Sit 840 SIGMA - GAS FLOW; Flow vs. Pressure Drop; Flow vs. Outlet Pressure

6
GAS FLOW
5 10 15 20
3
4
5
25
6
7
8
6 8 10 12 14 16
2
4
8
6
10
12
0
Regulated flow Q
as a function to outlet pressure Pu,
according to EN 126
0
2
2
4
4
6
8
10
6
8
10
1
Solenoid valves class B+J
Q [m
3
/h d=0.55]
∆P [mbar]
Flowrate at ∆ P = 5 mbar
1
st d=0.41
2
nd d=0.55
3
rd d=1.55
Gas Family
6 m
3
/h
7 m
3
/h
3.6 m
3
/h
Class B+J
Flow Q
as a function of pressure,
drop
∆ P
Third Family Group B/P and Group P
Inlet pressure range (mbar)
Nominal Max. Min. Relative
Density
B/P 29 35 25 2.075
P 37 45 25 1.555
Second Family Group H, E and L
Inlet pressure range (mbar)
Nominal Max. Min. Relative
Density
H-E 20 25 17 0.555
L 25 30 20 0.612
Minimum flowrate 0.3 m
3
/h d=0.55
Pu [mbar]
Pu [mbar]
Q [m
3
/h]
Solenoid valves class B+J
Q [m
3
/h]
Solenoid valves class B+J
L
H-E
P
B/P
ENGLISH