First, [pneumatic butterfly clip-on] Overview Our company has developed a soft seal center line of clip-off valve, double eccentric flange butterfly compact structure, 90 ° rotary switch easy, reliable sealing and long service life, is widely used in water , power plants, steel mills, paper, chemicals, food supply and drainage systems, as a regulator and due to use. Second, [Pneumatic Butterfly Valve Features] 1, the 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. Third, [Pneumatic Butterfly Valve] parameters Nominal by DN (mm) 50 ~ 2000 50 ~ 1600 Nominal pharmacological PN (MPa) 0.6 1.0 1.6 Seal Test (MPa) 0.66 1.1 1.76 Strength Test (MPa) 0.9 1.5 2.4 Temperature nitrile rubber: -40 ℃ ~ 90 ℃ Viton: -20 ℃ ~ 200 ℃ Suitable medium water, air, gas, oil and weak corrosive fluid leakage rate in line with GB / T13927-92 standard worm gear drive mode, electric, pneumatic, hydraulic, four, [Pneumatic Butterfly Valve] main parts material Part Name Material Body WCB, QT450-10, HT200, HT250 disc WCB, QT450-10, HT200, HT250 valve shaft seal Nitrile oil 2Cr13 Flexible graphite packing rubber V. Pneumatic Butterfly Valve [] to perform standard manufacturing standards GB / T 122387-89 flange standard GB9113-2000, GB17241.6-1998 structural length standard GB12221-89 inspection standards GB / T 13927-92