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Old 11-19-2017, 10:44 AM   #1
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flushometer and water hammer


i replaced my gem flushometer with a gem 2 (piston). i set the stop as low as i can so it still flushes and i still get some water hammer. if i switch to a diaphram type would that lessen the water hammer? my thought is the diaphram probably closes slower than the piston. an i correct?
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Old 11-19-2017, 06:38 PM   #2
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Re: flushometer and water hammer


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Originally Posted by i07nyc View Post
i replaced my gem flushometer with a gem 2 (piston). i set the stop as low as i can so it still flushes and i still get some water hammer. if i switch to a diaphram type would that lessen the water hammer? my thought is the diaphram probably closes slower than the piston. an i correct?
Yes, Imo, I agree with ur thought process. Switching it out may help.

What you can try first is just backing off the supply feeding toilet a little, see if that helps.

This helped my problem with a water hammer on my new washing machine. The new machine had those quick piston like shutoffs as well. Old machine was fine, but newer one had quick piston shutoffs which caused a really bad hammering. Just a suggestion.
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Old 11-20-2017, 06:02 AM   #3
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I have my supply turned as low as it will go and still flush. The pipes are not earth shatteringly banging. Just a little bump.
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