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What type of hammer arrestor do I buy to fix banging pipes after installing a new Moen posi-temp cartridge?

After installing a new Moen Posi-Temp pressure balanced shower cartridge, the pipes started banging every time the water was turned on. I read on Fixya that you could install a hammer arrestor to fix the problem. There are quite a few models of hammer arrestors and I do not know which one to buy.

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Banging pipes are a result of improper piping support. If the piping is secured, the banging will stop. If your only option is to install chambers for water hammer, any will do. Their only purpose is to hold air.

Posted on Apr 26, 2014

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Posted on Jan 02, 2017

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frank00802
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SOURCE: Had a leaky Moen Posi-Temp shower faucet.

Yesterday, I also repaired a leaking bath/shower cartridge in a Moen Posi-temp faucet (mod. 1222). I couldn't locate a Moen cartridge so I bought one in Home Depot made by Danco (#88675A). My priority was to correct the water leak. Today I noted that when the commode fill valve shuts off, a noise (clicking) comes from the tub that I suspected as water hammering. I tried flushing the water lines to correct for air hammer several times without success.
So that brings me to this site and I see that someone else has experienced the same problem. To correct the noise, I'll need to get a Moen cartridge. Until then, my question is: IS THERE ANY HARM DONE by leaving the Danco cartridge in place?
I can get accustomed to the metalic/hammering noise whenever the toilet is flushed and the tub faucet is shut off.

Posted on Nov 22, 2013

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Contact Moen and describe your problem.

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