Which type of selector valve utilizes a camshaft to change the flow position of fluid?

The correct choice is the poppet type selector valve, which operates using a camshaft to control the flow position of fluid. In this design, the camshaft is integral to the valve's function, as it guides the movement of a poppet within the valve body. When the camshaft rotates, it moves the poppet in a way that either opens or closes the flow paths within the valve, thereby controlling fluid movement through various channels.

This mechanism allows for precise control over the fluid dynamics in systems such as hydraulic or pneumatic applications. The poppet's ability to seal effectively against the valve body enhances reliability and minimizes leakage, allowing for more efficient system operation. The design is particularly advantageous in environments where fluid flow requirements change, requiring a reliable method to redirect or halt fluid motion as needed.

Understanding the function of poppet type valves helps in diagnosing and troubleshooting systems where fluid control is critical, emphasizing their significance in various mechanical applications in aviation and other industries.