The sealing performance of traditional hard seal butterfly valves cannot be guaranteed and the leakage is large. In order to change this situation, after many modifications, the hard sealed butterfly valve was born with a three-eccentric butterfly valve. The three-eccentric butterfly valve is characterized by a high-temperature and corrosion-resistant alloy material deposited on the surface of the valve seat seal, and a multi-layer soft stacked seal ring is fixed on the butterfly plate. This process makes the three-eccentric butterfly valve more resistant to high temperature and high pressure environments and more corrosion-resistant than traditional butterfly valve products.

The pneumatic three-eccentric butterfly valve is another type of butterfly valve. It adopts a three-eccentric structure design and combines the pneumatic actuator to achieve fast, low friction operations. So what are the structure, working principle and advantages and characteristics of pneumatic three-eccentric butterfly valves?

In my country, there are countless manufacturers engaged in valve production, because the valve industry is already quite mature and the market demand is very large. So, how can we choose a regular and reliable valve manufacturer? Below, the editor will tell you a few tips.

In the past, due to the low level of domestic valve design and manufacturing, many people had a large preference for butterfly valves, but developed countries such as Europe and the United States have been vigorously promoting and using butterfly valves. At present, butterfly valves are no longer the past. The development of butterfly valve has undergone the concentric development process of single eccentric butterfly valve, double eccentric butterfly valve and triple eccentric butterfly valve.