The product consists of a handle rubber seal butterfly valve and valve plate carbon steel or stainless steel, stem composition. For temperature, such as food, pharmaceutical, chemical, petroleum, power, textile, paper and other water supply and drainage, gas pipes for regulating traffic and closure of media role ≤80 ~ 120 ℃. Its main features are: 1, novel design, reasonable, unique structure, light weight, open and close quickly. 2, the operation torque is small, easy to operate, energy smart. 3, can be installed in any position, and easy maintenance. 4, the seal can be replaced, reliable sealing performance bi-directional sealing 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 length of the structure: GB / T12221-1989 pressure test: GB / T13927-1992; JB / T9092 -1999 design standards: gb / t2238-1989 flange dimensions: gb / t9113.1-2000; gb / t9115.1-2000; jb78 length of the structure: gb / t12221-1989 pressure test: gb / t13927-1992; jb / t9092-1999 www.jflfamen.com www.lyfmdq.com www.zggnfm.com butterfly valve station station www.gnzhihuifa.com