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T&P valvedripping

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T&P valvewater heater

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.

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.

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T&P valvemeaning

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.

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.

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).