... , Ductile iron globe valves can be widely used for water,oils,steam and acid medium, operation manual can be handle, gear box ... , electric actuated or pneumatic actuated.2, Under the action of medium force, the opening force of ductile iron globe valve ... the disc's stroke. Valve materials of constructionBody Materials: Cast Iron, Ductile IronSeat Materials: Brass, Bronze, S.S.Disc Materials: ...