This valve is the reliable equipment to cut off gas medium in accord with GB6222 Industry Coal gas Safety Regulation. It is widely used in the pipe system in building material, glass, mining, power, light industry and papermaking departments. It is especially suitable for poison inflammable gas to be cut off or be the terminal blind plate of pipe in order to shorten maintenance time or connect new pipe system.
The valve has the features of compact structure, endurance, reliable seal, flexible operation, easy to maintenance and long life. It can switch valve disc with pipe expansion, which will not affect pipe device. It is suitable in the condition of adjusting, cutting off and self-protecting quickly. The valve is used with rotating connecting axle screw or worm gear driving to form a complete set to realize open-close operation. It is the ideal equipment of switching seal.