Whenever I turn on the water I her banging noise and I hear it again
when I turn the water off. It is only when turning on and off that
the noice. It is a single sound, (not like a constant baning while
running, just one hit).
Any suggestions ?
On a similar subject, turning on my bathroom faucet is noiseless, but
after a few seconds, there is banging/shuddering. Increasing the force
of water shuts it off. Only in bathroom sink. Rarely use 'hot' water
faucet, so this is just the cold one. No noise with shower, toilet, or
other household plumbing. I vaguely recall this has something to do
with "air in the pipes." Is there any simple way to purge them? I
mean, it's no big deal, but annoying.
Actually it has to do with the lack of air not its presence. It is not
clear, but it appears you are talking about water hammer (Assuming you were
trying to say it occurred when you turned the water off). If that is the
case, you can turn off the main then turn on that faucet, turn on a faucet
lower than that one. Maybe one in the basement or even outside) let it
drain until it stops. Then close the faucets and turn the main back on.
Slowly crack the original faucet and wait until the air stops coming out.
Turning on a lower faucet. That may be difficult, There is nothing
really lower. I am on a slab, no bacement or crawl. I believe there
may be a facuet by the water meter under the bathroom sink (don't ask
why the inside water meter is under the bathroom sink..cause i dont
know). How would turning on a facuet lower remove the air.
Wouldn't I need to go higher to remove air?
All you have to do is to drain the device which generally is above the
faucet. You can try just turning off the water and opening up all the
valves you can find and hope it clears. However note, not all homes will
have the device and this trick will not always work when it does, but it is
cheap and may work.
Sorry. I should have started a new thread, as my problem is somewhat
different from the OP's. Bathroom is on 2nd floor (American). The
sequence is: turn sink faucet on low-level -- water and no noise.
After it runs for a few seconds, the banging/shuddering begins. If I
increase the flow, the noise stops.
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