Which is a good video on the working principle of plastic pneumatic butterfly valve? What are the application fields of pneumatic butterfly valves in motor products in the hardware industry?
1. Hardware ball valve mainly for daily machinery and electrical appliances
2. Electric and electronic ball valve mainly for instruments
3. Special ball valves to meet special needs
4. Ball valves for automobiles, motorcycles, diesel engines and gasoline engines
5. Large ball valves and plate ball valves mainly for railway rolling stock, trucks and construction machinery
