Main features of valve is its own compact, reliable seal, simple structure, easy maintenance, regular spherical surface and seal in the closed state, the media can not easily be eroded, easy operation and maintenance for water, solvents, acids, and natural gas general working medium, but also for poor working conditions of media, such as oxygen, hydrogen peroxide, methane and ethylene, in the various sectors has been widely used. Ball valve can be integral, it can be modular.

1, oil, natural gas transmission mains, need to clean the pipeline, but also to be buried in the ground, use full bore, ball valve full welded structure; laid in the ground, select the full bore welded connection or flange connection valve; branch, the choice of flanged, welded connections, full bore or reduced bore ball valves.
2, the refined oil pipelines and storage equipment, the choice of flanged ball valves.
3, town gas and natural gas pipeline, use the threaded flange and the floating ball.
4, metallurgical oxygen system piping systems, degreasing treatment should be selected through strict, fixed flange ball valve.
5, low temperature piping systems and media devices, should use low-temperature valve with the gate valve cover.
6, oil refining device of the catalytic cracking unit of the pipeline system, the choice of lift rod ball.
7, the chemical system, pH and other corrosive media devices and piping systems, should use of austenitic stainless steel, and Teflon stainless steel ball valve seat ring.
8, metallurgy, power systems, petrochemical plants, urban heating system piping hot medium or device, the choice of metal to metal sealing ball valve.
9, the need for flow control may make use of worm gear, pneumatic or electric with a V-shaped openings of the regulator valve.

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