Water Heater T P Valve Installation

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.

Water heater t p valve installation.

Install this temperature and pressure relief valve t p valve directly in the top or side t p opening that is indicated on the tank. 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. The purpose of the relief valve also called tpr valve temperature pressure relief is specifically to prevent over pressure from bursting or exploding the water heater tank.

It must be installed within the hot outlet service line in the hot water flow or directly in a tank tapping. Place a bucket below the discharge tube. If the water heater is heating the water too much the excessive pressure may be causing the t p valve o leak. Skip to content.

2 drain the water from the tank until the water level is below the valve s location. The solution might be to lower the water temperature or to install a water expansion tank if you don t already have one in your plumbing system. Asme ansi and csa aga approved relief valves protect the water heater from excess pressures and temperatures by discharging water. The temperature pressure relief valve or tpr valve on any heated appliance that contains water such as a heating boiler hot water tank water heater water cylinder must have a drain line or discharge tube properly installed routed and made of proper materials.

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. Make sure that the discharge tube is firmly attached. 1 shut off the cold water to the water heater and gas or electricity that heats the water heater. The valve must be installed so that the temperature sensing element is immersed in the water within the top 6 152mm of the tank.

Installation instructions important general information. Violating these codes may result in fines voiding your warranty or putting your family at risk. The last line of defense for pressurized equipment temperature and pressure t p relief valves protect equipment from excess pressure and ultimately catastrophic failure. Briefly pull back on the t p valve s metal lever to cause a small amount of water about.

T p valve the temperature and pressure relief valve is an important safety device which goes off when your tank exceeds 210 degrees fahrenheit or. When a water heater is overheating the increase in pressure or temperature or both cause spillage of water at the temperature and pressure relief valve. Wear closed toe shoes to avoid scalding.