What is the purpose of a sequence valve?

A sequence valve is specifically designed to control the operation of multiple actuators in a predetermined sequence within a hydraulic system. This means that it allows for coordinated and timed actions of different components, ensuring that one actuator operates only after another has completed its action.

For example, in numerous applications such as construction machinery or automated assembly lines, certain tasks must be completed in a specific order to ensure safety and efficiency. A sequence valve facilitates this by allowing the system to direct fluid flow to the next actuator only when the preceding one has reached a designated position or completed its task, thus simplifying the control of complex operations.

In contrast, the other options focus on different functions unrelated to the sequence control aspect. Preventing backflow, filtering contaminants, and maintaining fluid viscosity are essential for system integrity and performance, but they do not encompass the primary functionality of a sequence valve, which focuses on managing the sequence of operations among actuators.