Honeywell SV2 Series User Manual page 13

VALVE CAPACITY CURVES
NOTES:
• Capacities for all curves and ratings shown for G20 gas (100% CH4) with specific gravity/relative density of 0.555 at
ANSI Z21.21 standard conditions of 15.6°C/60°F and 1013.5mbar / 406.9 in w.c. / 29.2 in Hg / 14.7 PSI pressure.
• For other gas capacities, multiply the CFH or M3/HR by:
– G25 / 86% CH4, 14% N2
0.612) 1.05
– Natural gas (sp gr/relative density 0.640) 1.07
. Per EN437.
1
PRESSURE DROP
-MBAR -INCHES W.C.
747 300.0
100.0
249
24.9
10.0
2.49 1.0
0.249 0.1
100
2.832
NATURAL GAS FLOW –CFH (CUBIC FEET PER HOUR)
1 PRESSURE DROP FORMULAS PER FLANGE SIZE AND UNIT TYPES:
A.) CFH AND IN W.C.
• 1/2 IN (DN15) = 0.00001690 X (FLOW
• 3/4 IN (DN20) = 0.00000931 X (FLOW
• 1 IN (DN25)
• 1-1/4 IN (DN32) = 0.00000726 X (FLOW
B.) M
3
• 1/2 IN (DN15) = 0.036750 X (FLOW
• 3/4 IN (DN20) = 0.020240 X (FLOW
• 1 IN (DN25)
• 1-1/4 IN (DN32) = 0.015792 X (FLOW
Fig. 7: 1 in. (DN25) On/Off valve capacity curves.
SV2 Series Safety Shut-off Valves
V2F, V2V
(sp gr/relative density
1
1.0 IN (DN25) ON/OFF VALVE CAPACITY CURVES
–M /HR (METERS CUBED PER HOUR)
3
= 0.00000798 X (FLOW
/HR AND MBAR
= 0.017359 X (FLOW
– LP/liquid propane (sp gr/relative density 1.530) 1.66
– G31 / 100% C3H8
1,000
28.32
)
1.9
)
1.9
)
1.9
)
1.9
)
1.9
)
1.9
)
1.9
)
1.9
13
SV2 SERIES SAFETY SHUT-OFF VALVES USER MANUAL
(sp gr/relative density 1.550) 1.67
1
1/2 INCH (DN15) FLANGE
3/4 INCH (DN20) FLANGE
1 INCH (DN25) FLANGE
1-1/4 INCH (DN32) FLANGE
10,000
283.2
MCR37082