The correct answer is:
- Cam-operated pneumatic valves are actuated by machine movement.
Cam-operated pneumatic valves use a cam mechanism to control the opening and closing of the valve. The cam is a rotating or sliding piece in the shape of a specially designed profile that moves in coordination with the machine's movement. As the cam rotates or moves, it pushes a lever or a rod connected to the valve, causing it to open or close based on the cam's profile.
The cam mechanism provides precise control over the timing and duration of the valve's operation, making it an effective way to regulate the flow of compressed air in pneumatic systems. By utilizing machine movement to actuate the valves, cam-operated pneumatic systems can efficiently control the flow of air and perform specific functions in various industrial applications.
