Water Circulation
Pumps & Circulators
PERFORMANCE CURVES
FI Pumps
CI Pumps
HYDRONIC COMPONENTS & SYSTEMS
Do it once.
Do it right.
© Taco Curve Book 300-2.5B
Effective Date: January 31, 2004 (Supersedes: March 31, 2002)
3
HEAD IN FEET
FI/CI Pump Quick Selection Curve
1160 RPM
*
*
*
PC-2125 Rev B
* Pump Models 5013, 6013, and 8013
are available in 1160 rpm as FI only.
FLOW IN GALLONS PER MINUTE
CAPACITY IN LITERS/SEC
HEAD IN KILOPASCALS (KPa)
HEAD IN METERS
4
*
*
*
PC-2124 Rev D
* Pump Models 5013, 6013, and 8013
are available in 1760 rpm as FI only.
FI/CI Pump Quick Selection Curve
1760 RPM
FLOW IN GALLONS PER MINUTE
CAPACITY IN LITERS/SEC
HEAD IN KILOPASCALS (KPa)
HEAD IN METERS
HEAD IN FEET
5
*
PC-2123 Rev B
* Pump Model 5007 is available
in 3500 rpm as FI only.
FI/CI Pump Quick Selection Curve
3500 RPM
FLOW IN GALLONS PER MINUTE
CAPACITY IN LITERS/SEC
HEAD IN KILOPASCALS (KPa)
HEAD IN METERS
HEAD IN FEET
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.
1150
1750
1450
1750
2900
3450
to
to
to
to
to
to
1750
1150
1750
1450
3450
2900
G.P.M.
1.52
Head
2.31
.28
1.21
1.46
.58
1.19
1.42
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.
6
B.H.P.
.58
PUMP FORMULAS
Pressure
(PSI)
=
Head (Feet) x Specific Gravity
2.31
Head
(Feet)
=
Pressure (PSI) x 2.31
Specific Gravity
Vacuum
(Inches of Mercury)
=
Dynamic Suction Lift (Feet) x .883 x Specific Gravity
Horsepower
(Brake)
=
GPM x Head (Feet) x Specific Gravity
3960 x Pump Efficiency
Horsepower
(Water)
=
GPM x Head (Feet) x Specific Gravity
3960
Efficiency
(Pump)
=
Horsepower (Water) x 100 Per Cent
Horsepower (Brake)
NPSH
(Available)
=
Positive Factors – Negative Factors
Affinity Laws: Effect of change of speed or
impeller diameter on centrifugal pumps.
Impeller
Diameter
Change
Speed
Change
GPM Capacity
Ft. Head
BHP
D
Q2 = D22 Q1
D1
D 2
H2 = (D2)2 2 H1
D1
D 3
P2 = (D2)2 2 P1
D1
RPM
Q2 = RPM22 Q1
RPM1
RPM2 2
H2 = (RPM2)2
H1
RPM1
RPM2 3
P2 = (RPM2)2
P1
RPM1
Where Q = GPM, H = Head, P = BHP, D = Impeller Dia., RPM = Pump Speed
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FEBRUARY 15, 2002
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FEBRUARY 14, 2002
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18
FEBRUARY 20, 2002
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FEBRUARY 12, 2002
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FEBRUARY 18, 2002
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FEBRUARY 12, 2002
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FEBRUARY 20, 2002
23
FEBRUARY 20, 2002
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FEBRUARY 12, 2002
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August 31, 2002
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FEBRUARY 19. 2002
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FEBRUARY 20, 2002
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August 31, 2002
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FEBRUARY 2, 2002
47
FEBRUARY 15, 2002
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FEBRUARY 14, 2002
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FEBRUARY 20, 2002
52
FEBRUARY 12, 2002
53
FEBRUARY 18, 2002
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FEBRUARY 12, 2002
55
FEBRUARY 20, 2002
56
FEBRUARY 20, 2002
57
FEBRUARY 12, 2002
58
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August 31, 2002
62
63
FEBRUARY 19, 2002
64
FEBRUARY 20, 2002
65
FEBRUARY 21, 2002
66
August 31, 2002
67
68
FEBRUARY 20, 2002
69
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78
FEBRUARY 13, 2002
79
FEBRUARY 15, 2002
80
81
FEBRUARY 14, 2002
82
FEBRUARY 18, 2002
83
FEBRUARY 12, 2002
84
FEBRUARY 12, 2002
85
86
Do it Once. Do it Right.™
TACO, INC., 1160 Cranston Street, Cranston, RI 02920 Telephone: (401) 942-8000 FAX: (401) 942-2360.
TACO (Canada), Ltd., 6180 Ordan Drive, Mississauga, Ontario L5T 2B3. Telephone: 905/564-9422. FAX: 905/564-9436.
Visit our web site at: http://www.taco-hvac.com
Printed in USA
Copyright 2004
TACO, Inc.