For the last few weeks, our toilet refill pipes makes a loud groaning /
moaning kind of noise when filling up after a flush. This goes away if I
close the refill valve tap to a small trickle. Was working fine in the past.
What could be the cause. The whole house walls echo with the noise.
acting like a whistle... air in a whistle is cut off and makes the
noise.. the same thing with water in a toilet, faucet, or valve...
something is loose in there due to wear and needs to either be tightened
or replaced... the ball cock valve is bad and should be replaced...
hope this helps.
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