Step 4 · Remove the Discharge Pipe
The T&P valve has a discharge pipe, typically made of copper or CPVC, attached to its outlet. This pipe directs any discharged water safely towards the floor. Before you can remove the valve itself, you must first detach this pipe. It is usually connected with a threaded fitting. Place your bucket underneath to catch any trapped water. Using your pipe wrench or channel-lock pliers, grip the fitting on the pipe and turn it counter-clockwise to unscrew it from the T&P valve. Once it's loose, set the pipe aside.