A double acting cylinder can be controlled by which type of valve?

A double acting cylinder is designed to exert force during both its extension and retraction strokes, meaning it requires control over both directions of movement. The 4 way, 2 position valve is specifically suited for this application because it has four port connections which allow for two distinct operational positions: one for extending the cylinder and another for retracting it.

When the valve shifts to one position, it directs pressurized fluid to one side of the cylinder, pushing the piston out. In the alternate position, the fluid flow reverses, allowing the other side of the cylinder to be pressurized for retraction. This ability to manage the flow of fluid in two directions is essential for effectively controlling the behavior of a double acting cylinder.

The other types of valves mentioned do not possess the required functionality to control both directions of a double acting cylinder. Therefore, the 4 way, 2 position valve is the correct choice for managing the operations of a double acting cylinder effectively.