Water Heater Pressure Relief Valve Discharge Pipe Code

The temperature pressure relief valve tprv is an incredibly important life safety device on every water heater.

Water heater pressure relief valve discharge pipe code. Not be directly connected to the drainage system. 504 6 requirements for water heater tpr valve discharge piping. Discharge to a termination point that is readily observable by occupants because discharge indicates that something is wrong and to prevent unobserved termination capping. If the pressure in the tank exceeds 150 psi or the temperature exceeds 210 degrees fahrenheit the tpr valve opens to release the pressure.

Figure 1 typical installation of a temperature pressure relief tpr valve on a gas water heater consequently code section 3303 3 i dictates that a tpr valve must discharge once the pressure inside the tank reaches 150 psi pounds per square inch. 608 5 discharge piping the discharge piping serving a temperature relief valve pressure relief valve or combination of both shall have no valves obstructions or means of isolation and be provided with the following. Not have valves anywhere. 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 flood rim level.

Not be directly connected to the drainage system. Discharge through an air gap located in the same room as the 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 more pressure than it can handle. Not be directly connected to the drainage system.

Be piped independently of other equipment drains water heater pans or relief valve discharge piping to the point of discharge. P2803 6 1 requirements for discharge pipe the discharge piping serving a pressure relief valve temperature relief valve or combination valve shall. Discharge through an air gap located in the same room as the water heater. 2014 fbc residential 5 th edition 28 water heaters p2803 relief valves p2803 6 installation of relief valves p2803 6 1 requirements for discharge pipe jump to full code chapter the discharge piping serving a pressure relief valve temperature relief valve or combination valve shall.

The discharge piping serving a pressure relief valve temperature relief valve or combination thereof shall. 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. Building codes require temperature pressure relief tpr valves with discharge pipes on all new water heater installations. Scalding water and steam escape the tank through the valve and tube to relieve the pressure.