Water heaters provide us with hot running water that we use to cook, clean and bathe. Like all appliances, however, water heaters can have malfunctions that cause problems for your home.
The most common problem homeowners encounter with their water heating systems is a malfunctioning pressure relief valve. We will talk about what a pressure release valve is, what it does, and how to fix it when it stops working.
What is the Pressure Relief Valve (PRV)?
A pressure relief device is an essential component of any water heater. It prevents dangerous pressure from building up in the tank. The water expands when heated and if it exceeds the safe pressure limit in the tank, the tank may rupture or even explode. This can lead to serious damage or injury. The pressure relief valve releases the excess pressure to prevent dangerous situations.
Why is a pressure relief device important?
Faulty pressure relief valves can cause various problems, including leaks and tank failure. If a pressure release valve does not work correctly, the pressure can build up in the water heater, causing leaks or, in extreme situations, a tank failure. This can cause flooding, extensive water damages, and even fire hazards.
What Should You Do If a Pressure Release Valve Is Faulty
Before calling an expert, you can check if your pressure relief is working properly. Here are a few steps you can take:
- Check the Temperature & Pressure Gauge. Start by checking the gauges for temperature and pressure on your water heater. The pressure shouldn’t exceed 150 psi and the temperature between 120 and 141 degrees Fahrenheit. It could be that the valve fails because the pressure is high or the temperature too hot.
- Release Pressure: Switch off the electricity to the heater and let it cool. Then, find the relief valve. Carefully pull the lever in order to release some pressure. The valve should make a hissing or chirping sound.
- Test the Valve. In the event that releasing the water pressure does not solve the problem, it may be necessary to test the valve. Turn off the water heater power and close the shutoff of the valve. Then, attach a hose and open the drain on the valve. If water still flows after closing the valve, this is an indication that the valve needs to be repaired.
- Call a Professional Plumber: If the problem is not fixable or you don’t know how to proceed it is best to contact a plumber. A plumber with a license can assess the problem and determine if it is necessary to repair or replace the valve.
Conclusion
A malfunctioning pressure relief valve in a water heater is a major problem that can lead both to expensive repairs and potentially dangerous situations. Regularly checking your water heater’s pressure relief is essential to ensure its proper functioning. You can either call a licensed plumbing professional for help or follow the steps above if you suspect that there’s a problem. Take proactive steps to maintain the water heater and you will avoid major problems.