Water Heater T P Valve

Another factor in determining the pressure rating of the t p relief valve is the code itself.

Water heater t p valve.

1 shut off the cold water to the water heater and gas or electricity that heats the water heater. It s a good idea to test yours annually and replace every so often. Tprs are designed to automatically release water in the event that pressure or temperature in the water tank exceeds safe levels. This device is an absolutely critical safety item so you want the best.

Rheem protech 4 1 4 in. Model codes require the t p relief valve be set no higher than 150 psi. On the side or top of your water heater tank is a valve connected to a metal or plastic discharge tube pointing downward. The last line of defense for pressurized equipment temperature and pressure t p relief valves protect equipment from excess pressure and ultimately catastrophic failure.

The valve is called a t p valve or tpr valve for temperature and pressure relief. 2 drain the water from the tank until the water level is below the valve s location. Shank temperature and pressure relief valve for electric and gas water heaters model sp8346 16 24 16 24. Temperature pressure relief or tpr valves are safety devices installed on water heating appliances such as boilers and domestic water supply heaters.

Asme ansi and csa aga approved relief valves protect the water heater from excess pressures and temperatures by discharging water. Free delivery with 45 order. The t and p valve which is located on the. But if the termination of the piping is not readily visible such as if it is located under the house the water will continue to drain until the homeowner gets an amazing electric or gas bill and goes searching for the reason.

If the water heater thermostat fails to turn off at its temperature setting and continues to heat the water indefinitely the tpr valve will open and let the overheated water out. If all goes well a tpr valve never gets used except during testing. Here s how to replace a water heater temperature pressure relief valve. Close the shutoff valve on the cold water inlet line that fills the water heater.

Every water heater whether gas or electric needs a temperature and pressure relief valve because without one it could begin to leak or even explode. Therefore a water heater with a mawp of 160 psi still requires a t p relief valve set at 150 psi even though the vessel is designed and built to withstand a higher pressure. Set your store to see local availability add to cart. Cash acme 3 4 in.

Watt s has a good reputation for reliability and quality. T p valves used on residential water heaters are typically designed and manufactured to relieve pressure at 150 psi and temperature at 210 degrees f.