Two stainless steel threaded plug valves opening and closing parts is a hole in the cylinder, the cylinder and the stem around the rotation axis perpendicular to the channel, so as to achieve the purpose of opening and closing the channel. Plug valves are mainly used for opening and closing pipes and equipment media. Plug main advantages are as follows: suitable for regular operation, open and close quickly, lightweight. Fluid resistance is small. The utility model has the advantages of simple structure, small relative volume, light weight and convenient maintenance. Sealing performance, not limited by the direction of installation, the flow of media can be arbitrary. No vibration, low noise. Plug valve installation and maintenance should pay attention to the following: to leave the valve handle rotation position can not be used as throttling. Ball valve with transmission mechanism should be installed vertically.
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