Oxygen generation check valve device

A check valve device comprising:

• a header and at least one check valve plunger;
• the header has an internal channel, at least one inlet-outlet port, and an outlet port, the at least one inlet-outlet port has a female seat;
• each said at least one check valve plunger has a male seat, an axial passage, a crosswise passage, and an orifice hole, the male seat is located on a top of the at least one check valve plunger, the female seat and the male seat have a corresponding shape and form an air tight seal when the female seat and the male seat are respectively engaged, the axial passage extends axially into a top of the at least one check valve plunger, the crosswise passage extends inwardly into a side of the at least one check valve plunger, the axial passage and the crosswise passage extend into a middle portion of the at least one check valve plunger, the orifice hole connects the axial passage to the crosswise passage;
• wherein the header has at least one port plug inserted into an outer end of at least one plunger port to create an air tight seal and to define an end of the at least one plunger port, and at least one internal channel port plug inserted into an outer end of the internal channel to create an air tight seal and to define an end of the internal channel.

A check valve device comprising:

• a header and at least one check valve plunger;
• the header has an internal channel, at least two inlet-outlet ports, and an outlet port located therein, the outlet port and the two inlet-outlet ports communicating with the internal channel, at least one inlet-outlet port of the at least two inlet-outlet ports has a female seat;
• and
• at least one compression device;
• wherein each said at least one check valve plunger has a male seat, an axial passage, a crosswise passage, and an orifice hole, the male seat is located on a top of the at least one check valve plunger, the female seat and the male seat have a corresponding shape and form an air tight seal when the female seat and the male seat are respectively engaged, the axial passage extends axially into a top of the at least one check valve plunger, the crosswise passage extends inwardly into a side of the at least one check valve plunger, the axial passage and the crosswise passage extend into a middle portion of the at least one check valve plunger, the orifice hole connects the axial passage to the crosswise passage;
• wherein the header has at least one plunger port, a bottom portion of the at least one check valve plunger is located in the at least one plunger port, the at least one compression device is located in the at least one plunger port below the at least one check valve plunger, the at least one compression device pressing the at least one check valve plunger toward a corresponding inlet-outlet port of the at least two inlet-outlet ports;
• wherein the at least two inlet-outlet ports of the header includes a first inlet-outlet port having a first female seat and a second inlet-outlet port having a second female seat;
• wherein the at least one check valve plunger includes a first check valve plunger and a second check valve plunger, the first check valve plunger has a first male seat, a first axial passage, a first crosswise passage, a first orifice hole, and a first base seat, and the second check valve plunger has a second male seat, a second axial passage, a second crosswise passage, a second orifice hole, and a second base seat;
• and
• wherein the at least one compression device includes a first compression spring and a second compression spring, the first check valve plunger is located between the first compression spring and the first inlet-outlet port, the first compression spring presses the first male seat of the first check valve plunger toward the first female seat of the first inlet-outlet port, the second check valve plunger is located between the second compression spring and the second inlet-outlet port, the second compression spring presses the second male seat of the second check valve plunger toward the second female seat of the second inlet-outlet port.