Ball valve for occasions

Because of the fixed ball valve usually rubber, nylon and Teflon as the seat ring material, so the soft sealing ball valve floating its temperature by the valve seat ring material constraints. As the role of valve by the metal sphere in the role of media, and pressed between plastic seat to complete the ( floating ball valve ). Valve seat ring in a certain contact pressure, elastic-plastic deformation occurred in some areas. Can compensate for this deformed sphere of manufacturing accuracy and surface roughness to ensure the valve sealing performance.

Because the fluorine lining valve seat ring is usually made of plastic, so the choice of valve structure and performance, to consider the ball of fire and fire, especially in the petroleum, chemical, metallurgical and other departments, the use of flammable, explosive medium ball in the equipment and pipe system, should pay attention to fire and fire prevention.

Usually, V type regulating valve in the two-position adjustment, strict sealing, slurry, wear, necking channel, the rapid opening and closing movement ( 1/4 turn open and close ), high pressure cut-off ( pressure difference ), low noise, there is the phenomenon of cavitation and gasification, small amount of leakage to the atmosphere, the pipeline system operation torque is small, the fluid resistance small, recommended the use of electric ball valve.

Ball also applies to the light structure, low-voltage cut-off ( pressure difference ), corrosive medium in pipeline system.

In the low-temperature (cryogenic ) device and the piping system valve can also be used.

In the metallurgical industry in the oxygen pipeline system, use the handle of the ball skimmed off strict.

The main line in the pipeline and gas pipeline to be laid in the underground, the need to use full-bore welded rail type steel ball valve.

Regulate the performance of the requirements, need to use special ball valve structure with V shape.

In the petroleum, petrochemical, chemical, electric power, city construction, the working temperature of pipeline system in more than 200 ℃can use metal to metal sealed floating hard seal ball valve.