Flow At Di Erent Rpm; App 11-13 Ow Curves At 60 Barg (870 Psig) - Danfoss APP S 11 Series Installation, Operation And Maintenance Manual

Operating guide
Data sheet
5.

Flow at di erent rpm

© Danfoss | 2024.06
Installation, Operation and Maintenance APP 11 - 13 / APP S 11 - 13
If the ow required and the rotation speed (rpm) of the
pump is known, it is easy to select the pump tting the
application best by using the diagrams below.

5.4 APP 11-13 ow curves at 60 barg (870 psig)

3
m /h
15.0
14.0
13.0
12.0
11.0
10.0
9.0
8.0
7.0
6.0
5.0
4.0
gpm
65.0
60.0
55.0
50.0
45.0
40.0
35.0
30.0
25.0
20.0
Furthermore, these diagrams shows that the
ow can be changed by changing the rotation
speed of the pump. The ow/rpm ratio is
constant, and the "required" ow can be
obtained by changing the rotation speed to a
corresponding value. Thus, the required rpm
can be determined as:
Required ow x Rated rpm
Required rpm =
Rated ow
APP 13/1200
APP 11/1200
APP 13/1200
APP 11/1200
180R9264 | AQ115586503043en-000904 | 23
APP 13/1500
APP 11/1500
rpm
APP 13/1500
APP 11/1500
rpm