Why does the safety valve drip?

2024-09-11

Product knowledge

Why does the safety valve drip?

There are two reasons for pressure relief valve dripping: one is normal pressure relief, and the other is abnormal pressure relief.

Normal pressure relief: When the internal pressure of the electric water heater rises after heating (assuming it reaches 0.8) and exceeds the safe pressure that the water heater liner can withstand (assuming 0.7), the pressure relief valve will discharge the excess pressure through the pressure relief port through dripping. Part of the pressure to ensure that the inner tank of the water heater will not rupture due to excessive pressure (if the water heater begins to release pressure as soon as it is turned on, this may be because the heating rod of the water heater has accumulated scale and the heating rod has been heated, causing the internal pressure of the water heater to continue to rise.

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Abnormal pressure relief: When the water heater is not powered on or turned on, water drips from the safety valve outlet. This phenomenon may be due to the water pressure in the pipes at home being too high, exceeding the rated pressure of the safety valve. Replacing our safety valve may still cause the problem. Water will drip, which is normal and not a quality problem with the valve (you can observe the water pressure in the pipe by yourself). In this case, we recommend that you purchase a tap water pressure reducing valve to solve the dripping problem by reducing the water pressure.

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