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I just finished building a new walk in shower. Installed new

Customer Question
high priced shower valve. When...
I just finished building a new walk in shower. Installed new high priced shower valve. When I turn on the faucet with only cold water, all works well, but as I add hot water the hammering starts. Only when water turned on. Sounds like a jackhammer. No pressure tank on water heater. Never did this before remodel. Drained system completely several times no change. Adjusted set screws on valle which reduced hammering but also reduced waterflow and quantity of hot water to shower head. Do I need an in-line arrester, expansion tank or just what?
Submitted: 2 years ago.Category: Plumbing
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Answered in 8 hours by:
6/20/2015
Plumber: Brian, Plumber replied 2 years ago
Brian
Brian, Plumber
Category: Plumbing
Satisfied Customers: 854
Experience: 16 yrs. experience as plumber, including full bathroom and kitchen installations.
Verified
Hi yes an arrester will do the job but I think you need to check the specification on the shower against your water pressure. if your water pressure is inline with specifications then make a claim under the warranty. it should not be doing this and you may have a faulty valve
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Customer reply replied 2 years ago
Should I also install a pressure tank on the water heater? Will that help with the noise also?
Plumber: Brian, Plumber replied 2 years ago
Hi I can't see any reason to install an expansion vessel. You are not having fluctuations in pressure other than the ones caused by the faulty shower
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Brian
Brian
Brian, Plumber
Category: Plumbing
Satisfied Customers: 854
854 Satisfied Customers
Experience: 16 yrs. experience as plumber, including full bathroom and kitchen installations.

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