
With a direct DN 40 intake branch line, these pump types can achieve a suction head of 6 m. Brochure sheet no. 2033 describes how the self priming system we have developed operates with flushed impeller cells. All details apply to raising water at about 18 °C.
If operations are not to suffer under cavitation, the maximum suction head may not be exceeded. Also available are other pump types with other performance ranges.
We’ll be pleased to advise you in the design of your pumps and systems.

Type | Weight approx. kg |
Impeller | Motor kW |
Speed rpm |
Output | |||||||
2 | 4 | 6 | 8 | 10 | 14 | 18 | m³/h | |||||
RS 40s and RS 50s |
90 | o2KR o3KR o4KR |
2.2 2.2 2.2 |
2880 2880 2880 |
25 25.2 25.4 |
23.8 24.8 25.2 |
22.8 24.2 25 |
21.6 23.6 24.8 |
20.5 22.8 24.3 |
18.3 20.6 22.8 |
16 17.4 20.3 |
m m m |
NPSH | 2 | 2.2 | 2.4 | 2.7 | 3 | 3.8 | 5 | m |
RS 40s / RS 50s


Details and Figures are without commitment and subject to changes without prior notice.