Common Faults and Troubleshooting of Spring Safety

The spring safety valve is a device set for the exhaust pipe to be blocked due to misoperation or uncleanness. The spring safety valve is actually a device that limits the exhaust of the pressure cooker within the safe pressure range to ensure safe use. Spring The structure and performance of the valve is the key. According to the ratio of the maximum opening height of the valve disc to the flow diameter of the safety valve, the spring safety valve can be divided into two types: the spring slightly open high pressure safety valve and the spring fully open safety valve. What faults will happen to the spring safety valve and what are the troubleshooting methods? Now Guoyang Spring will take you to understand.

1、 Type of safety valve

(1) Spring slightly open and close high-pressure safety valve: the opening height of the micro lift safety valve is less than 14 of the flow passage diameter, usually 140-120 of the flow passage diameter. The action process of the micro lift safety valve is proportional action type, which is mainly used for liquid occasions, and sometimes for occasions with small gas emissions.

(2) Spring fully open safety valve: the opening height of the fully open safety valve is greater than or equal to 14 of the flow path diameter. The discharge area of the fully open safety valve is the minimum sectional area of the valve seat throat. Its action process is two-stage, and can only be fully opened with the help of the lifting mechanism. The full lift safety valve is mainly used in gas medium occasions.

(3) Medium lift safety valve: the opening height is between micro lift and full lift. In other words, it can be divided into two levels of action or proportional action.