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OSTP Pump Selection Desi�n UNIVERSITY � "�� <br /> MinnesotaPollution Worksheet OF MINNESOTA ;�F; ^' <br /> Control A enc . � .._:.:�,,�y <br /> 10. Equivalent length of pipe fittings. Equivatent Length Fxtors(ft.)far PVC Pipe <br /> Fittings <br /> Section 10 is for Collection Systems ONLY ond dces NOT need[o be <br /> completed for individua(wbwrface sewage treotment systems. Fitting Type ��ameter(in.) <br /> 114 2 3 <br /> Quantity X Equivalent Length Factor=Equivdlent Length Gate Valve i.07 7.38 2.oa <br /> 90 Deg Elbow 4.03 5.17 7.67 <br /> Fitting Type Quantity Equivalent Equivalent 45 Deg Elbow 2.15 2.76 4.09 <br /> Length Factor Length(ft) Tee-Flow Thru 2.68 3.45 5.11 <br /> Tee- ranc ow 8. 1 . 1 . <br /> Gate Valve X - Swing Check Valve 13.40 77.20 25.50 <br /> 90 Deg ElbOw X = Angle Valve 20.10 25.80 38.40 <br /> 45 Deg Elbow X � Gtobe Valve 45.60 58.60 86.90 <br /> Butterfly Valve - 7.75 11.50 <br /> Tee-Flow Thru X = <br /> Tee-Branch Flow X = NOTE:Equivalent length values for PVC pipe <br /> fittings are based on calculations using the Hazen- <br /> Swing Check Valve X ` Williams Equation. See Advanced Designs for SSTS <br /> Angle Valve X - for equation. Other pipe material may require <br /> Globe Valve X _ different equivalent length factors. Veriry other <br /> equivalent length factors with pipe material <br /> Buttertly Valve X = manufacturer. <br /> Valve 10 X = NOTE:System installer should contad system <br /> designer if the number of fittings varies from the <br /> Valve 11 X ' desiQn to the ac[ual instaltation. <br /> A. Sum of Equivalent Length due to pipe fittings: �-�ft <br /> Hazen-Williams Equallon for h <br /> B. Total Pipe Length =Supply Pipe Length(5.B)+Equivalent Pipe Length(9.A.) 1�.5 <br /> C� f� + �� ft -��ft j'.r - D-�.s� � �Q-C)t.ss �L <br /> C, Hazen-Williams friction loss due to pipe fittings and supply pipe(h�): Q in gpm L in feet D in inches C=130 <br /> (10.5 .- Pipe Diameter'�87) X (Flow Rate + Constant)'�°5 X Total Pipe Length(10.6) <br /> {10.5 + �_�in4.a�� X ���gpm+130},86 x �ft `��ft <br /> �1• Total Head requirement is the wm of the Elevatfon Difference (Line 3),the Distribution Head Loss(Line 4),Additional Head Loss(Line 5), <br /> and either SuppEy Friction Loss(Line 9),or Friction Loss from the Suppty Pipe and Pipe Fittings for collection systems(line 10.C) <br /> NOTE:Supply Friction Loss(Line 8)need ONLY be used if NOT a tolfection system. <br /> NOTE:Friction Loss from the Se�ppiy Pipe and Pipe Fettings(tine 9.C)need ONLY be used if system is c cotfection system. <br /> 13.0 ft + 5.0 ft + ��n + 3.5 ft = 21.5 ft <br /> 3. PUMP SELECTION <br /> A pump must be selected to deliver at least 36 GPM(Line 1 or Line 2)with at least 22 feet of total head. <br /> Comments: Pump type <br />