The advantages and disadvantages of high pressure by the pneumatic valve

as pneumatic valve pneumatic valve stem axis and the vertical pneumatic valve seat sealing surface. According to the mobile form of pneumatic valve, pneumatic valve seat with pneumatic disc change in his itinerary directly proportional relationship. Because this pneumatic valve open or close the pneumatic valve stem travel relatively short, and with very * cut function, and due to the change of pneumatic seat his trip proportional relationship with the pneumatic valve, is very suitable for the traffic regulation. Pneumatic open or close the valve stem travel relatively short, and very * cut off action, make the pneumatic valve is very suitable for used as medium cut or adjust and throttling. Advantages are:
as of pneumatic valve. By the pneumatic valve has simple structure, manufacture and maintenance more convenient. 。 By the pneumatic valve working stroke is small, opening and closing time is short. 。 By the pneumatic valve sealing, sealing surface friction between the small, long service life.
once by the pneumatic valve is fully open, the pneumatic seat and will no longer have contact between pneumatic valve sealing surface, thus its sealing surface mechanical wear and tear is small, as most as pneumatic valve pneumatic seat and disc is easier to repair or replace the whole pneumatic sealing components without removed from the pipeline, valve for pneumatic valves and pipeline welding into one occasion is very applicable. Flow direction of medium through this kind of pneumatic valve has changed, so stop pneumatic valve flow resistance is higher than other pneumatic valves. Disadvantages:
as of pneumatic valve. By the pneumatic valve fluid resistance is big, required when opening and closing force is larger. 。 By the pneumatic valve is not applicable to medium with larger particles, viscosity, easy to coking. 。 By the pneumatic valve and poor regulation performance. As the types of pneumatic valve according to the position of the pneumatic valve stem thread points have male type by the pneumatic valve, the female by the pneumatic valve. According to the flow of medium, have straight-through as pneumatic valve, pneumatic valve and Angle type once-through deadline by the pneumatic valve.
commonly used by the pneumatic valve has the following kinds:) Angle type by the pneumatic valve; In Angle type by the pneumatic valve, fluid change a direction, so that through this pneumatic valve pressure drop is smaller than conventional structure of the pneumatic valve. ） Once-through as pneumatic valve; In once-through or Y stop pneumatic valve, pneumatic valve flow channel and the mainstream way into a diagonal lines, so that the flow state damage than conventional stop pneumatic valve, thus by pneumatic valve pressure loss and the corresponding small. ） Plunger deadline pneumatic valve: this form by the pneumatic valve is normal as variant of pneumatic valve. In the pneumatic valves, pneumatic disc and seat is usually designed on the basis of the principle of plunger. Pneumatic polishing disc pillars plug connected to pneumatic valve stem, seal is set in the column inserting two elastic sealing ring. Two elastic sealing ring with a set of rings is separated, and through the air valve cover nut to the load of the pneumatic valve cover pressed around the plunger seal.