It is widely used in chemical, petrochemical, petroleum, paper-making, mining, electric power, liquefied gas, food, pharmaceutical, water supply and drainage, municipal, machinery and equipment supporting, electronic industry, urban construction and other fields.

According to the functional requirements, select the types of valves, and then determine the material of the valve body and sealing parts according to the pipeline transmission medium, temperature, building standards and owner's requirements. Commonly used valve body materials are cast iron, copper, iron, copper, plastic and so on. Commonly used sealing and lining materials are copper alloy, plastic, steel, cemented carbide, rubber, etc. Valve body material should be matched with pipeline material.