Breathing pneumatic valve inspection and maintenance. 2)

in order to ensure that new all-weather breathing fully use the performance of the pneumatic valve to achieve. Breathing air valve in the six months for inspection and maintenance. , check pressure pneumatic valve plate and vacuum pneumatic valve plate movement is flexible, pneumatic valve guide ring contact presence of lesions. , reinstall pressure pneumatic valve plate, promise to close contact, flexible guide rod. Breathe, enable the new pneumatic valve, must remove pneumatic valve plate between the shock. Operating pressure: grade A positive pressure: Pa ( Millimeter water column) Negative pressure: Pa ( Millimeter water column) B positive pressure: Pa ( Millimeter water column) Negative pressure: Pa ( Millimeter water column) C level positive pressure: Pa ( Millimeter water column) Negative pressure: Pa ( Millimeter water column)