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JoshInReno's avatar
JoshInReno
Explorer
Sep 21, 2017

Water Heater Pressure Relief Valve Outlet Size?

I have a stinky (mild rotten egg smell) water heater on my trailer that I need to deodorize with hydrogen peroxide. I am thinking of filling the water heater through the pressure relief valve. But I d...
Old-Biscuit's avatar
Old-Biscuit
Explorer III
Sep 22, 2017
wa8yxm wrote:
There are two sizes common 1/2 and 3/4. but on RV's only the 1/2 is used.


Not so....
Suburban uses a 3/4" NPT

Atwood used two sizes......1/2" NT & 3/4" NPT depending on year/model

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