What a T&P Valve Is and How to Fix It in Your Florida Home

There are safety features that manage pressurized tanks so that when overheating occurs, pressure release can happen rather than rupture the tank. For the water heater, the T& P valve (temperature & pressure) valve is designed only to activate if the water temperature or pressure in the tank is excessive (above 210° F or 150 PSI). This way, it protects the water heater and maintains it to keep producing hot water when needed.

When T& P inside the tank gets too high, the T&P valve will open and release water to relieve pressure, thereby avoiding explosion or damage.

Things You Should Know

• As T&P valves get old, they can begin to drip or leak and may need to be fixed. So, to manage T&P valves, frequently test the lever timely to see whether it snaps back into place or was correctly replaced.

Part 1: How to Test a T&P Relief Valve

The T&P relief valve should be tested at least once yearly to confirm it works suitably. It’s not uncommon for valves to wear out and must be fixed.

• Locate the T&P Valve. Locate the valve of your tank, typically at the top or side of the water heater.

• Remove the drain pipe. A drain pipe, at least 6 inches from the drain, is also attached to the valve. Pull it off the valve and put a bucket underneath.

• Discharge Water. Gently lift the valve’s lever to push a stream of water to drain from the tank for about a minute. You should hear water and air coming from the valve, and see water flowing into the bucket. Then close.

If the T&P relief valve continues to release water, even after re-seating the valve, then the valve is faulty and needs to be fixed or replaced.

Part 2: How to Fix a T&P Valve

Your water heater pressure relief valve is getting faulty when you notice it sticking (difficulty opening or closing it). Another sign is if you see a leakage – when it constantly drips (which lowers the water pressure).

1. To Fix a Sticky Valve. A sticky valve is stuck downwards or upwards (either closed or open position).

• If stuck downwards, the valve will not dutifully manage the pressure or heat in a closed water heater system. So, it will eventually crack up.
• If stuck upwards, water will not cease to leak. This is a flood in the making. You can only depend on quick fixes like opening and shutting the valve lever for so long. As long as it is sticky, it is a hazard that will need replacement.

1. To fix a Leaky T&P Valve. 

• First, verify that the water puddle around your water heater is, in fact, a leak and not just condensation.
• Turn the power off. Also, shut off the main cold-water valve feeding into the water heater.

• Find the source of the leak.

• If water leaks from the top of the water heater, examine the warm water outlet pipe and cold-water inlet attached at the top. If their fittings or connections are loose, use a pipe wrench and re-tighten the pipes.
• If water leaks from the sides, the T&P valve is faulty if your temperature is below 200° F.
• If water leaks from the bottom, your water heater may be cracked. This will trigger a replacement and not a repair.

Related Content: How to Turn Off the Gas to Your Water Heater