Flexible throttle valve working principle diagram, rely on the valve stem clamp flexible rubber hose and throttling effect, also can use gas pressure to replace the Industrial Valves stem compression hose. Flexible throttle valve has simple structure, small pressure drop, high operating reliability. Is not sensitive to pollution, usually working pressure range of 0. 3 - 0. 63MPa。 Application of pneumatic flow control valve to control of pneumatic actuators, than with hydraulic flow control valve control more difficult, because of gas compressibility. So use pneumatic flow control valve control the following points should be paid attention to, in case produce crawling: ( 1) Pipeline leak can't phenomenon; ( 2) Lubrication between the cylinder, piston is better; ( 3) Flow control valves should be installed near the gas cylinder or motor as far as possible; ( 4) As far as possible use export throttling governing way; ( 5) External loads should be stable. If the change of external load is bigger, should use hydraulic or mechanical equipment ( Such as gas and liquid linkage) To changes in the rate of compensation caused by load changes.
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