Liquefied petroleum gas as pneumatic valve what are the advantages and disadvantages

liquefied petroleum gas as pneumatic valve opening and closing is plug piece of pneumatic valve, sealing surfaces appear flat or cone, pneumatic disc make linear movement along the centerline of the fluid. Pneumatic valve stem form of exercise, lifting lever ( Pneumatic valve rod and hand wheel lifting) And lift rotating lever ( The handwheel with pneumatic valve rod rotating lifting, nut is located in the pneumatic valve) 。 Grain tube by pneumatic valve used throughout opened only close, not allowed to adjust and throttling. Pneumatic valve, pneumatic valve belong to mandatory canned liquefied petroleum gas as in pneumatic valve is closed, so must to pressure pneumatic disc, to force a sealing surface does not leak. When medium by pneumatic disc below 6 into the pneumatic valve, operating force required to overcome resistance, is pneumatic stem and packing of the friction force and the thrust produced by medium pressure, close the pneumatic valve force than the pneumatic valves open force is big, so the larger the diameter of the pneumatic valve stem, or pneumatic stem top bending failure happens.
liquefied petroleum gas as the advantages of the pneumatic valve:
, simple structure, manufacture and maintenance more convenient.
, small work schedule, opening and closing time is short.
, good sealing, sealing surface friction between the small, long service life.
liquefied petroleum gas as pneumatic valve disadvantages:
and fluid resistance is big, opening and closing the required force is larger.
, does not apply to take larger particles, viscosity, easy to coking of the medium.
and poor regulation performance.