Types EZH and EZHSO
3
TYPE
OUTLET PRESSURE
ADJUSTMENT RANGES (bar)
AC (ACCURACY CLASS) PILOT CONTROL SPRING INFORMATION
TYPE EZH TYPE EZHSO Spring Colour
PRX/120 and
PRX/125
1.0 to 1.8
1.8 to 3.0
3.0 to 5.5
5.5 to 8.5
2.5%
2.5%
2.5%
2.5%
2.5%
2.5%
2.5%
2.5%
Yellow
Green
Blue
Black
8.5 to 14.5
14.5 to 23.0
23.0 to 30.0
30.0 to 40.0
1%
1%
1%
1%
2.5%
2.5%
2.5%
2.5%
Silver
Gold
Aluminium
Red
PRX/120-AP and
PRX/125-AP
30.0 to 80.0 1% 2.5% Clear
Table 2. Outlet Pressure Ranges, Accuracy Class, and Pilot Spring Information
R95
CHARACTERISTICS
Table 1. General Characteristics for Types EZH and EZHSO Regulator
OPERATING PRESSURE
A352LCC Body, Actuator, Valve,
Pilot Body, Slam shut
PS 100 bar max
Associated BMS
(1)
, according to size PSD 10 to 100 bar
Type IS Integral strength
(4)
OPERATING TEMPERATURE
(2)
TS -20 / 60°C Class 2
Sizes available DN 25, 50, 80, and 100
Noise level reduction Up to 8 dB
REGULATOR
European EN Standard EN 334
Inlet Pressure Pu 2 to 100 bar
Outlet Pressure Pd 1 to 80 bar
Minimum Differential DP min
1 bar (Type EZH)
3.8 bar (Type EZHSO)
Maximum Differential DP max
99 bar (Type EZH)
96.2 bar (Type EZHSO)
Accuracy (optimal) AC See Table 2
Lock-Up Pressure Class SG Up to 5%
(3)
Lock-Up Pressure Zone Class SZ Up to 5%
(3)
SLAM SHUT
European EN Standard EN 14382
Operation Class
A or B (see Figure 3)
Maximum Operating Differential DP max 100 bar
Response Time ta <1 s
Accuracy
Diaphragm,
Bellows
AG
Up to ±2.5%
Piston Up to ±5%
Set Pressure Range
Wdu-Wdo
0.010 / 100 bar
Flow Coefcient Q
f
13
Internal Automatic Bypass C
g
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 according to
EN 437, or other gases (compressed air, nitrogen).
The gas must be non corrosive, clean
(ltration on inlet side necessary) and dry.
(1) BMS - Safety Manometric Box
(2) Standard version
(3) Contact us with your operating conditions
(4) Depending on BMS conguration for Type EZH OS2
Table 3a. 2:1 Line Flow Coefcients, Regulator, and Slam-Shut Travel
R96
TYPES EZH (DN 25 - 100) AND EZHSO (DN 25 - 100)
REDUCTION
WITH SLAM SHUT (X BODY) WITHOUT SLAM SHUT (E BODY)
DN
25 DN 50 DN 80 DN 100 DN 25 DN 50 DN 80 DN 100
Q
f
0
284 1078 2247 3567 280 1088 2266 3696
1
210 908 1684 2969 218 829 1698 2902
2
126 671 1058 1763 128 607 1066 1784
3
79 385 685 1062 81 370 690 1072
C
g
0
550 2092 4359 6920 544 2110 4396 7170
1
408 1762 3266 5760 423 1609 3294 5630
2
245 1301 2052 3420 249 1177 2069 3460
3
154 746 1328 2060 157 718 1339 2080
C
1
0
31.3 38.3 30.8 32.5 35.5 33.5 30.8 31.4
1
34.3 35.3 33.9 35.3 38.7 31.9 33.9 34.2
2
33.6 38.8 37.8 37.3 39.7 35.6 37.8 36.3
3
32.1 40.8 33.6 37.1 39.1 38.2 33.6 37.3
Regulator travel (mm) 9 17 25 30 9 17 25 30
Slam-shut travel (mm) 15 30 50
(68 paginas)
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