Su genuine pneumatic soft seal Butterfly Valve, Flanged double eccentric butterfly compact, 90 ° rotary switch easy, reliable sealing and long service life, is widely used in water plants, power plants, steel mills, paper, chemicals, food, etc. water supply and drainage systems, as the regulation and use of the characteristics of a deadline, this valve double eccentric structure, with more and more tightly sealed off function, a reliable sealing performance. 2, sealing materials made of stainless steel and nitrile rubber with matching, long service life. 3, rubber seals can be located on the body, it can be located in butterfly board, applicable to the different characteristics of the medium, for users to choose. 4, the disc using frame structure, high strength, flow area, flow resistance. 5, the overall paint, can effectively prevent corrosion and replace the seal as long as the seat material, can be used in different media. 6, the valve has a two-way sealing function, when you install from media flow control, are not affected by spatial location can be installed in any direction. 7. The valve structure unique, flexible operation, effort, and convenient. Standard parameter table nominal diameter 50mm ~ 1200mm flange standard ISO7005-2 1988 maximum working pressure 1.6MPa Shell test pressure of 1.5 times the working pressure seal test pressure of 1.1 times the working pressure Operating temperature range NBR seat -10oC ~ 80 o C, EPDM Seat -20oC ~ 120oC temperature to allow long-term use NBR seat 0oC ~ 60 o C ,, EPDM seat 0oC ~ 100oC material (see "Optional Materials Table" section) structure size ISO5752-88 drive type handle 50mm ~ 300mm 50mm Worm 50mm ~ 1200mm ~ 1200mm pneumatic electric 50mm ~ 1200mm polyester epoxy coating surface treatment, nylon 11, paint