Dt(d)363H/W-C. I.P.R butt welded metal hard seal butterfly valve is suitable for opening and closing or adjusting medium on pipelines such as high temperature, high pressure, fire prevention and heat preservation. Its main features are as follows: Compact structure, small size, light weight, flexible operation, easy to use, three-dimensional eccentric elasticity or multi-level hard sealing structure, its sealing performance is reliable to achieve zero leakage This valve cannot be flanged, which brings great convenience and beauty to the pipeline and Baoba wrapping It has the characteristics of high temperature resistance, high pressure, corrosion resistance, wear resistance and other characteristics Transmission form: worm gear transmission, pneumatic transmission, electric transmission Adopt standard: welding size: GB12224; ANSI B16.25; DIN2559 Structure length: GB/T 12221-1989; API609 Pressure test: GB/T 13927-1992; API598