1、 The electric on-off butterfly valve has a strong sealing property. Its sealing forms mainly include the following two types: rubber seal and metal seal. The electric on-off butterfly valve is an automatic device, which controls the opening and closing of the valve through some power signals. It no longer requires human resources to control it, so as to save manpower and material resources. If the electric on-off butterfly valve breaks down in the middle, and the power signal cannot be used to control its opening or closing, don't worry. You can also choose to operate it manually. The effect is the same, so you don't need to worry about what will happen. This small fault will not affect the use of the electric on-off butterfly valve. 　　

Pneumatic butterfly valve is classified as pneumatic flange butterfly valve, pneumatic flange butterfly valve This product is composed of rubber sealed butterfly valve, carbon steel or stainless steel valve plate and valve stem. It is applicable to the effect of regulating flow and intercepting medium on water supply and drainage and gas pipelines with temperature ≤ 80~120 ℃, such as food, chemical industry, petroleum, electric power, textile, paper making, etc.