How many sequence valves are typically used to achieve reverse sequencing of two cylinders?

How many sequence valves are typically used to achieve reverse sequencing of two cylinders?

• A. One
• B. Two
• C. Three
• D. Four

Answer: (B)

Sequence valves control the order of actuator movement by allowing the next cylinder to move only after the first has reached a set condition. To get reverse sequencing of two cylinders, you need one valve to enforce the forward sequence and a second valve to enforce the reverse sequence. With just one valve, the order is fixed in one direction and reversing the cycle would require reconfiguring hardware. Having two valves gives you the flexibility to switch between forward and reverse sequencing, which is why two is the typical setup.

Sequence valves control the order of actuator movement by allowing the next cylinder to move only after the first has reached a set condition. To get reverse sequencing of two cylinders, you need one valve to enforce the forward sequence and a second valve to enforce the reverse sequence. With just one valve, the order is fixed in one direction and reversing the cycle would require reconfiguring hardware. Having two valves gives you the flexibility to switch between forward and reverse sequencing, which is why two is the typical setup.