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V4943/V8943B,C,N; V4944/V8944B,C,L,N REGULATING DIAPHRAGM GAS VALVES
5 65-0214—08
Fig. 3. Capacity vs. pressure drop of Natural Gas
curves for 1-1/4 in. valve.
Fig. 4. Capacity vs. pressure drop of Natural Gas
curves for 1-1/2 in. valve.
Fig. 5. Capacity vs. pressure drop of Natural Gas
curves for 2 in. valve.
Fig. 6. Capacity vs. pressure drop of LP Gas
curves for 1 in. valve.
M23377
1.25 INCH V4/8944B/N REGULATION AREA
0.1
1
10
100
FLOW NATURAL GAS (CFH)
PRESSURE DROP (IN. WC)
100
1000
10000
PO < 2.5 IN.
ANY PO
PO > 2 IN.
M23378
1.5 INCH V4/8944B/N REGULATION AREA
0.1
1
10
100
100 1000 10000
FLOW NATURAL GAS (CFH)
PRESSURE DROP (IN. WC)
PO < 2.5 IN.
ANY PO
PO > 2 IN.
M23379
2 INCH V4/8944B/N REGULATION AREA
0.1
1
10
100
100 1000 10000
FLOW NATURAL GAS (CFH)
PRESSURE DROP (IN. WC)
ANY PO
PO > 2 IN.
M23380
1 INCH V4/8944C/L REGULATION AREA
0.1
1
10
100
100 1000 10000
FLOW LP GAS (CFH)
PRESSURE DROP (IN. WC)
ANY PO
PO < 7 IN.