QF4400SU; edition 2018-11; page 17 of 19
6. Performance charts
6.1. Performance charts of the QF4400SU
Testmedia:
Water at ambient temperature
Type of eccentric shaft: 6°
Discharge pressure:
0 to 4 bar (0 to 58 psi)
Shows approximate flow rates as function of pump rpm.
Please note:
If motor is directly coupled to pump: Pump rpm = motor rpm
If reducer gear drives are used: Pump rpm = motor rpm x reduction ratio
Depending on the selected motor/frequency drive combination, the motor frequency and the resulting
pump speed might differ.
6.2. Performance charts of the QF4400SU-HT
The flow rates showing at the charts above were ascertained with new diaphragms and new valves
under standard conditions after the final assembly of the pump.
0
5
10
15
20
25
30
35
40
0
10
20
30
40
50
60
70
80
90
100
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
0
200
400
600
800
1000
1200
Frequency Motor [Hz]
Fl
ow
r
at
e
[L
/m
in
]
Fl
ow
r
at
e
[L
/h
]
Motor speed [RPM]
0 bar
2 bar
4 bar
