The AV-L5300 & 5400 Full Bore 3-Way Ball Valve is available with two configurations. L Port & T Port. The difference between the two is that the L Port version can offer complete shutoff depending on actuator type where as the T Port offers diversion only or constant flow form one port to another. AV-ARES is a compact, lightweight, and cost effective electric valve actuator that has been designed to be easy to install and use. With its simple design and easy installation, you can save time and money on your next project. AV-ARES electric valve actuators provide a reliable solution that will last up to 50000 operations without disruption. With components that meet or exceed strict quality requirements, you can rest assured that your application will run smoothly.