An Actuator Valve is a type of valve that uses an actuator to control the flow of liquids or gases, enabling automated operation without manual intervention. A Check Valve is a one-way valve that prevents backflow, ensuring that fluids flow in a single direction, commonly used in pipelines and industrial systems. An Electric Actuator is a device that converts electrical energy into mechanical motion, used to automate valves, dampers, or other mechanical components for precise and remote-controlled operation.