SV2 Series Safety Shut-off Valves
15
V2F, V2V
SV2 SERIES SAFETY SHUT-OFF VALVES USER MANUAL
MCR37078
1
10
100
1,000
10,000
2.0 IN (DN50) ON/OFF VALVE CAPACITY CURVES
28.32
283.2
1,076
747
249
24.9
2.49
PRESSURE DROP
-MBAR -INCHES W.C.
300
38,000
1 INCH (DN25) FLANGE
1-1/4 INCH (DN32) FLANGE
1-1/2 INCH (DN40) FLANGE
2 INCH (DN50) FLANGE
NATURAL GAS FLOW –CFH (CUBIC FEET PER HOUR)
–M
3
/HR (METERS CUBED PER HOUR)
1
PRESSURE DROP FORMULAS PER FLANGE SIZE AND UNIT TYPES:
A.) CFH AND IN W.C.
• 1 IN (DN25)
=
0.000000522
X (FLOW
2
)
• 1-1/4 IN (DN32) =
0.000000290
X (FLOW
2
)
• 1-1/2 IN (DN40) =
0.000000240
X (FLOW
2
)
• 2 IN (DN50)
=
0.000000193
X (FLOW
2
)
B.) M
3
/HR AND MBAR
• 1 IN (DN25)
=
0.001620
X (FLOW
2
)
• 1-1/4 IN (DN32) =
0.000900
X (FLOW
2
)
• 1-1/2 IN (DN40) =
0.000745
X (FLOW
2
)
• 2 IN (DN50)
=
0.000600
X (FLOW
2
)
Fig. 9: 2.0 in (DN50) On/off valve capacity curves.