Pneumatic ball valve selection method ( 2)

is mainly used in the pipe inlet. Pneumatic ball valve structure simple, widely used in pneumatic ball valve in the irrigation system. Small volume, the flow resistance is small, defect is turned on or off too fast, middle water hammer in pipe ( The pipe flow speed suddenly change when the pressure rises) So on ZhuGanGuan unfavorable use pneumatic ball valve, available or dry, branch pipe on its end for wash, wash effect is good.
pneumatic ball valve selection methods:
the volume small, the working principle of the pneumatic ball valve is to rely on rotating sphere to pneumatic valve open or occlusion. Portable pneumatic ball valve switch. Can make a large caliber, reliable sealing, simple structure, convenient maintenance, sealing surface and the spherical often in the closed state, not easily be medium erosion, various industries widely used.
there are floating ball pneumatic valve, pneumatic valve, metal hard seal fixed ball ball pneumatic valve, pneumatic valve v-shaped ball, this ball pneumatic valve, pneumatic valve, pipeline ball pneumatic valve, pneumatic valve, the jacket type ball pneumatic valve, pneumatic valve, high pressure pipe cleaning forging pneumatic ball valve, tee, Cross pneumatic ball valve, pneumatic valve internal thread ball, integral ball pneumatic valve, cryogenic pneumatic valve, corrugated pipe pneumatic ball valve, pneumatic valve, eccentric hemisphere all welded ball pneumatic valves, pneumatic ball valve, etc. Pneumatic ball valve is roughly can be divided into categories.
ball core for precision castings, O type pneumatic ball valve USES the floating structure. Looks hard chromium plating processing, pneumatic seat by metal or enhanced ptfe material, flow crossing the same as the pipe diameter, flow capacity, small flow resistance, closing without leakage, generally do switch used pneumatic valve, especially suitable for high viscosity, containing fibers, granular media.
on ball core is a v-shaped incision, v-shaped ball pneumatic valve adopts fixed structure. Can realize the proportional control, flow characteristic is approximate equal percentage.
pneumatic ball valve can be applied to: pneumatic ball valve of the scope of application is very wide. From MMMM nominal size

nominal pressure from vacuum to MPa from -
work temperature ℃ ~ ℃.
the equipment and piping system of inflammable, explosive medium used in the soft seal pneumatic valve, ball, especially petroleum, chemical industry, metallurgy and other departments. More attention should be paid to refractory and fire prevention.
two position adjustment, sealed performance is strictly, mud, wear, reducing channel, opening and closing action quickly ( Turn/open/close) High pressure cut-off ( Differential pressure) Low noise, have spirit cave and gasification phenomenon, into the atmosphere of a small amount of leakage, usually. Small operation torque, small fluid resistance of the pipeline system, it is recommended to use pneumatic ball valve.
pneumatic ball valve can also be applied to light structure, low pressure cut-off ( Small pressure difference) Corrosive medium in the pipeline system.
low temperature ( Cryogenic) And also can choose pneumatic ball valve in the pipeline system.
to choose with v-shaped opening of the special structure of the pneumatic ball valve. Requires regulation performance.
working temperature in ℃ above piping system can choose the pneumatic ball valve of metal to metal seal. Petroleum, petrochemical, chemical, electric power, in the construction of rural.
to use strict degreasing process of pneumatic ball valve. Oxygen pipeline system in metallurgical industry.
need to use full size welded pneumatic ball valve. Head line of oil pipeline and gas transmission pipeline should be buried in the ground.