Water Heater Pressure Relief Valve Discharge Pipe Code

8 termination of the tpr drain pipe cannot be more than 6 inches or less than two pipe diameters above the floor ground or waster receptor.

Water heater pressure relief valve discharge pipe code.

7 discharge from a relief valve into a water heater pan shall be prohibited. Its proper functioning is the difference between a nice hot shower and an explosion. Discharge through an air gap located in the same room as the water heater. The discharge piping serving a pressure relief valve temperature relief valve or combination valve shall.

Serve a single relief device and shall not. Not be smaller than the diameter of the outlet of the valve served and shall discharge full size to the air gap. The indirect or local waste piping serving a water heater temperature and pressure relief valve or water treatment device may discharge through the cover of a clear water sump so as not to adversely affect floats by means of a fixed air gap installed in accordance with subs. Not be directly connected to the drainage system.

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. Every relief valve which is designed to discharge water or steam shall be connected to a discharge pipe. 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.

5 a the discharge pipe and fittings. The temperature pressure relief valve tprv is an incredibly important life safety device on every water heater. Unlike the expansion tank which is intended to protect the piping system from pressure the tprv protects the water heater tank from experiencing.