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It’s a full blown backflow preventer that gets tested yearly. I can’t remove that!

I think they have the water to the building coming in a main on the 1st floor – then it branches off to different areas of the building. The cold line that serves my 2nd floor comes in via a backflow preventer. If I shut the valve at this point, my whole cold water on the 2nd floor goes down.

Water Heater Rescue

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