Check the listing for details. 1/2" Brass Motorized Ball Valve, Full Port, 9-24V AC/DC, 2 Wire Auto Return. Condition: New. Listed at 21.42 USD. Description: Motorized ball valves provide an energy-efficient option compared to solenoid valves, particularly for extended periods of operation. They primarily use power when opening and closing, with minimal consumption once fully open. This enables continuous operation without the concern of overheating or premature failure. We recommend using Teflon tape to ensure the sealing of NPT threads. .Description: Motorized ball valves provide an energy-efficient option compared to solenoid valves, particularly for extended periods of operation. They primarily use power when opening and closing, with minimal consumption once fully open. This enables continuous operation without the concern of overheating or premature failure. We recommend using Teflon tape to ensure the sealing of NPT threads. .