Cylinders are sequenced in the reverse direction using which arrangement?

Cylinders are sequenced in the reverse direction using which arrangement?

• A. Direct-acting sequence valve
• B. Pressure-reducing valve
• C. Two sequence valves
• D. Single-sequence valve

Answer: (C)

Cylinders are made to operate in a defined order by using valves that hold back flow until a set pressure is reached. A sequence valve does this for one leg of the circuit. When two sequence valves are used, they’re arranged to create a two-step sequence: the first valve allows its cylinder to start once the system pressure hits its preset point, and then the second valve opens to feed the next cylinder. This setup can be arranged so the order can reverse with the stroke direction, letting the second cylinder lead on the return cycle. In other words, two sequence valves provide the coordinated timing needed for opposite sequencing, which the other options don’t supply: a single valve handles only one step, a pressure-reducing valve isn’t about sequencing, and a single-sequence valve can’t coordinate two actuators.

Cylinders are made to operate in a defined order by using valves that hold back flow until a set pressure is reached. A sequence valve does this for one leg of the circuit. When two sequence valves are used, they’re arranged to create a two-step sequence: the first valve allows its cylinder to start once the system pressure hits its preset point, and then the second valve opens to feed the next cylinder. This setup can be arranged so the order can reverse with the stroke direction, letting the second cylinder lead on the return cycle. In other words, two sequence valves provide the coordinated timing needed for opposite sequencing, which the other options don’t supply: a single valve handles only one step, a pressure-reducing valve isn’t about sequencing, and a single-sequence valve can’t coordinate two actuators.