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TFP1020 Page 5 of 20 <br /> FLOW RATE IN LITRES PER MINUTE(LPM) <br /> (1 GPM=3.785 LPM) <br /> 500 700 1000 2000 3000 5000 7000 10000 <br /> 9.0 <br /> 0,60 <br /> 8.0 <br /> 7.0 0,50 <br /> JF <br /> 6.0 <br /> 0,40 <br /> IF <br /> 5. If <br /> 0,30 <br /> 4.0 JF <br /> 1=4 <br /> 3.0 <br /> 0,20 <br /> Co <br /> x <br /> z 2.0Uj <br /> Q2� <br /> ¢ U� <br /> 7 Q <br /> O� 0,10 C° <br /> z <br /> aw goy �o� 0,09 a <br /> o �� p= 0,08 xo M <br /> Z) 1.0 2V U� �y� 0,07 �m <br /> 0- ti = _ Mo <br /> Z 0.9 ti d 0,06 w o <br /> d 0.8 U ¢W <br /> 0 0.7 0,05EC ¢a <br /> 0.6 0,04 0 <br /> Co <br /> O <br /> Z <br /> w 0.5 <br /> Q <br /> a <br /> z 0.4 <br /> O <br /> Z <br /> 0.3 <br /> 0,02 <br /> 0.2 <br /> 0,01 <br /> 0.1 <br /> 100 200 300 400 500 700 1000 2000 3000 <br /> FLOW RATE IN GALLONS PER MINUTE(GPM) <br /> The approximate friction losses,based on the Hazen and Williams formula and expressed in equivalent length of Schedule 40 pipe <br /> with C=100 are as follows: <br /> 2.2 feet for the 2-1/2 inch valve at a typical flow rate of 250 GPM <br /> 4.9 feet for the 3 inch valve at a typical flow rate of 350 GPM <br /> 8.9 feet for the 4 inch valve at at typical flow rate of 600 GPM <br /> 22 feet for the 6 inch valve at a typical flow rate of 1500 GPM <br /> FIGURE 2 <br /> MODEL DPV-1 DRY PIPE VALVES <br /> —NOMINAL PRESSURE LOSS VERSUS FLOW— <br />