Tri

ple

Du

ty®

Valv

es

Centrifugal Pump AccessoriesPerformance Curves

FOR SYSTEM BALANCING

FOR SYSTEM PRESSURE DROP

FLOW IN GPM

FLOW IN GPM

∆P

FE

ET

OF

WA

TE

R

MINIMUM READING OF 3 FEET OFPRESSURE DROP REQUIRED FORACCURATE FLOW DETERMINATION.

Part of the

Equipment Selection Program

Bell & Gossett®

Curve Booklet B-860B

2

TABLE OF CONTENTS

Useful Pump Formulas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Performance Curves (% of Stem Rise)

Straight Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 thru 16

Angle Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 thru 24

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 = Horsepower (Water) x 100 Per Cent(Pump) Horsepower (Brake)

NPSH = Positive Factors – Negative Factors(Available)

GPM Capacity Ft. Head BHP

ImpellerDiameterChange

SpeedChange

USEFUL PUMP FORMULAS

Affinity Laws: Effect of change of speed or impeller diameter on centrifugal pumps.

Where Q = GPM, H = Head, P = BHP, D = Impeller Dia., RPM = Pump Speed

Q2 = Q1D2

D1

Q2 = Q1RPM2

RPM1H2 = ( )2H1

RPM2

RPM1P2 = ( )3P1

RPM2

RPM1

P2 = ( )3P1D2

D1H2 = ( )2H1

D2

D1

Triple Duty Valve®

PERFORMANCE CHARACTERISTICSPart No. 132200 & 132208 Model No. 3DV-1NMFPart No. 132201 & 132209 Model No. 3DV-1RFF

FOR SYSTEM BALANCING

FOR SYSTEM PRESSURE DROP

FLOW IN GPM

FLOW IN GPM

3

∆P

FE

ET

OF

WA

TE

R

BELL & GOSSETT

Triple Duty Valve®

PERFORMANCE CHARACTERISTICSPart No. 132202 & 132210 Model No. 3DV-1-1/4NMFPart No. 132203 & 122211 Model No. 3DV-1-1/4RFF

FOR SYSTEM BALANCING

FOR SYSTEM PRESSURE DROP

FLOW IN GPM

FLOW IN GPM

4

∆P

FE

ET

OF

WA

TE

R

BELL & GOSSETT

Triple Duty Valve®

PERFORMANCE CHARACTERISTICSPart No. 132204 & 132212 Model No. 3DV-1-1/2NMFPart No. 132205 & 132213 Model No. 3DV-1-1/2RFF

FOR SYSTEM BALANCING

FOR SYSTEM PRESSURE DROP

FLOW IN GPM

FLOW IN GPM

5

∆P

FE

ET

OF

WA

TE

R

BELL & GOSSETT

Triple Duty Valve®

PERFORMANCE CHARACTERISTICSPart No. 132206 & 132214 Model No. 3DV-2NMFPart No. 132207 & 132215 Model No. 3DV-2RFF

FOR SYSTEM BALANCING

FOR SYSTEM PRESSURE DROP

FLOW IN GPM

FLOW IN GPM

6

∆P

FE

ET

OF

WA

TE

R

BELL & GOSSETT

Triple Duty Valve®

(Straight Pattern)PERFORMANCE CHARACTERISTICS

Part No. 132121 Model No. 3DS-2SPart No. 132150 Model No. 3DS-2G

FOR SYSTEM BALANCING

FOR SYSTEM PRESSURE DROP

FLOW IN GPM

FLOW IN GPM

7

∆P

FE

ET

OF

WA

TE

R

MINIMUM READING OF 3 FEET OFPRESSURE DROP REQUIRED FORACCURATE FLOW DETERMINATION.

BELL & GOSSETT

Triple Duty®

Valve (Straight Pattern)PERFORMANCE CHARACTERISTICS

Part No. 132122 Model No. 3DS-21/2SPart No. 132151 Model No. 3DS-21/2G

FOR SYSTEM BALANCING

FOR SYSTEM PRESSURE DROP

FLOW IN GPM

FLOW IN GPM

8

∆P

FE

ET

OF

WA

TE

R

MINIMUM READING OF 3 FEET OFPRESSURE DROP REQUIRED FORACCURATE FLOW DETERMINATION.

