I have a sump pit in my basement. It pumps water up to the main sewage
drain pipe through a one way valve. The problem is that every time it
operates, the valve makes a loud "thump" as it closes. Is this normal,
or is there a way to lessen the noise. Thanks.
Be sure you have a small hole drilled (and not clogged) in the discharge
pipe, below the check valve, to prevent air lock. Here's a previous
message on that subject:
I had a Ejector pumped replaced in my basement a few months back. The last few
days the pump makes a squeeling type noise right before it shuts off. Could
this be because the installer did not drill this hole?
OK, so if I understand this correctly, the hole should be drilled in
the pipe right above the connection to the pump. The section of pipe
with the hole will still be in the sump pit, so possible water
shooting out of the hole should not be a problem. My next question is
do you think the one-way valve has been damaged by several years of
slamming shut from excessive vacuum? Perhaps it best to replace the
valve. Thanks for the advice.
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