What is the purpose of a sequence valve in a pneumatic system?

A sequence valve plays a critical role in managing the order of actuation of multiple components within a pneumatic system. Its primary purpose is to ensure that certain components activate in a specific sequence, which is essential for processes that require precise timing and coordination. For example, in an assembly line, you might need one actuator to extend before another to ensure proper alignment and function; the sequence valve facilitates that sequence by allowing air to flow only to the next component once the previous one has achieved its desired state.

This functionality is crucial in applications where simultaneous actuation might lead to mechanical collisions or efficiency losses, creating a need for controlled sequencing. The correct sequencing provided by the valve enhances operational accuracy and system reliability.

While other valves and components may manage air pressure levels, initiate emergency shutoffs, or enhance system speed, the unique focus of the sequence valve is on coordinating actions between multiple parts of the system, making it essential for the correct operation of automated processes.