A type of valve called a 3-Way Valve has three ports for the flow of fluid or gas. It is utilized to switch or combine the flow from two input ports to one output port, or the opposite. The valve is made up of a valve body with three openings and an internal mechanism that permits flow rerouting as needed. 3-Way Valve is offered in a range of sizes and materials. Depending on the needs of the application, this can be operated manually or with an actuator.