Water Heater Pressure Relief Valve Drain Line

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.

Water heater pressure relief valve drain line.

Before you drain a water heater check its pressure relief valve the means by which the tank. This reduces the risk of water damage from leaks and aids during flushing. Heating element pressure relief valve rheem water heater accessories gas valve water heater accessories treater smokers hotwire. Operates when the pressure inside the tank reaches the rated pressure of the tank.

For more on this. The pipe leaving the relief valve should be the same diameter as the exhaust port of the valve usually 3 4 inch. Supply line softener 4 supply line wh 13 temperature and pressures valve 20. Understanding water heater installation code requirements can be a real pain.

Here are other things to pay attention to. 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. Every hot water heater mush have a pressure relief valve and a temperature relief valve. 4 termination of the discharge piping can be to any of the following.

Most areas require a drain pan with a drain line under it. Violating these codes may result in fines voiding your warranty or putting your family at risk. If the valve is doing its job and hot water is dripping or spewing out of the tpr drain valve turn down the temperature on the water heater controller and or turn down the water pressure. The valve should be connected to a discharge pipe also called a drain line that runs down the length of the water heater tank.

In the future follow these steps to drain a water heater. Pan serving the water heater. A good solution to this risk is the relief valve. In the example below an upper pressure relief valve drain not visible behind vent connector has been tied into the drain for the lower one.

The two can be combined in one device so long as it meets the requirements for both individual valves. Get free shipping on qualified drain tube water heater accessories or buy online pick up in store today in the plumbing department. If the water inside the unit gets too hot usually above 210 degrees or pressure builds up too high above 150 psi the water heater can become damaged or even explore. Go to our blog post when is a water heater drain pan required.

If at any point the temperature or pressure reaches an. The tpr valve will activate if either water temperature measured in degrees fahrenheit or pressure measured in pounds per square inch psi exceed safe levels.