choice of BMS and BMP
(4) Standard version
Table 1. General Characteristics for Type EZR Regulator
OPERATING PRESSURE
A352LCC Body, Actuator, Valve,
Pilot Body, Slam Shut
PS 72.4 bar
Associated BMS
(1)
, according to size
PSD
10 to 100 bar
BMP
(2)
, according to size 100 bar
Type DS
Differential strength
(3)
OPERATING TEMPERATURE TS -17 / 66°C
(4)
REGULATOR
Sizes available DN 25, 50, 80, 100, 150
European EN Standard EN 334
Inlet Pressure Pu 3 to 72.4 bar
Outlet Pressure Pd 1 to 69 bar
Minimum Differential DP min 2 to 3 bar
Maximum
Differential
PN 20
DP max
18.6 bar
PN 50 50.0 bar
PN 100 55.2 bar
Accuracy (optimal) AC Up to ± 5%
Lock-Up Pressure Class SG Contact factory
Lock-Up Pressure Zone Class SZ Contact factory
SLAM SHUT
European EN Standard EN 14382
Operation Class
A or B (see g. 3)
Maximum Operating Differential DP max 69.4 bar
Response Time ta < 1 s
Accuracy
Diaphragm, Bellows
AG
± 2.5%
Piston ± 5%
Set Pressure Range
Wdu-
Wdo
0.010 to 100 bar
FlowCoefcient Qf 13
Internal Automatic Bypass Cg 25
Rearming Manual after rectication of fault
Position Indicator On mechanism box
Fluid
Groups 1 and 2 according to PED 97/23/EC, Gas 1
st
and 2
nd
family ac-
cording to EN 437, or other gases (compressed air, nitrogen).
The gas must be non corrosive, clean
(ltration on inlet side necessary) and dry.
(38 strony)
(1 strony)
(2 strony)
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