Using formed polytetrafluoroethylene packing, suitable for most high and medium pressure gas transmission applications, the handle has a stable operating torque, and the O-ring seal is used to prevent external impurities from entering the valve interior. And maintain the long-term sealing performance of the valve, ball valves larger than DN150 are driven by worm gears.

Main design parameters

Design and Manufacturing: GB/T12237-89

Flange connection: JB/T79-94、GB9113-2000

Structural length: GB12221-89

Nominal diameter: DN15~DN150mm 

Nominal pressure: PN1.6、2.5、4.0MP。