Honeywell SV2 Series User Manual page 14

SV2 Series Safety Shut-off Valves
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)
PRESSURE DROP FORMULAS PER FLANGE SIZE AND UNIT TYPES:
1
A.) CFH AND IN W.C.
• 1 IN (DN25)
• 1-1/4 IN (DN32) = 0.000000592 X (FLOW
• 1-1/2 IN (DN40) = 0.000000578 X (FLOW
• 2 IN (DN50)
B.) M /HR AND MBAR
3
• 1 IN (DN25)
• 1 1/4 IN (DN32) = 0.001838 X (FLOW
• 1-1/2 IN (DN40) = 0.0001795 X (FLOW
• 2 IN (DN50)
Fig. 8: 1.5 in (DN40) On/off valve capacity curves.
1.5 IN (DN40) ON/OFF VALVE CAPACITY CURVES
- M /HR (METERS CUBED PER HOUR)
3
= 0.000000838 X (FLOW
= 0.000000539 X (FLOW
= 0.002601 X (FLOW )
2
)
2
2
= 0.0001673 X (FLOW
2
)
2
)
2
)
2
)
2
)
)
14
10,000
283.2
1 INCH (DN25) FLANGE
1-1/4 INCH (DN32) FLANGE
1-1/2 INCH (DN40) FLANGE
2 INCH (DN50) FLANGE
23,000
651.3
MCR37077
32-00029—02