Rubber disc check valve Standard:ISO5752-10 Flange drilled:AWWA,BS,DIN Body:Cast iron/Ductile iron Size:DN50-600,PN10/16 Rubber disc check valveF TO F ISO5752-10,FLANGE ACC TO DIN, BS, ANSIBODY: CAST IRON/DUCTILE IRONDISC: STEEL PLATE+NBRBOLT: STAINLESS STEELSize:DN50-600,PN10/16 Rubber disc check valve