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Different pneumatic butterfly valve seals are quite different
Pneumatic butterfly valves in the current market have many very good features. For example, the pneumatic butterfly valve in the market has outstanding sealing performance, high temperature resistance, and very simple operation, allowing many people to use it lightly, but we must pay attention to it. A bit, different pneumatic butterfly valve sealing is completely different, and some very basic issues need to be noticed during the use.
1. The feature of a single eccentric seal pneumatic butterfly valve is that the wear will be relatively low. The main principle of this kind of single eccentric sealing pneumatic butterfly valve is to use the rotary center of the pneumatic butterfly valve to form a certain offset, so that the butterfly valve can be separated from the sealing surface, and then opened, leaving a certain gap, so that the pneumatic butterfly valve can be squeezed when sealing. Pressure deformation, so that the sealing of the pneumatic butterfly valve increases, wear decreases.
2. The double-eccentric sealing pneumatic butterfly valve is to make the center of the valve seat form a deviation. During the opening process, gaps appear quickly, so that the disc can quickly leave the pneumatic butterfly valve seat within a short time. The design of the pneumatic butterfly valve can rapidly reduce or even eliminate the high wear conditions that may occur in the pneumatic butterfly valve with high sealing performance. The sealing performance of the pneumatic butterfly valve can be improved, and the service life can be rapidly improved.
3. The structure of the eccentrically sealed pneumatic butterfly valve is a three-section shaft structure. In this type of pneumatic butterfly valve, the disc plate is directly mounted on the shaft, so that the disc can be double-offset in the process of reopening. In the closed condition, it can also be a single eccentric condition, which in turn makes the sealing performance of the entire pneumatic butterfly valve more reliable.
4. The high-performance three-offset pneumatic butterfly valve is also a kind of butterfly valve with excellent sealing performance. The pneumatic butterfly valve is mainly composed of two specially-made sealing rings and multi-layer stainless steel plates. The special place lies in such pneumatics. The butterfly valve will make the sealing line between the valve plate and the valve seat show a conical shape, and the surface's resistance to friction, heat and corrosion are very powerful.
Different designs of pneumatic butterfly valve sealing effect will be slightly different, but the main purpose is to continuously improve the sealing of the pneumatic butterfly valve, and to continuously reduce the wear of pneumatic butterfly valve, and constantly increase the service life of pneumatic butterfly valve, etc., and many pneumatic butterfly valve Manufacturers will continue to update the design of pneumatic butterfly valves for these issues.
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