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If pump suction valve is throttled, what would be the
result?
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Answer Posted / bn
Depends !
The differential pressure across the pump will be increased.
The pump flow will decrease. How much it decreases depends
on the pump type. If the suction is throttled
sufficiently, pseudo-cavitation and/or cavitation will
occur.
Much better to the throttle the discharge providing it
isn't a pd pump. Much better, more efficient, to size the
pump correctly in the first place !
Approximate system parameters gets you an approximate
(usually inefficient) pump !
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