Water Heater Leaking From Relief Valve Pipe

A leaking relief valve at the water heater.

Water heater leaking from relief valve pipe. The relief valve is working the way it s intended and water drained to reduce the pressure inside the tank. This temperature pressure relief valve is attached to the discharge pipe. If the tank is leaking there must be internal leak of hot water heater. When you see water coming out from the water heater release valve there are two most likely causes.

If you have a large leak or the drip doesn t stop on its own in a day or two the valve will need to be replaced. Pressure relief valves sometime develop a drip when opened for the first time in years. At the bottom of the tank there must drain valve in every cold hot water heater leaking from top. Your water heater s relief valve can start leaking for one of two reasons.

Why it s leaking and what to do about it water heaters come equipped with a temperature and pressure relief valve also known as a tprv. It s designed to release the pressure when there is too much of a load built up inside the water heater. This drain valve can be capped with a hose cap or you can replace the drain valve completely with a new valve. Try opening and closing it a few times to see if it will seat itself.

In the first case the valve will drain water out of the discharge pipe as explained above. There are numerous possible reasons your water heater s pressure relief valve leaks. After draining or flushing a water heater it is common for the drain valve to fail to close completely. Is your hot water heater leaking from overflow pipe internal leakages.

Why might your water heater s relief valve start leaking. Either the valve was triggered to open because of excessive temperature or pressure or the valve itself is faulty. If the internal pressure in your hot water heater reaches or exceeds 150 pounds per square inch or if the temperature of the water exceeds 210 degrees fahrenheit the temperature and pressure relief valve will open. A leak in the drain valve at the bottom of the water heater is another common issue.

When it opens hot water comes rushing out of the water heater and through the temperature and pressure relief valve drain pipe. So this release of its pressure causes your hot water tank overflow pipe dripping towards the floor where the hot water heater is placed.