Why is the boiler boiler pressure relief valve leaking?

March 20, 2018 | By 246@dmin | Filed in: Uncategorized.

In a recent test, water from the extension pipe on the side of the boiler dripped to the floor. This tube is connected to a leaking pressure dampener or safety valve. This relatively common problem is a relatively good thing and will protect you and your family from any failure of the boiler. Before installing these devices, it was not unusual to hear boiler explosions that would hurt the place of residence.

But why are you leaking right now? It is important to understand the operation of the heating system to answer the question. The heating system is distributed in warm water with warm water. As water warms up and cools the boiler, the water increases and the pressure increases. In order to limit the pressure of the heating system, the DHW heating system contains various safety devices to keep your home safe.

The first and most important tool for the boiler is a pressure reducer or a safety valve. The operating pressure of the domestic boiler system is 12 psi. If for any reason the boiler pressure is increased at safe operating pressure (the default pressure control valve), the valve opens. This overpressure condition is probably caused by a defective expansion vessel. If the boiler system does not allow adequate water expansion in the system, the pressure of the system will increase above the pressure relief valve setpoint. The leakage of the pressure relief valve due to this condition is generally cyclical as the boiler temperature is warmed up and cooled. This circumstance has two possible causes:

The typical reason is that the boiler water system's cold pressure exceeds the setpoint of the expansion vessel, typically produced by a 12-psi reference. However, if the feed valve in the boiler system is higher than this set value, the expander tank hose compresses before the boiler starts. After the boiler is switched on and the water is warmed up, subsequent thermal expansion can not be inserted into the compressed bladder. It may be necessary to modify the internal pressure of the expansion vessel and / or to lower the setpoint of the pressure reducing valve

Secondary potential cause is the actual leakage or failure of the expansion tank. In this scenario, the expansion vessel no longer provides thermal expansion of the system because the entire tank is filled with water.

Other Causes of Leakage The pressure relief valve is due to damage to the valve and the valve. In this case it is recommended to replace the valve. Work should always be done by a qualified plumber contractor.

Source by Sbobet


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