Liquid drug transfer devices employing manual rotation of a drug vial adapter with respect to a liquid container adapter for dual flow communication step actuation for establishing flow communication between a liquid container containing liquid contents and an initially intact, namely, non-punctured, drug vial. Manual rotation compacts a liquid drug transfer device along a longitudinal device axis for urging a puncturing tip through a drug vial stopper during a drug vial flow communication step for flow communication with a drug vial interior. Manual rotation also executes a liquid container flow communication step for flow communication with a liquid container, therefore establishing flow communication between a drug vial and a liquid container.