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Gate valve is a kind of valve for medium connection and shut- off but not suitable for regulating. Compared with other valves, gate valves have a wider range of combined applications for pressure, service fluid, design pressure and temperature.
According to the valve internal construction, it can be divided into wedge gate valve, through conduit valve, double expanding gate valves; It also can be divided into solid, flexible, split, parallel slide wedge gate valve according to their disc type.