By Heather Burlingame, Senior Production Editor | September 28, 2010

The PressureGuard tire-inflation system is designed to keep a trailer's tires properly inflated at a preset level by routing air from the trailer's air supply to its tires. The system can be used on new and existing trailers and is designed to prevent air loss from the reservoir in the event of a sudden pressure drop, such as a blowout. Also, special valve stems with check valves prevent other tires from losing air.