PERFORMANCE CURVES

Water CirculationPumps & Circulators

© Taco Curve Book 300-2.5B

CI PumpsFI Pumps

Effective April 27, 2017 (Supersedes March 31, 2012

3

FLO

W IN

GA

LLO

NS

PE

R M

INU

TE

CA

PAC

ITY

IN L

ITE

RS

/SE

CHEAD IN FEET

HEAD IN METERS

HEAD IN KILOPASCALS (KPa)

PC

-212

5 R

ev B

* P

ump

Mod

els

5013

, 601

3, a

nd 8

013�

are

ava

ilabl

e in

116

0 rp

m a

s F

I onl

y.

*

*

*

FI/C

I Pum

p Qu

ick

Sele

ctio

n Cu

rve

1160

RPM

4

PC

-212

4 R

ev D

FLO

W IN

GA

LLO

NS

PE

R M

INU

TE

CA

PAC

ITY

IN L

ITE

RS

/SE

C

HEAD IN FEET

HEAD IN METERS

HEAD IN KILOPASCALS (KPa)

*

* P

ump

Mod

els

5013

, 601

3, a

nd 8

013�

are

ava

ilabl

e in

176

0 rp

m a

s F

I onl

y.�

**

FI/C

I Pum

p Qu

ick

Sele

ctio

n Cu

rve

1760

RPM

5

PC

-212

3 R

ev B

FLO

W IN

GA

LLO

NS

PE

R M

INU

TE

CA

PAC

ITY

IN L

ITE

RS

/SE

C

HEAD IN FEET

HEAD IN METERS

HEAD IN KILOPASCALS (KPa)

*

* P

ump

Mod

el 5

007

is a

vaila

ble�

in

350

0 rp

m a

s F

I onl

y.�

FI/C

I Pum

p Qu

ick

Sele

ctio

n Cu

rve

3500

RPM

6

CORRECTION FACTORS FOR OTHER SPEEDS

For speeds other than 1750, hydraulic performance and B.H.P.requirements must be corrected before a selection can be made.

The following multipliers are used to correct performance and B.H.P.

G.P.M. Head B.H.P.

1150 to 1750 1.52 2.31

1750 to 1150 .28

1450 to 1750 1.21 1.46

1750 to 1450 .58

2900 to 3450 1.19 1.42

3450 to 2900 .58

Sizing Procedure

1. Using the proper multipliers correct G.P.M. and head.2. Make pump selection as usual using corrected performance.3. Determine max. B.H.P. requirement for pump selected.4. Correct B.H.P. using multiplier, to lower speed.5. Select motor based on Step 4. Use service factor if applicable.

7

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 x Specific Gravity(Inches of Mercury)

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)

Affinity Laws: Effect of change of speed orimpeller diameter on centrifugal pumps.GPM Capacity Ft. Head BHP

ImpellerDiameter Q2 = D2 Q1 H2 = (D2) 2 H1 P2 = (D2) 2 P1

Change

SpeedChange

Q2 = RPM2 Q1 H2 = (RPM2)2 H1 P2 = (RPM2)2 P1

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

D22

D1

D22

D11

2 DD22

DD11

3

RPM2

RPM1

RPM2

RPM1

2 RPM2

RPM1

3

8

9

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

11

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

15

16

FEBRUARY 14, 2002

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

19

FEBRUARY 12, 2002

20

FEBRUARY 18, 2002

21

FEBRUARY 12, 2002

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

30

FEBRUARY 19. 2002

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

32

FEBRUARY 21, 2002

33

34

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

36

37

38

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

40

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

43

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

45

46

FEBRUARY 2, 2002

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

49

FEBRUARY 14, 2002

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

65

FEBRUARY 21, 2002

66

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

68

FEBRUARY 20, 2002

69

70

71

73

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

76

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

78

FEBRUARY 13, 2002

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

82

FEBRUARY 18, 2002

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

NOTE: CI SERIES NOT AVAILABLE ABOVE 60HP

November 1, 2010

CURVES BASED ON CLEAR WATERWITH SPECIFIC GRAVITY OF 1.0

November 1, 2010

SEPTEMBER 9, 2009