Pressure Systems International (P.S.I.)
Pressure Systems International (P.S.I.) is a manufacturer of automatic tire inflation systems, tire pressure monitoring systems, and related products for commercial trucks and trailers.
The P.S.I. ATIS (Automatic Tire Inflation System) can be installed on any type of trailer, including van, liquid tank, logger, flat bed, chassis, livestock, platform, drop frame, dump, deep drop, doubles, dry bulk, reefer, auto transporter, and military.