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Posts Made By:
Martind4
Forum:
iRV2.com General Discussion
06-17-2011, 08:43 PM
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Hot water heater making a humming noise
Views:
9,907
Posted By
Martind4
The check valve is usually found on the backside...
The check valve is usually found on the backside of the WH on the Hot outlet. It's purpose is to prevent backflow into the WH when winterizing with antifreeze.
If you replace it, get a brass...
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