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chiller condensor pump.

we had new strainers fabricated for the sump pit. we are starting up soon and are testing the pumps. when the pumps are started we get good flow from the valve at the bottom of the bell where the secondary strainers are located. when the pumps are shut off it creates a vacuum and air gets sucked in through the valve. Is this normal operation of the condensor pump? I believe this is normal operation and that valve is just breaking the vacuum and water is being sent back to the pit. It does seem like the pump hammers when it is turned off. we removed the strainers and the same situation occurs.


  • Brad White
    Brad White Member Posts: 2,398

    Steve, is this s vertical turbine pump or another type?

    Is there a check valve in the discharge and if so, of what type? (lift type such as Clow or a clapper type for example?)

    What can you tell me about the suction lift, total head and static lift on the discharge? I just need more information to picture it.
    "If you do not know the answer, say, "I do not know the answer", and you will be correct!"

    -Ernie White, my Dad
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