Function and classification of sanitary safety valve

             Sanitary safety valve plays the role of safety protection in the system.When thepressure of the system exceeds the specified value, the sanitary safety valve will be opened and a part of the gas/fluid in the system will be discharged out of the atmosphere/pipeline, so that the pressure of the system will not exceed the allowable value, thus ensuring that the system will not cause an accident due to excessive pressure.

            There are two main types of relief valve structures: spring and lever.Spring type refers to the sealing force between disc and seat by spring.The lever type relies on the force of the lever and the hammer.With the need for large capacity, there is a pulse type safety valve, also known as the pilot type safety valve, by the main safety valve and auxiliary valves.When the medium pressure in the pipeline exceeds the specified pressure value, the auxiliary valve is opened first, the medium enters the main safety valve along the catheter, and the main safety valve is opened to reduce the increased medium pressure.

The discharge amount of the relief valve is determined by the caliber of the seat and the opening height of the disc. It can also be divided into two types: micro-open opening height is the inner diameter of the seat (1/15) ~ (1/20), and full-open opening height is (1/3) ~ (1/4).

In addition, with the use of different requirements, there are closed and not closed.Closed that is, the discharge of the media is not leakage, all along the specified outlet discharge, generally used for toxic and corrosive media.Non - enclosed generally used for non - toxic or non - corrosive media