Patent ID: 7331571

Claim:
An air operated leveling device for a motor vehicle suspension system, comprising: a housing having an interior disposition and an exterior disposition; a solenoid valve receptacle comprising: a solenoid valve chamber connected to said housing at said interior disposition thereof; and a chamber cover removably connected to said solenoid valve chamber, wherein said chamber cover has an air passage opening; an air fitting connected to said housing; a solenoid valve disposed within said solenoid valve receptacle, said solenoid valve having a first air passage and a second air passage, wherein said first air passage communicates with said air fitting and said second air passage communicates with said interior disposition of said housing through said air passage opening of said chamber cover; and an electrical connector connected to said housing and electrically connected to said solenoid valve; wherein said air passage opening of said chamber cover of said solenoid valve receptacle is always sealed with respect to said second air passage of said solenoid valve; and wherein said seal maintains air pressure at said interior disposition of said housing independently of a pressure loss at said air fitting.