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180R9264 | AQ115586503043en-000903 | 23
© Danfoss | 2023.03
Operating guide
Installation, Operation and Maintenance APP 11-13
5.4 APP 11-13 flow curves at 60 barg (870 psig)
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
12
00
13
00
14
00
15
00
11
00
10
00
90
0
80
0
70
0
12
00
13
00
14
00
15
00
11
00
10
00
90
0
80
0
70
0
APP 11/1500
APP 11/1500
APP 13/1500
APP 13/1500
APP 13/1200
APP 13/1200
APP 11/1200
APP 11/1200
rpm
rpm
m
3
/h
gpm
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
12
00
13
00
14
00
15
00
11
00
10
00
90
0
80
0
70
0
12
00
13
00
14
00
15
00
11
00
10
00
90
0
80
0
70
0
APP 11/1500
APP 11/1500
APP 13/1500
APP 13/1500
APP 13/1200
APP 13/1200
APP 11/1200
APP 11/1200
rpm
rpm
m
3
/h
gpm
5.
Flow at different rpm
If the flow required and the rotation speed (rpm) of the
pump is known, it is easy to select the pump fitting the
application best by using the diagrams below.
Furthermore, these diagrams shows that the
flow can be changed by changing the rotation
speed of the pump. The flow/rpm ratio is
constant, and the “required” flow can be
obtained by changing the rotation speed to a
corresponding value. Thus, the required rpm
can be determined as:
Required rpm =
Required flow x Rated rpm
Rated flow
Data sheet