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WBV.PU.002.EN VX186QD V2.0
ATTENTION
To protect from high pressure losses and cavitation, heed the advice for laying the suction lines:
•
The maximum suction height is 8 m. This is the maximum distance between the lowest and highest
points of the suction pipe. Observe NPSH.
•
Suction lines whose diameter is too small may restrict the suction capability of the pump. Caution, risk
of cavitation!
If the diameter of the suction pipe is too small, the maximum suction height will be reduced by the loss
of pressure due to pipe friction. Contact us for a calculation
.
•
Suction lines over 30 m must be laid with a slope of at least 2 x pipe diameter in the direction of flow,
ensuring that the pipeline can never run dry
Fig.
"Long suction lines".
Fig. 6: Long suction lines
