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Old 11-18-2011, 11:43 AM   #1
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Temp Pressure Relief Valve plumbing question

I am going from a side mount water heater to top mount, so the Temp/Pressure Relief Valve drain hole is in the wrong spot. A normal T/P Relief Drain pipe won't work. I have to do a couple of elbows and so forth to get it in the right spot.

Can all of this be done with CPVC fittings?

For instance will a CPVC threaded fitting be good enough to attach to the T/P relief valve itself?

I ask because there's a short piece of steel pipe going to my current valve and the other side of the steel pipe attaches to a flexible T/P drain pipe.

Thanks for any help you can provide.


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Old 11-18-2011, 09:14 PM   #2
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CPVC is fine for your T&P. You have to use the same size piping as what the T&P valve is threaded for. You need to make sure the piping grades away from the valve.


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Old 11-18-2011, 09:17 PM   #3
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agree with alan you can not reduce the size of your piping comming off the tpr valve 3/4 inch all the way to discharge
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Old 11-19-2011, 05:38 PM   #4
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Thanks for the help!
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