Flexible meter seals butterfly valve flange details

Elastic hard sealing butterfly valve eccentric metal seal structure, sealing inthe form of metal to metal vehicle cargo seal, can be swapped metal-to-metal seal ring, stainless steel and graphite composite panels to metal seal ring. Hard seal butterfly valve in addition to the electric drive form are: manual, worm gear lever, pneumatic, etc. 

D43H, D343H flexible metal sealing butterfly valve flange flexible metal sealing butterfly valve using "U" shaped stainless steel ring, the valve through precision elastomeric cargo seal and polished chrome disc sealing surface contact, organic combination of the two, with a high temperature, pressure, temperature and other characteristics, it is widely used in medium temperature ≤ 550 ℃ heating, steam piping, water and gas, oil, acid and other different media for regulating the flow, cut off or connected fluid. 

A one-size-biased double eccentric sealing structure between the axis of the stem and disc sealing surface, and with the passage of a body axis offset size B. When the disc from 0 ° ~ 90 ° open, the sealing surface of the disc will be eccentric from the seat sealing surface faster than the single, when the disc rotation from 0 ° to 8 ° ~ 12 ° when the disc sealing surface can be completely from the seat sealing surface, so that the valve opening and closing process, the vehicle cargo seal surface between the disc and the seat relative to mechanical wear, squeezing corner shorter stroke, so that the mechanical wear, extrusion is more reduced, butterfly valve more improved sealing performance and service life. 

     1, using the "U" shaped stainless steel ring, the seat has a certain degree of flexibility in terms of high temperatures, low temperatures, it is both the disc with excellent sealing. 

     2, is a metal-to-metal sealing butterfly valve line, the disc sealing surface surfacing welding stainless steel or carbide plastic seals face wear resistance, long service life. 

     3, the disc streamline design, through the rod, wear bushings and other parameters so that the valve has excellent sealing, temperature, pressure, wear and corrosion resistance. 

     4, the valve can be designed flanged and wafer. 

5, drive optional manual, electric or pneumatic.