Centrifugal Pump Accessories Performance Curves. Bell & Gossett Curve Booklet B-860B FOR SYSTEM BALANCING FLOW IN GPM FOR SYSTEM PRESSURE DROP

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1 Bell & Gossett Curve Booklet B-860B Centrifugal Pump Accessories Performance Curves Part of the Triple Duty Valves Equipment Selection Program

2 TABLE OF CONTENTS Useful Pump Formulas Performance Curves (% of Stem Rise) Straight Pattern thru 16 Angle Pattern thru 24 USEFUL PUMP FORMULAS Pressure Head (Feet) x Specific Gravity = (PSI) 2.31 Head Pressure (PSI) x 2.31 = (Feet) Specific Gravity Vacuum Dynamic Suction Lift (Feet) x.883 = (Inches of Mercury) x Specific Gravity Horsepower GPM x Head (Feet) x Specific Gravity = (Brake) 3960 x Pump Efficiency Horsepower GPM x Head (Feet) x Specific Gravity = (Water) 3960 Efficiency = (Pump) NPSH = (Available) Horsepower (Water) x 100 Per Cent Horsepower (Brake) Positive Factors Negative Factors Affinity Laws: Effect of change of speed or impeller diameter on centrifugal pumps. Impeller Diameter Change GPM Capacity Ft. Head BHP Q2 = D2 Q1 D1 2 H2 = ( D2 D1 ) H1 3 P2 = ( D2 D1 ) P1 Speed Change Q2 = RPM2 Q1 RPM1 H2 = ( RPM2 RPM1 2 ) H1 P2 = ( RPM2 RPM1 3 ) P1 Where Q = GPM, H = Head, P = BHP, D = Impeller Dia., RPM = Pump Speed 2

3 Triple Duty Valve Part No & Part No & Model No. 3DV-1NMF Model No. 3DV-1RFF 3

4 Triple Duty Valve Part No & Part No & Model No. 3DV-1-1/4NMF Model No. 3DV-1-1/4RFF 4

5 Triple Duty Valve Part No & Part No & Model No. 3DV-1-1/2NMF Model No. 3DV-1-1/2RFF 5

6 Triple Duty Valve Part No & Part No & Model No. 3DV-2NMF Model No. 3DV-2RFF 6

7 Triple Duty Valve (Straight Pattern) Part No Part No Model No. 3DS-2S Model No. 3DS-2G 7

8 Triple Duty Valve (Straight Pattern) Part No Model No. 3DS-2 1 /2S Part No Model No. 3DS-2 1 /2G 8

9 Triple Duty Valve (Straight Pattern) Part No Part No Model No. 3DS-3S Model No. 3DS-3G 9

10 Triple Duty Valve (Straight Pattern) Part No Part No Model No. 3DS-4S Model No. 3DS-4G 10

11 Triple Duty Valve (Straight Pattern) Part No Part No Model No. 3DS-5S Model No. 3DS-5G 11

12 Triple Duty Valve (Straight Pattern) Part No Part No Model No. 3DS-6S Model No. 3DS-6G 12

13 Triple Duty Valve (Straight Pattern) Part No Part No Model No. 3DS-8S Model No. 3DS-8G 13

14 Triple Duty Valve (Straight Pattern) Part No Part No Model No. 3DS-10S Model No. 3DS-10G 14

15 Triple Duty Valve (Straight Pattern) Part No Part No Model No. 3DS-12S Model No. 3DS-12G 15

16 Triple Duty Valve (Straight Pattern) Part No Model No. 3DS-14S 16

17 Triple Duty Valve (Angle Pattern) Part No Model No. 3D-2S 17

18 Triple Duty Valve (Angle Pattern) Part No Model No. 3D-2 1 /2S 18

19 Triple Duty Valve (Angle Pattern) Part No Model No. 3D-3S 19

20 Triple Duty Valve (Angle Pattern) Part No Model No. 3D-4S 20

21 Triple Duty Valve (Angle Pattern) Part No Model No. 3D-5S 21

22 Triple Duty Valve (Angle Pattern) Part No Model No. 3D-6S 22

23 Triple Duty Valve (Angle Pattern) Part No Model No. 3D-8S 23

24 Triple Duty Valve (Angle Pattern) Part No Model No. 3D-10S 24

25 FOR MORE INFORMATION, CONSULT YOUR LOCAL ITT BELL & GOSSETT REPRESENTATIVE Copyright 2011 ITT Corporation Printed in U.S.A THE ITT ENGINEERED BLOCKS SYMBOL AND ENGINEERED FOR LIFE ARE REGISTERED TRADEMARKS OF ITT MANUFACTURING ENTERPRISES, INC. ITT 8200 N. Austin Avenue Morton Grove, IL Phone: (847) Fax: (847)

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