Ball valve applicable occasions
Due to the Ball Valve usually use rubber, nylon and ptfe as seat sealing
material, as a result its temperature is limited by seat sealing
material. The cutoff function of the ball valve is completed by tight
press between plastic seats under the function for mental ball by
medium. Seat sealing ring in certain contact pressure, local area come
about elastic-plastic deformation. The deformation can compensate the
manufacturing precision of ball body and the surface roughness, to
ensure the sealing performance.
Because of the Ball Valve seat sealing ring is usually made by plastic,
the structure and properties of the ball valves, should consider the
refractory and fireproofing, particularly in the petroleum, chemical,
metallurgical department, in inflammable and explosive devices and
pipeline system, more attention should pay to the fireproof and
refractory.
Usually, in two-position regulation, sealed performance strictly, mud,
wear, reducing channel, on-off movement.ball quickly (1/4 turn),
high-pressure deadline hoist (high pressure differential), low noise,
include holes and gasification small leakage phenomenon, into the
atmosphere, operating torque is small, small resistance of fluid piping
system, recommend using ball.
Ball valve is also applicable to the low light structure, the low
pewssure deadline (differentialis small), corrosive medium pipeline
system.
In the low temperature (cryogenic) device and pipe system in also can choose ball valve.
The oxygen in metallurgy industry in the pipeline system, using the ball valve with strictly defatted processing.
In the pipeline and gas transmission pipeline buried in the underground line needs, to use full-bore welding ball valve.
In a performance requirements, should take v-shaped open special structure of the ball valve.
In petroleum, petrochemical, chemical, electric power, urban
construction, working temperature in 200 degrees above the piping system
can choose the metal to metal sealing Ball Valves.
More products of valves
