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� ��v�� �� � �. r. ` <br /> '� " OSTP Pump Selection Design UNIVERSITY <br /> Minnesoda P+ollution Worksheet OF MINNESOTA <br /> Control r <br /> 10. Equivatent length of pipe fittings. _ -- <br /> Section f0 is for Co(lection Systems ONLY and does NOT need to 6e ���- , - -• - -- - <br /> completed for individua/subsurface sewage treatment systems. �` > <br /> � <br /> Quantity X Equivalent Length Factor=Equivalent Length :Gate�/alwe 'I.ff7 'i_'38 ��E� <br /> �„n' <br /> Fitting Type Quantlty Equivairnt Equivalent �45 Lteg Elbow 2•15 2.7�; .�.Q9. <br /> Length Factor Length(ft) <br /> ee- y <br /> Gate Valve X 6 <br /> X .Angle Yalwe 20:'l0 ?.�:�80 38i� <br /> 90 Deg Elbow ` <br /> 45 Deg Elbow X ` 8utxerhy Nalue - 7.:"75 Y.1.90 <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 Vatve X ` Williams Equation. See Advanced Designs for SSfS <br /> Angle Valve X = for equation. Other pipe material may require <br /> different equivalent length factors. Verify other <br /> Globe Valve X ` equivalent length factors with pipe material <br /> Butterfly Valve X � manufacturer. <br /> Valve 10 X = NOTE: System installer should rnntact system <br /> designer if the number of fitdngs varies from the <br /> Valve 11 X ` desian to the actual instaltati�n. <br /> �� _ _ __ _ - - - __ <br /> A. Sum of Equivalent Length due to pipe Httings: ft <br /> Hazen-Williams Equation for h <br /> B. Total Pipe Length =Supply Pipe Length(5.6)+Equivalent Pipe Length (9.A.) h _ 1�.5 � ��_�,�1,85 *L <br /> �� ft +��ft s �ft .f D4.87 <br /> �, Hazen•Williams friction Loss due to pipe fittings and suppty-pipe(hf): Q in gpm L in feet D in inches t=130 <br /> (10.5 j Pipe DiametEr`'"�) X ( Flow Rate + Constant)�'°� X Total Pipe Length (1D.6) <br /> (1D.5 '•' ��i"a.e�� X (C�9Pm+130)�.es x ��ft =�ft _ <br /> 11. Tota(Head requirement is the sum of the Elevation Dffference (Line 3),the Distrtbution Head Loss(Line 4),Additional Head Loss(Line 5), , <br /> and either Supply Friction Loss(Line 9),or Priction Loss from the Suppty Pipe and Pipe Fittings for collection systems(Line 10.C) <br /> NOTE:Suppty Friction Loss(Line 8)need ONLY be used if NOT a col(ectian system. . , <br /> NOTE:Friction Loss from!he Supp[y Pipe and Pipe Fittings(Line 9.C)need ONLY 6e used if system u a cofiection system, _. . . <br /> 10.0 ft + 5.0 ft + �ft + 1.1 ft =. 16.1 ft <br /> 3. PUMP SELECTION <br /> A pump must be selected to detiver at least 3 3 GPM(Line 1 or Line 2)with at least ��] feet of total head. <br /> Commenu: Pump type � <br /> I <br /> r 6 r�`� � l(//l� ) ;1 <br /> , l 1.�� � / ,o <br /> � ° <br /> �(i� ��'� ' <br /> � �`r �v�� � : <br /> � �� <br /> � � <br /> C��� <br /> ; <br /> }. <br /> � <br /> . ;; <br />