Product Manual

How to read the curve charts
SQ, SQE, CU 331, and SP
16
75
16. How to read the curve charts
TM05 0229 10112
0 1 2 3 4 5
Q [US GPM]
0.00
0.02
0.04
0.06
0.08
[hp]
P2
0
10
20
30
40
Eff
[%]
0.00
0.02
0.04
0.06
[kW]
P2
P2
Eff
0 1 2 3 4 5 6 7
Q [US GPM]
0
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
[ft]
H
0
50
100
150
200
250
300
350
400
[m]
H
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
Q [m³/h]
5S
ISO 9906 Annex A
60 Hz, SF 1.15
-13
-22
-18
-26
-39DS
-48DS
-31
-9
Number of stages.
First figure: number of stages;
second figure: number of
reduced-diameter impellers.
The efficiency curve shows
the efficiency of the pump.
The efficiency curve is an
average curve of all the
pump types shown in the
chart.
The efficiency of pumps with
reduced-diameter impellers
is approx. 2 % lower than the
efficiency curve shown in the
chart.
Pump type, number of
poles and frequency.
QH curve for the individual
pump. The bold curves
indicate the recommended
performance range for best
efficiency.
The power curves indicate
pump input power per stage.
Curves are shown for
complete (1/1) and for
reduced-diameter (2/3)
impellers.