Product Details: The Bendix AD-9 Air Dryer is a reliable and efficient air dryer designed to provide clean, dry air for a variety of applications. This air dryer features a 1/2-14 NPT supply port, 1/4-18 NPT control port, and 1/2-14 NPT delivery port. It can be used as a stand-alone unit and does not require any additional equipment. It utilizes a hard seat purge valve type and a 2-way sealed connector (male) for the heater connector. This air dryer is designed to provide reliable and efficient air drying for a variety of applications. FleetPride is your First Click in Heavy Duty®.