Parker Hydraulic Valves

Sequence valves are used to control the sequence of operation of two or more hydraulic actuators. The sequence valve pressure is set higher than the first actuator operation pressure. Once the first actuator has completed its cycle, the sequence valve opens allowing the second actuator to move. Parker’s line of pilot operated sequence valves include a series of internally piloted, externally drained valves and a series of externally piloted, internally vented valves.