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i I <br /> F-17 <br /> PUMP SELECTION PROCEDURE <br /> ENO KWORAT" OF A KWORAT® LATERAL <br /> A. Determine pump capacity. �G,..CW.., <br /> Gravity Distribution <br /> 1. Minimum suggested is 600 gallons per hour(10 gpm)to stay ahead of <br /> r=T all <br /> water use rate. "''`".""'�1fy.iiWj <br /> 2. Maximum suggested for delivery to a drop box of a home system is 2,700 `..�.••�auw.►ww.w�, <br /> as cw New t.0 <br /> gallons per hour(45 gpm)to prevent build-up of pressure in drop box. J., ; -y �..M :•I.E... <br /> N Noor 6q. <br /> Pressure Distibution Cie"sw.u,. <br /> 3.a. Select number of perforated laterals <br /> b. Select perforation spacing= feet. �.,;, <br /> C. Subtract 2 ft.from the rock layer length. <br /> x�xLyv_-2 ft.= feet. <br /> d. Determine the number of spaces between perforations. <br /> Length pert.spacing= ft.+ ft.= spaces Requ;ed Pedor.tion Duche <br /> �pere. spaces+1= perforations/lateral !n g ­10(gP <br /> f. Multiply perforations per lateral by number of laterals to D,Ht age �� <br /> get total number of perforations. �.�.►. x-- = perforations. (feet) ,a <br /> g' !� 0.56 �,Q,.7 I, <br /> SELECT)6'D PUMP CAPACITY ` Q gpm 2.Ob 0.$0 1.04 <br /> B.Determine head requirements: <br /> 1. Elevation difference be�fen P­Tp and int of discharge. a.Use for single family homes <br /> g .��//�� __P Po r8 b.Use for all other applications <br /> "Pt <br /> 2. If pumping to a pressure distribuuun system,five feet for pressure <br /> required at manifold if gravity s tem,zero. <br /> � /J <br /> 3. Friction loss feet <br /> a. Enter friction loss table with gpm and pipe diameter. ela � E- Ape Length <br /> Read friction loss in feet per 100 feet from table. <br /> F.L.= Z•(o ft./100 ft of pipe Point of Discharge <br /> b. Determine total pipe length from pump to discharge Elevation Diffeence <br /> point. Add 25 percent to pipe length for fitting pip <br /> loss,or use a fitting loss chart. Equivalent pipe <br /> length-1.25 times pipe length= i F-18b <br /> 136 x 1.25=1&3, feet 1.5 inch 2.0 inch 3.0 inch <br /> c. Calculate total friction loss by multiplying �� <br /> friction loss in ft/100 ft by equivalent pipe length. 12 10 ►oon pipe <br /> Total friction loss= _ x Z.L�`� +100=1 feet 0.69 0.20 <br /> 12 0.96 0.28 <br /> 4. Total head required is the sum of elevation difference, 14 1.28 0.38 <br /> special head requirements,and total friction loss. 16 1.63 0.48 <br /> 18 2.03 0.60 <br /> 20 2.47 0.73 0.11 <br /> • + + `F• 25 3.73 1.11 0.16 <br /> 00 (2) (3c) 30 5.23 1.55 0.23 <br /> 7.90 2. 0.30 <br /> _Q� 14.07 �'� 0.39 <br /> TOTAL HEAD feet 45� wI 14.73 3.28 0.48 <br /> 50 3.99 0.58 <br /> C. Pump selection 60 5.60 0.82 <br /> I. A pump must be selected o deliver at least <br /> �� gpm (Step A) with at least feet of total head(Step B). <br />