The WABCO Twin Assembly Air Dryer is the perfect choice for any air system. This dryer is designed to provide 13% better drying capacity compared to other leading manufacturer’s models, and its premium desiccant provides greater water adsorption capability. It also comes with an oil coalescing cartridge and is equipped with a pressure relief safety valve. The ports are threaded for 14 NPTF, and 4/231/4" - 18 NPTF. It is the perfect choice for any air system, providing superior drying capacity and safety. FleetPride is your First Click in Heavy Duty®.