Patent ID: 7556559

Claim:
A control and pressure relief valve for relieving air pressure from an automotive vehicle interior to an atmospheric pressure outside said vehicle interior, said valve adapted to be mounted on a valve mounting location, said valve mounting location having an inlet in fluid communication with said vehicle interior and an outlet in fluid communication with said atmospheric pressure, comprising: a frame member defining at least one relief valve disposed in said mounting location and operable to allow air to flow from said vehicle interior to atmospheric pressure when said air pressure in said vehicle interior exceeds a first predetermined pressure value, said first predetermined pressure value being greater than said atmospheric pressure, said frame member biased by springs disposed between said valve mounting location and said frame member, said frame member selectively sealing said valve mounting location inlet; and at least one louver defining a control valve disposed in said frame and operable to allow air to flow from said vehicle interior to said atmospheric pressure when said air pressure in said vehicle interior exceeds a second predetermined pressure value, said second predetermined value being greater than said atmospheric pressure and less than said first predetermined pressure value.