D643H pneumatic metal seal butterfly valve
Product overview
Elastic metal sealing butterfly valve adopts "U" shaped stainless steel ring, the valve precision of the elastic sealing ring and after chrome plating and polishing disc sealing surface contact, the two organic combine, has many characteristics, such as high temperature, high pressure, low temperature, and therefore is widely applied in the medium temperature of 550 ℃ or less heat, steam, water and gas, oil, acid and alkali medium on the pipeline to adjust flow, truncation, or through the fluid.
Structural characteristics
A dimension A is offset between the shaft axis of the double eccentric sealing structure and the sealing face of the butterfly plate, and A dimension B is offset from the axis of the valve channel. When the butterfly plate from 0 ° ~ 90 ° opens, eccentric butterfly plate of the sealing surface is better than single faster from the valve seat sealing surface, when the butterfly plate is 0 ° rotation to 8 ° ~ 12 ° disc sealing surface can be completely from the valve seat sealing surface, so that the butterfly valve in the process of opening and closing, the relative mechanical wear between disc and seat sealing surface, squeezing corner schedule shorter, thus reduce mechanical wear and tear, extrusion deformation is more and more improve butterfly valve sealing performance and service life.
1, the use of "U" stainless steel sealing ring, seat has a certain degree of elasticity, no matter in high temperature, low temperature, it and butterfly plate have excellent sealing
2, it is metal to metal line sealing butterfly valve, butterfly plate sealing surface using surfacing welding stainless steel or cemented carbide, sealing surface wear resistance, long service life
3, butterfly plate streamline design, through rod, wear-resisting sleeve and other parameters make the butterfly valve has excellent sealing, temperature resistance, pressure resistance, wear resistance, corrosion resistance
4, the valve can be designed as flange connection and clamping connection
5, The driving mode can be manual, electric or pneumatic
Main parts and materials
The valve body material
Carbon steel (WCB, WCC, LCB)
Chromium molybdenum steel (WC5, WC6, WC9) alloy steel
Stainless steel (CF3, CF8, CF3M, CF8M, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti)
Within a material
Stainless steel (2Cr13, 1Cr18Ni9, 1Cr18Ni9Ti, 1Cr18Ni12Mo2Ti, 304, 316, 304L, 316L)
Carbon steel chrome molybdenum steel special steel
The connection form
Flange, clamp, weld, lug clamp
Drive way
Manual, worm wheel drive, electric, pneumatic,
