As one of the leading wafer eccentric butterfly valve,Website: , double eccentric wafer butterfly valve, double offset wafer butterfly valve, lug ecentric butterfly valve manufacturers and suppliers in China and equipped with a productive factory, Shanghai Hugo Valve Co.,Ltd is always at your service. Wafer eccentric butterfly valve Description 1, wafer/lug double eccentric butterfly valve call as high performance butterfly valve also, which can bear high pressure , with long longevity and good stability comparing with center line type butterfly valve. 2, wafer/lug double eccentric butterfly valve was improved based on the center line type butterfly valve, the main structure features is the stem axis deviated the disc center and valve body, the results of double eccentric makes the disc break away from the the seat after the valve was opened or closed, eliminated drastically the non-necessary excessive squeeze and scraping between disc and seat.  3, the significant reduction of scraping makes the wafer/lug eccentric butterfly valve can adopt metal material seat to improve eccentric butterfly valve’s application in high temperature field. 4, adopted eccentric structure, reduced the sealing ring’s friction, prolonged the valve’s longevity. Valve materials of construction Body Materials: Cast Iron/Ductile Iron/ WCB + S.S. , CF8/CF8M  Body painting : epoxy coating for iron material  Seat Materials: NBR, EPDM, VITON Disc Materials: Ductile Iron+EPDM,duplex S.S./CF8/CF8M/CF3M+EPDM  Stem Materials: SS416/420, SS304, SS316,S.S.316L, duplex S.S.    Applicable standard  Size Range: 4~120"(DN100~DN3000） Pressure: PN10, PN16, Class125, Class 150 Standard : ANSI,DIN,JIS  End Connection: wafer and lug Operate: Manual, worm gear, double acting & spring return pneumatic actuated and electric motorized.