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TFP1420
200 400 1000 3000200060010050
FLOW RATE IN GALLONS PER MINUTE (GPM)
3.0
NOMINAL PRESSURE DROP IN POUNDS PER SQUARE INCH (PSI)
0.8
0.4
0.5
0.6
0.7
1.0
0.9
2.0
6.0
4.0
5.0
9.0
7.0
8.0
10.0
15.0
FLOW RATE IN LITRES PER MINUTE (LPM)
200 1000600400
(1 GPM = 3,785 LPM)
2000 70003000 5000 10000
(1 PSI = 0,06895 BAR)
NOMINAL PRESSURE DROP IN BAR
0,040
0,030
0,050
0,080
0,060
0,070
0,090
0,100
0,200
0,800
0,400
0,300
0,600
0,500
0,700
1,000
0,900
2 INCH (DN50)
1-1/2 INCH (DN40)
6 INCH (DN150)
4 INCH (DN100)
3 INCH (DN80)
8 INCH (DN200)
GRAPH A
DELUGE AND CHECK VALVE COMBINATION*
— NOMINAL PRESSURE LOSS VERSUS FLOW —
* Model DV-5 Deluge Valve combined with Model CV-1FR Riser Check Valve
**1-1/2 inch Model DV-5 Deluge Valve combined with 2 inch Model CV-1FR Riser Check Valve
The approximate friction loss, based on the Hazen and Williams formula and expressed in equivalent length of pipe with C=120, is as
follows:
15 feet of 1-1/2 Sch. 40 pipe for the 1-1/2 inch Valve Combination** calculated on a typical flow rate of 100 GPM.
28 feet of 2 inch Sch. 40 pipe for the 2 inch Valve Combination* calculated on a typical flow rate of 175 GPM.
37 feet of 3 inch Sch. 40 pipe for the 3 inch Valve Combination* calculated on a typical flow rate of 350 GPM.
48 feet of 4 inch Sch. 40 pipe for the 4 inch Valve Combination* calculated on a typical flow rate of 600 GPM.
73 feet of 6 inch Sch. 40 pipe for the 6 inch Valve Combination* calculated on a typical flow rate of 1500 GPM.
103 feet of 8 inch Sch. 40 pipe for the 8 inch Valve Combination* calculated on a typical flow rate of 2500 GPM.
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