Butterfly valve

manualelectricpneumatic

D673H series of pneumatic slip-connection hard seal butterfly valve is used for flow regulation and cut-off of fluid in the pipeline of water supply and drainage in the fields of food, medicine, petrochemical, power plant, steel mills, industrial water treatment and high buildings. Product features: 1.Adopting three eccentric sealed structure, nearly no friction between valve seat and butterfly plate, with high performance of better sealing if closing tighter; 2.The use of stainless steel as material of seal ring, with double advantages of metal hard seal and flexible seal. Sealing performance is good under conditions of low or high temperature. With features of wear resistance and long life-time; 3.Cobalt-based surfacing hard alloy for the seal surface, with features of wear resistance and long life-time; 4.Large butterfly plate is hanging structured with high strength, big open area and low resistance; 5.The valve has two-directions sealing, unconstrained by flow direction, nor by spatial positions; 6.The driving device can be installed in multiple stations (90 ° or 180 °) for convenient operation; 7.Connection ways for option: Flange, double-clip, butt welding, lug-slip; 8.Driving devices for option: Manual, worm gear, electric and pneumatic; 9.Pipeline size: DN50 ~ DN1200;