Metallurgical Chemicals,Metallurgical Processing Chemical,Calcium Cyanamide Granule,Mining Metallurgical Chemical Ningxia Darong Chemicals & Metallurgy Co., Ltd. , https://www.darong-cyanamide.com
Common faults and causes of safety valves [Safety valve leakage] (1) The contact surface between the valve core and the valve seat is not tight; (2) The contact surface between the valve core and the valve seat is dirty; (3) The valve stem is deflected.
[The safety valve does not open when the pressure is specified] (1) The valve core is stuck to the valve seat and can be removed by manual exhaust test; (2) The spring adjustment pressure of the spring-type safety valve is too large and should be readjusted; (3) When the weight of the lever type safety valve moves backwards, the weight should be moved to the original constant pressure position and fastened with the limit screw.
[The safety valve is opened when the pressure is not specified] (1) The spring-type safety valve has insufficient spring adjustment pressure, spring failure or insufficient spring force, and the safety valve should be re-adjusted or re-switched; (2) The lever-type safety valve hammer moves forward. The weight should be moved to the original constant pressure position and fastened with the limit screw.
Safety valve overview
The safety valve is an automatic pressure relief device that is opened by the imported static pressure. It is one of the important safety accessories for the pressure vessel. Its function is: when the pressure inside the container exceeds a certain value, it depends on the pressure of the medium itself. The valve is automatically opened to quickly discharge a certain amount of media. When the pressure in the container drops to the allowable value, the valve is automatically closed, so that the pressure inside the container is always lower than the upper limit of the allowable pressure, and the accident that may occur due to overpressure is automatically prevented, so the safety valve is also called the pressure vessel. Final protection device.
Next Article
Soybean fertilization technology
Prev Article
Pheasant finishing management skills