Pipe breathing pneumatic valve technical requirements

and positive pressure pneumatic valve and vacuum pneumatic valve plate, seal of the contact surface to smooth, tight, without any defect.
, the pneumatic valve and pressure error is not more than + g in weight.
and sealing ring sealing surface should be vertical centerline with guide rod, should not be greater than its not basket straight degrees. mm。
, pneumatic valve tray with roundness and its not on the center line of the guide rod concentricity is not greater than. mm。
, pneumatic valve plate on the guide bar can move freely, should be no tilt and jam phenomenon.
and products before they go out on the positive pressure, negative pressure should be leak test, qualified to the factory.
pipe breathing pneumatic valve maintenance:
, breathing, pneumatic valve should be check regularly every year, check whether actions of pressure plate and the negative pressure plate are flexible, guide bar and seal ring contact surface without damage.
and reinstall the positive pressure plate and negative pressure plate, should guarantee the combination and strict, flexible guide rod.
, should also is the work pressure.