Bliwe Pneumatic wafer butterfly valve of the product by a rubber seal and carbon steel or stainless steel valve plate, stem composition. For temperature ≤ 80 ~ 120 ℃, such as food, pharmaceutical, chemical, petroleum, power, textile, paper, etc. to the drainage, gas pipeline flows and the role of the media as a closure to adjust. 
Bliwe Its main features are: 
1, novel design, reasonable, unique structure, light weight, open and close quickly. 
2, operating torque is small, easy to operate, saving smart. 
3, can be installed in any location, and easy maintenance. 
4, the seal can be replaced, reliable sealing performance bi-directional sealing Bliwe reach zero leakage. 
5, sealing materials aging, weak corrosion, long service life. 
Design Standard: GB/T2238-1989 
Flange dimensions: GB/T9113.1-2000; GB/T9115.1-2000; JB78 
Structure length: GB/T12221-1989 
Pressure test: GB/T13927-1992; JB/T9092-1999