Answer Posted / rajasekhar

That depends on type of discharge valve if it is gate valve
fluid passes incase of globe valve fluid can't flow.Any
have if we close the discharge valve it can withstand till
reaching of shut off design pressure.As time passes line
get pressurised there is a chance of bursting of valve and
impellers get damaged due to churning of pump.

But finally i want to say is there won't be any effect on
centrifugal pump it keep on running.

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