Water Heater T P Valve Drain Line

Violating these codes may result in fines voiding your warranty or putting your family at risk.

Water heater t p valve drain line.

Here s my current plan. The valve is called a t p valve or tpr valve for temperature and pressure relief. If the water heater is within 6. 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.

On the side or top of your water heater tank is a valve connected to a metal or plastic discharge tube pointing downward. Temperature pressure relief valve discharge tubes drain lines their piping. 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. Most areas require a drain pan with a drain line under it.

If all goes well a tpr valve never gets used except during testing. This reduces the risk of water damage from leaks and aids during flushing. Follow local building codes when deciding where to drain any water that drains out of the tank. If you don t have a floor drain drain the water into a sump pit.

The purpose of this drain line is to discharge potentially hot scalding water to a safe location so that a bystander is not scalded. T p valve the. The valve should be connected to a discharge pipe also called a drain line that runs down the length of the water heater tank. Understanding water heater installation code requirements can be a real pain.

Next to water heater is a 1 1 2 pvc pipe that starts 2 above floor grade goes down into floor takes a 90 degree turn and ends about 8 past the exterior wall and maybe 4 off the ground above a planting bed. 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. 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.