BELL & GOSSETT

Triple Duty®

Valve (Straight Pattern)PERFORMANCE CHARACTERISTICS

Part No. 132123 Model No. 3DS-3SPart No. 132152 Model No. 3DS-3G

FOR SYSTEM BALANCING

FOR SYSTEM PRESSURE DROP

FLOW IN GPM

FLOW IN GPM

9

∆P

FE

ET

OF

WA

TE

R

MINIMUM READING OF 3 FEET OFPRESSURE DROP REQUIRED FORACCURATE FLOW DETERMINATION.

BELL & GOSSETT

Triple Duty®

Valve (Straight Pattern)PERFORMANCE CHARACTERISTICS

Part No. 132124 Model No. 3DS-4SPart No. 132153 Model No. 3DS-4G

FOR SYSTEM BALANCING

FOR SYSTEM PRESSURE DROP

FLOW IN GPM

FLOW IN GPM

10

∆P

FE

ET

OF

WA

TE

R

MINIMUM READING OF 3 FEET OFPRESSURE DROP REQUIRED FORACCURATE FLOW DETERMINATION.

BELL & GOSSETT

Triple Duty®

Valve (Straight Pattern)PERFORMANCE CHARACTERISTICS

Part No. 132125 Model No. 3DS-5SPart No. 132154 Model No. 3DS-5G

FOR SYSTEM BALANCING

FOR SYSTEM PRESSURE DROP

FLOW IN GPM

FLOW IN GPM

11

∆P

FE

ET

OF

WA

TE

R

MINIMUM READING OF 3 FEET OFPRESSURE DROP REQUIRED FORACCURATE FLOW DETERMINATION.

BELL & GOSSETT

Triple Duty®

Valve (Straight Pattern)PERFORMANCE CHARACTERISTICS

Part No. 132126 Model No. 3DS-6SPart No. 132155 Model No. 3DS-6G

FOR SYSTEM BALANCING

FOR SYSTEM PRESSURE DROP

FLOW IN GPM

FLOW IN GPM

12

∆P

FE

ET

OF

WA

TE

R

MINIMUM READING OF 3 FEET OFPRESSURE DROP REQUIRED FORACCURATE FLOW DETERMINATION.

BELL & GOSSETT

Triple Duty®

Valve (Straight Pattern)PERFORMANCE CHARACTERISTICS

Part No. 132127 Model No. 3DS-8SPart No. 132156 Model No. 3DS-8G

FOR SYSTEM BALANCING

FOR SYSTEM PRESSURE DROP

FLOW IN GPM

FLOW IN GPM

13

∆P

FE

ET

OF

WA

TE

R

MINIMUM READING OF 3 FEET OFPRESSURE DROP REQUIRED FORACCURATE FLOW DETERMINATION.

BELL & GOSSETT

Triple Duty®

Valve (Straight Pattern)PERFORMANCE CHARACTERISTICS

Part No. 132128 Model No. 3DS-10SPart No. 132157 Model No. 3DS-10G

FOR SYSTEM BALANCING

FOR SYSTEM PRESSURE DROP

FLOW IN GPM

FLOW IN GPM

14

∆P

FE

ET

OF

WA

TE

R

MINIMUM READING OF 3 FEET OFPRESSURE DROP REQUIRED FORACCURATE FLOW DETERMINATION.

BELL & GOSSETT

Triple Duty®

Valve (Straight Pattern)PERFORMANCE CHARACTERISTICS

Part No. 132129 Model No. 3DS-12SPart No. 132158 Model No. 3DS-12G

FOR SYSTEM BALANCING

FOR SYSTEM PRESSURE DROP

FLOW IN GPM

FLOW IN GPM

15

∆P

FE

ET

OF

WA

TE

R

MINIMUM READING OF 3 FEET OFPRESSURE DROP REQUIRED FORACCURATE FLOW DETERMINATION.

BELL & GOSSETT

Triple Duty®

Valve (Straight Pattern)PERFORMANCE CHARACTERISTICS

Part No. 132120 Model No. 3DS-14S

FOR SYSTEM BALANCING

FOR SYSTEM PRESSURE DROP

FLOW IN GPM

FLOW IN GPM

16

∆P

FE

ET

OF

WA

TE

R

MINIMUM READING OF 3 FEET OFPRESSURE DROP REQUIRED FORACCURATE FLOW DETERMINATION.

