sequence valve

sequence valve

Retraction of main strut. Doors retraction line is cut-off by check valve.Main strut is retracted. Rod opens the valve. Pressure is fed for doors retraction.A type of flow valve that performs a series of actions in sequence, each completion starting the next. For example, sequence valves are used in an aircraft hydraulic system to cause the wheel-well doors to open fully before the landing gear is released from its uplocks.