Dill Air Controls Products, LLC is a privately held company that was established in 1909. Previously owned by Eaton Corporation until 2005, Dill is now located in Oxford, North Carolina. Dill Air Controls manufactures and distributes air and liquid valves (primarily automotive valve stems) and tire pressure monitoring systems and components for several industries. The corporate office, manufacturing, and distribution is located in Oxford, North Carolina, U.S.A.