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Vacuum Relief Valve for Water Heater


Neal Lewis

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I was in a condo where the gas water heater was installed at the upper level. With no water running, I was randomly hearing large bubbles of air in the piping and/or heater. There is a newer vacuum relief valve installed on the cold water side supply piping.

Is this normal to have some air entering the valve, even without any water running at any fixtures?

Thanks

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