Metal seated gate valve: 1)AWWA ,BS,DIN 2)Body:Ductile cast iron,PN10/ ... )Stem:Stainless steel 4)Size:DN40-DN1000mm Metal seated gate valve 1)AWWA ,BS,DIN 2)Body:Ductile cast iron,PN10 ... wheel: Ductile iron1.Metal sealing, concave design in the valve bottom2.Valve body inside and outside both with fusion bonded epoxy resin coating ...