Emerson Fisher EZH Series - Characteristics

3
Types EZH and EZHSO
Europe, Middle East and Africa Only
TYPE
OUTLET PRESSURE
ADJUSTMENT RANGES, bar
AC (ACCURACY CLASS) PILOT CONTROL SPRING INFORMATION
TYPE EZH TYPE EZHSO SPRING COLOR
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
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; -30 / 71°C(5)
Sizes available DN 25, 50, 80, 100, 150 and 200
Noise level reduction Up to 8 dB
REGULATOR
European EN Standard EN 334
Inlet Pressure P
u 2 to 100 bar
Outlet Pressure P
d 1 to 80 bar
Minimum Differential
ΔP
min
1 bar (Type EZH)
3.8 bar (DN 25, 50, 80 Type EZHSO)
1.8 bar (DN 100 Type EZHSO)
1 bar (DN 150, 200 Type EZHSO)
Maximum Differential
ΔP
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
ΔP
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 Coefcient Q
f 13
Internal Automatic Bypass C
g 25
Rearming Manual after rectication of fault
Position Indicator On mechanism box
FLUID
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 (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 conguration for Type EZH OS2
(5) Optional
Regulator Options
• Silencer (Figure 24)
The Type EZH silencer (Whisper III) is integrated in the
regulator and is composed of a drilled cage. The Whisper
III silencer is available for DN 50, 80, 100, 150 and 200
and allows a noise attenuation up to 8dB.
• Flow Coefcient Reduction (Figure 16)
The ow reduction is realized by replacement of the
regulator standard seat by a reduction seat (key 2).
• Type RPE Electrical Pilot Heater (Figure 27)
The Type RPE is used for reheating the gas supplying
pressure reducing regulator pilots. The Type RPE avoids
the inconveniences caused by freezing which can occur
during high pressure drops.
Actuator
The actuator is an integral pressure type. All pressure parts
are designed to resist up to 100 bar. The diaphragm is
strong and can resist to a differential of 100 bar.
R95