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FVMr sELECIIQ PRQU-V_VRL <br /> A. Determine pump capacity: <br /> Gravity Distribution <br /> 1 Minimum suggested is 20 gpm <br /> 2 Maximum suggested is 45 gpm <br /> Perforation Discharges in GPM <br /> Pressure Distibution Head Perforation diameter <br /> 3. a Select number of perforated laterals feet inches_. 732 1�4 <br /> h -Select perforation spacing = feet. <br /> 1.0a 0.56 0.74 <br /> r -Subtract 2 ft.from the rock layer length. 1.5 0.69 0.90 <br /> N,�► ,�� ienRm-2 ft. = feet. 2-Ob aso 1.04 <br /> d Determine the number of spaces between perforations. a Use 1.0 foot single liomes. <br /> Length perf.spacing= ft. + ft. = spaces b Use 2.0 feel for anything else. <br /> V ___spaces + 1 = perforations/lateral <br /> f. Multiply perforations per lateral by number of laterals to <br /> get total number of perforations. Lre-rar-S x pr , «, = perforations. <br /> g- -,-,r, x I:pm�= gpm. <br /> SELECTED PUMP CAPACITY ��,} gpm <br /> B. Determine head requirements: <br /> 1. Elevation difference betwee pump and point of discharge. <br /> =feet <br /> 2. If pumping to a pressure distribution system,five feet for pressure <br /> required at manifold if gravity system,.zero. a.<oba <br /> S feetTool pipe length <br /> 3. Friction loss <br /> a. Enter friction loss table with gpm and pipe diameter. Wet <br /> Read friction loss in feet per 100 feet from table(F-14). p'� �`��ti "�"" <br /> F.L._ 9.91 ft./100 ft of pipe ,. <br /> b. Determine total pipe length from pump to discharge <br /> -------------------- <br /> point. Estimate by adding 25 percent to pipe length for fitting z <br /> loss,or use a fitting loss chart(F-15�feet). <br /> Equivalent pipe length-1.25 timespl�; a length= <br /> _1Q_x 1.25=_�ofeet Friction Loss in Plastic Pipe <br /> c. Calculate total friction loss by multiplying p <br /> friction loss in ft/100 ft by equivalent pipe length. Nominal <br /> Total friction loss= 8 A I x SO +100= y•S feet pipe dia. <br /> 4. Total head required is the sum of elevation difference, Flow Rate 1.5" 2" 3" <br /> special head requirements,and total friction loss. Spm <br /> + y•5 20 2.47 0.73 0.11 <br /> (1) (2) 25 3.73 1.11 0.16 <br /> (3c) 30 5.23 1.55 0.23 <br /> 35 6.96 2.06 0.30 <br /> TOTAL HEAD - S feet 40 8.91 2.64 0.39 <br /> 45 11.07 3.28 0.48 <br /> 50 13.46 3.99 0.58 <br /> C. Pump selection 55 4.7o 0.70 <br /> 60 5.60 0.82 <br /> 65 6.48 0.95 <br /> 70 7.44 1 1.09 <br /> 1. A pump must be selected to deliver at least <br /> gpm (Step A) with at least feet of total head (Step B). <br />