Gate valve is a kind of valve widely used in petroleum, chemical, electric power, metallurgy, water supply and drainage and municipal engineering and other working conditions. It is suitable for water, steam, oil, gas and a variety of corrosive media, with good pressure resistance and sealing performance. Gate valve through the gate up and down to realize the fluid cut off and connection, simple structure, small flow resistance, opening and closing flexible, suitable for fully open or fully closed state use. Product advantages include superior sealing performance, wear and corrosion resistance, long service life, easy maintenance, and support manual, electric and pneumatic drive to meet the needs of automation control. Gate valves are mainly used for opening and closing control of media in pipeline systems to ensure the safe and stable operation of the system. Its rugged and efficient performance makes it an important valve equipment indispensable for industrial and civil pipelines.