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