The types of safety valves are as follows:

1. Heavy hammer lever safety valve

Heavy hammer lever safety valve uses a heavy hammer and a lever to balance the force acting on the disc. According to the lever principle, it can use a small weight hammer to obtain a larger force through the increase of the lever, and adjust the opening pressure of the safety valve by moving the position of the weight hammer (or changing the weight of the weight hammer).

2. Spring micro-opening safety valve

Spring micro-opening safety valve uses the force of compression spring to balance the force acting on the disc. The compression of the spiral coil spring can be adjusted by turning the adjusting nut on it. With this structure, the opening (setting) pressure of the safety valve can be corrected as needed.

3. Pulse safety valve

The pulse safety valve is composed of a main valve and an auxiliary valve. The main valve is driven by the pulse action of the auxiliary valve, and its structure is complex. It is usually only suitable for boilers and pressure vessels with large safety discharge.

Extended information:

Precautions for safety valves:

1. Always keep the safety valve clean to prevent the valve body spring from being full or corroded by oil dirt and dirt, and to prevent the discharge pipe of the gas safety valve from being blocked by oil dirt or other foreign bodies; Always check whether the lead seal is in good condition, to prevent the weight of lever safety valve from loosening or being moved, and to prevent the adjusting screw of spring safety valve from being twisted at will.

second, after cleaning the safety valve, it must be debugged again.

3. Clean the safety valve with light oil.

fourth, after debugging, the operation of the safety valve should be carefully observed in the initial operation stage.

5. When the safety valve shows signs of leakage, it should be replaced or overhauled in time. It is forbidden to eliminate the leakage by increasing the load (such as excessively tightening the adjusting screw of the spring safety valve or hanging heavy objects on the lever of the lever safety valve, etc.).

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