The VIGIA Internal System is the first and most advanced hollow-axle Automatic Tire Pressure System in the world. First Developed in 1975, VIGIA has been used in more than 25 countries throughout Latin America, Canada, Western Europe, Australia and South Africa.

Unlike its sister product, the NM143, there is no external arm dropping from the body of the vehicle to support the rotor. Instead, the air lines are run through the axles and out the spindle. Then the rotor is independently mounted to the grease or oil hub and will support one or two hoses to the valve stems. This configuration is what we call our "Internal" Tire-Inflation System.

VIGIA internal system does not pressurize the axle. The air source is drawn from the air supply tank on the vehicle. Lines are run under the chassis and through the axles as described above. Because VIGIA does not pressurize the axle, there are no issues with leakage in or out of the axles or pressurization blowing the seals.

VIGIA NM248 "Internal" system can be installed on almost any trailer, with nearly any axle manufacturer or configuration, even older styles that are only "semi" hollow. We use only high-pressure rated hoses throughout the entire system, ensuring the maximum durability. Our rotor is self-contained and extremely rugged.