Automobile altitude valve unit assemblage

The utility model discloses an automobile altitude valve unit assemblage which comprises an altitude valve and a control valve, wherein an air inlet, an air outlet, an air exhaust opening and a control opening are arranged on the altitude valve; an air inlet and a control opening are arranged on the control valve; the altitude valve and the control valve are connected through a transition joint; a valve sleeve and a spring seat are arranged in the altitude valve. A valve rod is arranged on the valve sleeve, and a spring, the end part of which is arranged on the spring seat and the valve sleeve, is penetrated on the valve rod. The valve rod is provided with a valve at the end part neighboring to the air inlet end, and a valve spring is arranged between the valve and the air inlet. A piston with an O-shaped sealing ring is arranged between the valve and the spring seat. The other end of the valve rod is provided with a regulating screw and a dust cover with filtering hair. A rotating shaft which is movably connected with the valve sleeve is arranged in the control opening of the altitude valve. The utility model has the advantages of simple structure and stable performance.