Patent ID: 7318709

Claim:
A valve assembly, comprising: a housing; a pump mechanism disposed in said housing; a first plate mounted adjacent to said pump mechanism, said first plate having at least one aperture and at least one flexing flap; a second plate mounted adjacent to and abutting said first plate, said second plate having at least one aperture and at least one flexing flap; a compressor head mounted adjacent to said second plate, said compressor head having a discharge channel into which the at least one flap of said second plate opens; wherein said first and second plates are aligned such that the at least one aperture in said first plate is located adjacent the at least one flexing flap in said second plate and the at least one aperture in said second plate is located adjacent the at least one flexing flap in said first plate; and at least one outlet port in said compressor head for discharging fluid that has passed through said plates.