| 主权项 |
1. A linear valve comprising:
a sleeve comprising a plurality of ports spaced circumferentially about the sleeve, wherein the plurality of ports are associated with a plurality of pressurized fluids, wherein the sleeve also comprises a control port hole to receive a pressurized fluid with a pressure level that corresponds to a selection of one of the plurality of pressurized fluids; a spool provided within the sleeve and at a position of a plurality of positions within the sleeve, wherein the spool comprises an internal chamber, wherein the spool comprises a plurality of openings corresponding to the plurality of ports of the sleeve and a control opening spaced circumferentially about the spool, wherein the plurality of openings are spaced apart in a manner that enables alignment of a given opening of the plurality of openings to a given port of the plurality of ports based on a given position of the spool within the sleeve, wherein alignment of the given opening to the given port provides access to the internal chamber and the control opening is in fluid communication with the control port hole; and an actuator for moving the spool in a linear motion to positions of the plurality of positions within the sleeve, wherein the given position is based on the selection of the pressurized fluid of the plurality of pressurized fluids that corresponds to the given port so as to align the given opening of the plurality of openings with the given port of the plurality of ports and to provide the pressurized fluid through the control opening to the control port hole. |
