I have a waste pump in my basement that is connected via a check valve to
our main waste line. The problem I have is the installed check valve makes a
loud noise when the pump stops.
Please give me any suggestions for a more quiet check valve.
This noise you hear indicates the proper operation of the check valve.
When the pump shuts off, the weight of the water on top of the valve
closes the valve against its base. These components are usually rubber
in which you should hear a dull thudd, however, if the rubber is
hardened, the rubber parts on the valve are worn, or it is just a cheap
check valve, the noise may be exaggerated. Just take out the check
valve and swap it out with a new one from Sears or HD. See if the
noise is reduced. One additional option would be to wrap the PVC with
foam to help further deaden the noise.
You most have lot of back pressure that is why
you hear thud, there are some rubber check valves
that maybe perhaps quieter but not necessarily as good
power check valve I never hear of such thing
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