Honeywell SV2 Series User Manual page 15

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