Lug Type Butterfly Valve: 1) Size:DN50-600 2) Nominal Pressure:PN10/PN16 Lug Type Butterfly Valve: SizeDN50 - DN600Design StandardAPI 609End flangeDIN2501,ANSI 150#Top flangeISO 5211 BodyCast iron,Ductile iron,Stainless steel,WCBDiscDuctile iron,CF8,CF8M,C95400Stem416,420,431,316SeatNBR,EPDMSuitale mediumSewage, Sea water, Air, Foodstuff and Oil