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Ball valve is used in what occasion
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Ball valve is used in what occasion

Because the ball valve usually use nylon and rubber, ptfe as seat sealing material, therefore its use temperature is limited by seat sealing material. As function of ball valve is on the metal sphere under the action of medium, in between the plastic seat clamp to complete (floating ball valves). Seat sealing under the certain contact pressure effect, elastic-plastic deformation of local region. This deformation can be compensation sphere manufacturing precision and surface roughness, guarantee the ball valve sealing performance.
And due to the seat sealing usually adopt plastic ball valve, so the ball valve on the structure and performance of the choice, want to consider the refractory of ball valves and fire prevention, especially in petroleum, chemical industry, metallurgy and other departments, the equipment and piping system of inflammable, explosive medium used in ball valve, fire and fire prevention should be paid attention to more.
Usually, in two position adjustment, sealed performance is strictly, mud, wear, reducing channel, opening and closing movements quickly (1/4 turn open/close), high pressure cut-off (differential pressure), low noise, wind cave and gasification phenomenon, is a small amount of leakage to atmosphere, small operation torque, small fluid resistance of the pipeline system, it is recommended to use ball valves.
Ball valve can also be applied to light structure, low voltage cutoff (small) differential pressure, corrosive medium in the pipeline system. In low temperature, cryogenic device and also can choose ball valves in the piping system. Oxygen piping system in metallurgical industry, the need to use strict degreasing treatment of ball valve. Mains in oil pipeline and gas transmission pipeline should be buried in the ground, the need to use full size welded ball valve. When the request has the regulation performance, need to choose with v-shaped opening of the special structure of ball valve. In the petroleum, petrochemical, chemical, electric power, city construction, the working temperature above 200 degrees of piping system can choose metal to metal sealed ball valve.

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