BELL & GOSSETT

Triple Duty®

Valve (Angle Pattern)PERFORMANCE CHARACTERISTICS

Part No. 132131 Model No. 3D-2S

FOR SYSTEM BALANCING

FOR SYSTEM PRESSURE DROP

FLOW IN GPM

FLOW IN GPM

17

∆P

FE

ET

OF

WA

TE

R

MINIMUM READING OF 3 FEET OFPRESSURE DROP REQUIRED FORACCURATE FLOW DETERMINATION.

BELL & GOSSETT

Triple Duty®

Valve (Angle Pattern)PERFORMANCE CHARACTERISTICS

Part No. 132132 Model No. 3D-21/2S

FOR SYSTEM BALANCING

FOR SYSTEM PRESSURE DROP

FLOW IN GPM

FLOW IN GPM

18

∆P

FE

ET

OF

WA

TE

R

MINIMUM READING OF 3 FEET OFPRESSURE DROP REQUIRED FORACCURATE FLOW DETERMINATION.

BELL & GOSSETT

Triple Duty®

Valve (Angle Pattern)PERFORMANCE CHARACTERISTICS

Part No. 132133 Model No. 3D-3S

FOR SYSTEM BALANCING

FOR SYSTEM PRESSURE DROP

FLOW IN GPM

FLOW IN GPM

19

∆P

FE

ET

OF

WA

TE

R

MINIMUM READING OF 3 FEET OFPRESSURE DROP REQUIRED FORACCURATE FLOW DETERMINATION.

BELL & GOSSETT

Triple Duty®

Valve (Angle Pattern)PERFORMANCE CHARACTERISTICS

Part No. 132134 Model No. 3D-4S

FOR SYSTEM BALANCING

FOR SYSTEM PRESSURE DROP

FLOW IN GPM

FLOW IN GPM

20

∆P

FE

ET

OF

WA

TE

R

MINIMUM READING OF 3 FEET OFPRESSURE DROP REQUIRED FORACCURATE FLOW DETERMINATION.

BELL & GOSSETT

Triple Duty®

Valve (Angle Pattern)PERFORMANCE CHARACTERISTICS

Part No. 132135 Model No. 3D-5S

FOR SYSTEM BALANCING

FOR SYSTEM PRESSURE DROP

FLOW IN GPM

FLOW IN GPM

21

∆P

FE

ET

OF

WA

TE

R

MINIMUM READING OF 3 FEET OFPRESSURE DROP REQUIRED FORACCURATE FLOW DETERMINATION.

BELL & GOSSETT

Triple Duty®

Valve (Angle Pattern)PERFORMANCE CHARACTERISTICS

Part No. 132136 Model No. 3D-6S

FOR SYSTEM BALANCING

FOR SYSTEM PRESSURE DROP

FLOW IN GPM

FLOW IN GPM

22

∆P

FE

ET

OF

WA

TE

R

MINIMUM READING OF 3 FEET OFPRESSURE DROP REQUIRED FORACCURATE FLOW DETERMINATION.

BELL & GOSSETT

Triple Duty®

Valve (Angle Pattern)PERFORMANCE CHARACTERISTICS

Part No. 132137 Model No. 3D-8S

FOR SYSTEM BALANCING

FOR SYSTEM PRESSURE DROP

FLOW IN GPM

FLOW IN GPM

23

∆P

FE

ET

OF

WA

TE

R

MINIMUM READING OF 3 FEET OFPRESSURE DROP REQUIRED FORACCURATE FLOW DETERMINATION.

BELL & GOSSETT

Triple Duty®

Valve (Angle Pattern)PERFORMANCE CHARACTERISTICS

Part No. 132138 Model No. 3D-10S

FOR SYSTEM BALANCING

FOR SYSTEM PRESSURE DROP

FLOW IN GPM

FLOW IN GPM

24

∆P

FE

ET

OF

WA

TE

R

MINIMUM READING OF 3 FEET OFPRESSURE DROP REQUIRED FORACCURATE FLOW DETERMINATION.

BELL & GOSSETT

FOR MORE INFORMATION, CONSULT YOUR LOCAL

ITT BELL & GOSSETT REPRESENTATIVE

ITT8200 N. Austin AvenueMorton Grove, IL 60053Phone: (847) 966-3700Fax: (847) 966-9052www.bellgossett.com

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