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Starting Member


Friday, June 8th 2012, 5:06pm

Backflow valve

I have a question that hopefully someone can help me with. My backflow valve pops for a split second and releases a little water each time a zone opens and closes. The "pop" is very loud inside our house and at 5:30am its disturbing. I have tried taking the highest head off and flushing out the air. No luck! Any suggestions? Thanks in advance.


Supreme Member

Posts: 5,288

Location: Metro NYC


Saturday, June 9th 2012, 7:31am

If this is an RPZ that is spitting water, then it's reacting to water hammer, and it's the water hammer that's responsible for the noise.

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