Furnace Pressure Relief Valve Dripping

How to fix a leaking boiler pressure relief valve step 1.

Furnace pressure relief valve dripping.

Many hydronic boilers are shipped with a 30 psig relief valve from the factory. The relief valve is defective. Another troubleshooting task i perform is watching the tridicator or pta gauge while the boiler is firing and heating the water. Here are possible causes and solutions to fix such a problem.

A typical cause is the cold pressure of the boiler water system is higher than the setpoint of the expansion tank which are typically designed with a 12psi setpoint. Leaking of the pressure relief valve due to this condition is normally cyclical as the boiler temperature heats and cools. Your water heater s relief valve can start leaking for one of two reasons. So if you see water actually spilling or even if it s just dripping at the temperature pressure relief valve on your heating boiler or water heater the cause needs to be found and fixed promptly and it may be appropriate to install a new t p valve also called tpr valve after those repairs are complete.

Shut down the power to the boiler. This safety valve should be checked at least every three months. Either the valve was triggered to open because of excessive temperature or pressure or the valve itself is faulty. Drain water from the boiler in order to reduce the pressure.

In the first case the valve will drain water out of the discharge pipe as explained above. When you notice a leak coming from your boiler pressure relief valve attend to it immediately. There are a lot of different things that may have caused your water pressure relief valve to begin to leak. Both circumstances should be taken very seriously.

Open the drain valve on the boiler to drain the. The relief valve is working the way it s intended and water drained to reduce the pressure inside the tank. In this example the relief valve should be at 40 psig or higher. There s a problem with the valve such as a faulty seal and the water is unintentionally leaking.

It may also begin to leak after time or if it was not installed properly. There are two potential causes for this circumstance. In most cases this will involve switching off the breaker specifically. If a pressure relief valve for a boiler is accidentally installed on a water heater it will leak like crazy from the start.

You may find that your water pressure relief valve may begin to leak after it has been flushed. Eventually everything will give in to wear and tear.