I have been searching through this forum in hopes of finding and answer, but do not seem to be able to find something similar.
I recently had a new shower installed using the Moen Posi-temp valve. 10-15 minutes after I turn off the shower, there is a single knock/bang noise that comes from the shower. I have trouble shot the problem like you would for water hammer, but that has not yielded any luck. What baffles me (and the plumber who did the install) is the bang noise is delayed by 10-15 minutes. I do not experience this issue with any other faucet in the house, so it makes me wonder if it is related to the valve (I didn't have this issue prior to the remodel, but it was a different valve). Could it be a faulty valve cartridge?
Appreciate any and all suggestions.
I recently had a new shower installed using the Moen Posi-temp valve. 10-15 minutes after I turn off the shower, there is a single knock/bang noise that comes from the shower. I have trouble shot the problem like you would for water hammer, but that has not yielded any luck. What baffles me (and the plumber who did the install) is the bang noise is delayed by 10-15 minutes. I do not experience this issue with any other faucet in the house, so it makes me wonder if it is related to the valve (I didn't have this issue prior to the remodel, but it was a different valve). Could it be a faulty valve cartridge?
Appreciate any and all suggestions.