As the advantages and disadvantages of pneumatic valve and installation and maintenance

by the pneumatic valve advantages, 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.
as the shortcoming of pneumatic valve is as follows:
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.
as the types of pneumatic valve according to the location of the pneumatic valve stem threads with external thread type, internal thread type. According to the flow of medium, have straight-through type, straight and Angle. By the pneumatic valve points, the form of the seal packing seal by the pneumatic valve and pneumatic valve bellows seal globe. Structure and installation note
as the structure of pneumatic valve:
as the structure of pneumatic valve pneumatic valve body has a straight-through, straight and right Angle type. Straight-through are the most common type of structure, but the maximum resistance of the fluid. Once-through fluid resistance small, usually for containing solids or the viscosity of fluid. Right Angle type pneumatic valve forged, more suitable for smaller drift diameter, high pressure by the pneumatic valve.
as pneumatic valve installation and maintenance should be paid attention to the following:
, hand wheel, lever operation by the pneumatic valve can be installed in any position.
, hand wheel, lever and wei mechanism, does not allow for lifting.
and the flow of medium should be consistent with the direction arrow shown in pneumatic valve body.