The term back pressure valve is derived from Back Pressure Valve, which stands for a certain pressure due to the function of the valve, and the pressure can generally be adjusted. It can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil, liquid metal and radioactive media. The opening and closing member is a disc-shaped valve plate, which rotates around its own axis in the valve body to open and close or regulate the purpose. In the pipeline, it mainly plays the role of cutting off and throttling. The most commonly used systems are, fluid metering and dosing systems, hydraulic control systems, chemical reaction conditions, material critical state control, etc.. Basically, it can be divided into two parts: regulation and overflow.
English 
Arabic