The AKAD1001 lift-axle air-control kit is available for Intraax and HT Series liftable suspensions. The kit delivers an increased flow rate when compared to the existing AK-127-1. Other improvements include a more accurate and readable liquid-filled gauge and more corrosion resistance and durability. The kit includes a ball valve, pilot valve, solenoid valve, gauge and regulator with a fiberglass-reinforced enclosure. Pilot ports and potential water traps face down or are placed above exhaust ports to help prevent water from collecting.