The difference between the pneumatic ball valve and butterfly pneumatic valve 2)

pneumatic ball valve, butterfly is pneumatic valve opening and closing ceremonies is the biggest difference between a piece of a piece of wood, it is a pneumatic ball valve, pneumatic valve pneumatic butterfly valve plate and pneumatic valve ball around its own axis movement, pneumatic valve valve pneumatic valve plate upward or downward movement along the axis; The adjustment of pneumatic valve and gate valve opening to adjust flow; The ball is not easy to do this.
adjustment speed of the characteristics of the pneumatic valve is opened and closed, simple structure, low cost, but rigorous and pressure is bad. Similar characteristics and pneumatic valve gate, however, as a result of the limitation of volume and resistance to open and shut, it is difficult to achieve large diameter.
adjustment structure principle of the pneumatic valve especially for large diameter pneumatic butterfly valve pneumatic butterfly valve in the direction of the diameter of the pipe installation plate production. Cylindrical channels of pneumatic valve body, disc around the axis of rotation, the rotation Angle °? ° between ° rotating disk, pneumatic valves are open all licence conditions. Its simple structure, low cost, wide tuning range. Brake pneumatic valve is usually used in the grainy liquid, gas, fluid pressure loss is small, sealed performance is good, the cost is high, the impurities. Pneumatic valve seal, by contrast, slightly higher than the butterfly is better. Pneumatic seat tightness is by ball squeezing for a long time, it must wear faster than hemisphere pneumatic valve, pneumatic valve seal is usually elastic material is used, it is hard to use in high temperature and high pressure pipe. Pneumatic valve sealing rubber as the intermediary, it is better than a hemisphere, pneumatic valve, pneumatic ball valve, pneumatic valve gate metal hard seal changes significantly improve performance. Hemisphere pneumatic valve use for a long time, the pneumatic seat also produces a small amount of wear and tear, it can be adjusted, to continue to use dry and stem cells in the process of opening and closing packaging simple rotating °, evidence for leaks, and then compress packing gland bolts, no leakage in the packaging can be achieved, and the other is a small drainage pneumatic valve are still reluctant to use, used in pneumatic valve leakage.
pneumatic ball valve in the opening and closing process is held under both sides of the seat of power, it is better than a hemisphere of pneumatic valve opening and closing torque, improve the opening and closing torque between the nominal diameter is obvious differences, the pneumatic valves open and close, is to overcome the deformation of the rubber, greater torque. As of the pneumatic valve, pneumatic valve gate operating time is long, difficult.
pneumatic ball valves and cocks pneumatic valve is to belong to the same type of pneumatic valves, only its closure of a sphere, the sphere rotation in order to realize the pneumatic valves open and close a body around the center line. In pipe pneumatic valve is mainly used in the manufacture of cut, the distribution and change of flow direction of medium.
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