Step 6 · Re-connect Discharge Pipe
With the new valve in place, you must re-install the discharge pipe. If desired, clean the threads on the pipe and apply fresh Teflon tape. Screw the discharge pipe into the outlet of the new T&P valve. Tighten it using your pipe wrench or adjustable wrench until it is secure. Per universal plumbing code, the pipe must extend down to within 6 inches of the floor and its end must not be capped, threaded, or otherwise obstructed to ensure a safe path for water discharge.