The Bendix AD-9 Air Dryer is the perfect solution for your air system needs. This air dryer is designed to function as a stand-alone unit and does not require any additional equipment. It features a 1/2-14 NPT supply port, 1/4-18 NPT control port, and 1/2-14 NPT delivery port. The AD-9 utilizes a hard seat purge valve type and a new desiccant that works longer than traditional desiccants. This Air Dryer is the perfect choice for your air system needs. FleetPride is your First Click in Heavy Duty®.