Pressure Systems International celebrates 25th anniversary


SAN ANTONIO — During 2018 Pressure Systems International (P.S.I.) is commemorating the 25th anniversary of its development and introduction of the first automatic tire inflation systems (ATIS) for commercial vehicles.

P.S.I. and its partners celebrated the milestone during the annual Fleet Technology Event co-sponsored by Meritor and P.S.I. held here October 9-10.

During the past 25 years, P.S.I. has taken ATIS from a technology newcomer to being a popular feature specified on over 65 percent of trailers built in North America today, according to Jim Sharkey, vice president–global sales & marketing.  P.S.I. has set the trend and remains the market leader with over 1.4 million systems and with customers in over 45 countries, it is the only global ATIS solution, he said..

P.S.I.’s ATIS for trailers, chassis and dollies automatically adds air to the tire as the vehicle is rolling down the highway whenever the tire pressure drops below the tire’s cold pressure setting.

A warning light typically located in front of the trailer is illuminated when air is being added to one or more low tires.

The system has been specified by most of the top 100 fleets, with an ROI that has been validated to be typically less than one year, Sharkey said, adding that the payback comes in the form of fuel economy, reduced tread wear, fewer roadside calls, and lower labor costs.  Other key benefits include reduced CSA point violations, increased safety and improved efficiency of equipment and driver hours of service, he said.

Sharkey said P.S.I. made the system even better in 2005 when it released the patented ThermALERT feature, which is the only wheel end thermal event warning system of its kind.  Since that time, it has become so widely specified that it has been made a standard feature in 2018. Additionally, P.S.I.’s ATIS has the ability to tie into trailer telematics systems that send a signal directly to maintenance when the warning light is illuminated.

P.S.I.’s ATIS is also marketed and distributed in North America by Meritor as the Meritor Tire Inflation System (MTIS).

Pressure Systems International is a global provider of automatic tire inflation systems, tire pressure monitoring systems and related products for commercial trucks and trailers. It is a privately held company based in San Antonio and exports to 45 countries including China, India, South America, Africa, Australia and Europe.

For more information visit their website















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