As one of the leading stainless steel wafer butterfly valve,Website: , butterfly valve wafer type raised face, butterfly valve lug type raised face, stainless steel lug butterfly valve manufacturers and suppliers in China and equipped with a productive factory, Shanghai Hugo Valve Co.,Ltd is always at your service. Stainless steel wafer butterfly valve Description  1, The stainless steel wafer/ lug butterfly valve features a investment stainless steel body and disc.  Stem sealing is accomplished by utilizing the seat as the primary seal.The back up ring keeps the seal stationary. 2, The stainless steel wafer/ lug butterfly valve is ideal choice for applications in aggressive atmospheres and harsh wash down situations - often incurred in food plants. Valve materials of construction Body Materials: CF8 (304), CF8M(316)   Seat Materials: NBR, EPDM,PTFE, VITON Disc Materials: CF8 ,CF8M (With-pin, One stem no-pin, Double stem no-pin)  Stem Materials: SS416, SS304, SS316   Applicable standard  Size Range: 2~8"(DN50~DN200） Pressure: PN10, PN16, Class125, Class 150 Standard : ANSI,DIN,JIS  End Connection: Wafer, lug Operate: Manual, available for worm gear, double acting & spring return pneumatic and electric motorized.