APP Automated Valves are standard manual hand-turned valves modified so that they can be controlled by computer or other electronic means. These automated valves are compact, electrically operated, and have either torque adjustments or position limits. APP Automated Valves can be used in pneumatic or hydraulic systems. APP automates valves of various types, configurations, and sizes - almost any valve that can be turned by hand can be automated. Valves that can be automated by APP are either on-off (shutoff) or metering (flow control). Standard configurations that are automated include two-way, two-way angle, and three-way; typical port sizes range from ¼" to 1". An APP Automated Valve is driven by a 24 vdc electrical motor controlled by one of a number of APP valve controllers - examples include remote valves, servo valves, and multiple valve controllers. An electrical feedback mechanism monitors the position of a valve.