enter image description here What size Fitting do I need to attach to the T&P valve for my PVC pipe

  • Are you trying to use regular DWV PVC, or CPVC? – ThreePhaseEel Mar 9 '19 at 15:11

Three quarters inch is the size


Yes 3/4" pipe will thread onto the t&p valve and it should extend to within 6" of the floor. It should terminate in a conspicuous location so any pressure or temperature dumps will be noticeable. Hardware stores sell tubes made of plastic with a threaded end specially for this purpose.

This is a drip tube enter image description herewww.amazon.ca

Not sure what the official name is but it's colloquially known as a drip tube.

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