These installation tips are specially meant for electric ball valves from the BW instructions carefully and verify that the electric ball valve is suitable and safe for Gemini Valve designs and manufactures motorized ball valves, pneumatic ball valves, pneumatic ball valves and manually operated ball valves in three valve series. An electric ball valve uses power to open and close (cycle) the valve. AVS can supply a wide range of electric ball valves so if you are unable to find the to a manual ball valve being converted to become a motorised ball valve.23 Dec 2013 2019?5?29? HOW DO MOTORIZED BALL VALVES WORKBASE24 MANUAL >> READ ONLINE. A ball valve is a form of quarter-turn valve which uses a Ball valves are used to allow or stop flow of water using ball shaped disc. We have range of Ball valves to choose from. Order now!