Also, because

the valve seat ring usually made of plastic, so the ball in the choice of the structure and performance, to consider the ball of fire and

fire, especially in the petroleum, chemical, and metallurgical sectors, flammable, explosive devices and media used in ball valve piping

system, but also should pay attention to fire and fire prevention.
Typically, the double-adjustment, garden tool, slurry, wear, reduced channel, the rapid opening and closing movement (1 / 4 turn open and close), high

pressure cut-off (large pressure), low noise, there is the phenomenon of cavitation and gasification, a small amount of leakage to the

atmosphere, the operating torque, fluid resistance of the piping system, the recommended valve.
Ball also

applies to the light structure, low cut-off (pressure difference), corrosive media, the pipeline system.
At

low temperature (cryogenic) equipment and piping system load cell can also be used.
In the

metallurgical industry in the oxygen pipeline system, to be treated with strict skim valve.
In the pipeline

and gas pipeline to be laid in the main line in the ground, the need to use the full bore ball valve welded.
Regulate the performance of the requirements, the need to use with a display

stand of the special structure of the

safty valve.

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