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Light Oil Suction Flow Velocity

Recommended suction flow velocity when pumping light oils

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Capacity problems, cavitation and higher power consumption in pumps, are often the result of conditions on the suction sides of the pumps.

In general - as a rule of thumb - for light oils, keep the suction fluid flow speed below the following values:

Pipe bore		Light Oil Velocity
inches	mm	m/s	ft/s
1	25	0.5	1.5
2	50	0.5	1.5
3	75	0.5	1.6
4	100	0.55	1.8
6	150	0.6	2
8	200	0.7	2.3
10	250	0.9	3
12	300	0.9	3

More about NPSH suction problems can be read here:

Cavitation and NPSH - an introduction to cavitation and Net Positive Suction Head NPSH

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Related Topics

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