Water Heater Pressure Relief Valve Discharge Pipe Code

Not be directly connected to the drainage system.

Water heater pressure relief valve discharge pipe code.

A trapped tpr dischage pipe is a common defect when a replacement water heater s tpr valve is lower than the original one and the installer connects to the exisitng discharge piping at the wall. 7 discharge from a relief valve into a water heater pan shall be prohibited. Unlike the expansion tank which is intended to protect the piping system from pressure the tprv protects the water heater tank from experiencing. Every relief valve which is designed to discharge water or steam shall be connected to a discharge pipe.

Temperature and pressure relief valves shall be installed so that the sensing element of the valve extends into the heater tank and monitors the temperature in the top 6 inches of the heater or tank. If the tpr valve is on top of the water heater install a short piece of cpvc from the valve to the side of the water heater then use a 90 degree fitting to make the turn towards the floor and add a second pipe to carry the discharge down to the catch pan. 6 the terminal end of the pipe shall not be threaded. 4 discharge in such a manner that does not cause personal injury or structural damage.

The discharge piping serving a pressure relief valve temperature relief valve or combination valve shall. The temperature pressure relief valve tprv is an incredibly important life safety device on every water heater. Discharge through an air gap located in the same room as the water heater. Serve a single relief device and shall not.

5 a the discharge pipe and fittings. 5 no part of such discharge pipe shall be trapped or subject to freezing. Its proper functioning is the difference between a nice hot shower and an explosion.