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Two relief valves on hot water heater?

440 Views 6 Replies 4 Participants Last post by  dkerlee
Seems like I have two relief valves on my hot water heater. One top center, and another on the hot water side. Is the second, hot water side necessary?

Going to be replacing with PEX soon, and need to get parts correct.

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The one on the pipe near ceiling is not necessary,
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