Recently, I replaced a kitchen faucet and added shut off valves leading to
Since then, we've had water hammering sounds when we turn off the faucets
in the house, not just when we use that new faucet. We used to have an
occassional water hammer sound when using the faucets before, but not as
frequent as now.
I've drained the water lines and made sure there is air in the pipes, but
that hasn't gotten rid of the water hammer sound. Not sure if that would
matter anyway becauses I can't find any short stretches of vertical capped
pipe in the house that is generally installed to provide an air cushion for
the water, to prevent water hammering sounds. (Our house is about 20 years
I've also reduced the water hammer sound by closing the main water valve a
bit to lower the incoming water pressure. Problem is, to reduce the water
hammering, I have to restrict the incoming water flow too much, and then we
don't have adequate water pressure in our faucets or shower.
I've heard that if a shut off valve -- like the new one I just installed
below the new faucet -- has a bad washer in it, that can cause water
hammering. But because this water hammering happens when we use other
faucets too, I didn't think the shut off valve below the new faucet could be
causing this water hammering. Is that right? Or can a shut off valve with a
bad washer cause water hammering sounds when multiple faucets are turnedoff?
Is there a way to test the new shut off valve? For instance, if I close the
valve completely, and the water hammer no longer occurs, then it would
likely be the shut off valve causing the problem right? Or would a shut-off
valve with a bad washer still cause water hammering even when it is
I know you can buy and install water hammer arrestors to get rid of water
hammering, but since this wasn't a major problem before I installed the new
faucet and shut off valves, I'm thinking that installing water hammer
arrestors would be overkill ... and a lot of unnecessary work.
Any advice would be appreciated!