... to faceEN 558-1, BS5155 , ISO 5752Top flangeISO 5211BodyDuctile iron,Stainless steel,WCB,CIDiscDuctile iron,CF8,CF8M,C95400Stem416,420,431,316,304SeatNBR ... +FPMboltA193-B8A193-B8Msuitable mediumwater,oil,steamnitric acidancetic acid worm gear ball valve