Linear Hydraulic Valve

A method comprising:

• receiving, at a controller, an indication of a selected fluid pressure;
• and
• actuating, by the controller, an actuator to move a spool movably disposed within a sleeve along a linear movement to a given position of a plurality of positions based on the selected fluid pressure,
• wherein the sleeve defines:
• a plurality of fluid ports arranged about the sleeve, each fluid port associated with a respective fluid pressure;
• and
• a control port in fluid communication with the plurality of fluid ports, and
• wherein the spool defines:
• a plurality of openings corresponding with the plurality of fluid ports of the sleeve and arranged about the spool to enable selective alignment of a given opening of the plurality of openings with a given fluid port of the plurality of fluid ports at the given position of the plurality of positions;
• and
• a control opening in fluid communication with the plurality of openings, and
• wherein the selective alignment of the given opening with the given fluid port at the given position allows flow of a pressurized fluid at the respective fluid pressure associated with the given fluid port through the control opening to the control port.