URSV/Venturi ValveEHFCVNovember 22, 2021Chassis, Safety/Security Alfmeier Used in automotive vacuum tube and booster, it creates the venturi effect through the vacuuming of engine, to provide a larger negative pressure to the booster, which means larger force aid to brake, and relieve the foot force. Previous Post Non-Return Valves Next Post Sensor Valves Leave a ReplyCancel ReplyYou must be logged in to post a comment.