A typical sorting module includes a solenoid directional valve and a ________ to redirect parts.

A typical sorting module includes a solenoid directional valve and a ________ to redirect parts.

• A. Single acting cylinder
• B. Pneumatic motor
• C. Double acting cylinder
• D. Limit switch

Answer: (C)

Bidirectional pneumatic actuation is essential here. A solenoid directional valve sends air to move an actuator, and to redirect parts you need motion in both directions to position the diverter correctly. A double-acting cylinder receives air on both ends, so it can extend and retract on demand, giving precise control over where the parts are redirected. A single-acting cylinder can only push in one direction and relies on a spring to return, which limits control and timing. A pneumatic motor would rotate the mechanism rather than provide the straight-line positioning needed for redirecting, and a limit switch is just a sensor, not the device that moves the diverter. Hence, the bidirectional motion comes from a double-acting cylinder.

Bidirectional pneumatic actuation is essential here. A solenoid directional valve sends air to move an actuator, and to redirect parts you need motion in both directions to position the diverter correctly. A double-acting cylinder receives air on both ends, so it can extend and retract on demand, giving precise control over where the parts are redirected. A single-acting cylinder can only push in one direction and relies on a spring to return, which limits control and timing. A pneumatic motor would rotate the mechanism rather than provide the straight-line positioning needed for redirecting, and a limit switch is just a sensor, not the device that moves the diverter. Hence, the bidirectional motion comes from a double-acting cylinder.