PSI recommends valve stem replacements

Pressure Systems International (PSI) is advising customers to purchase proprietary valve stem connection hoses as replacements for the Meritor Tire Inflation System (MTIS).

The reason, PSI said, is that a proprietary hose delivers 95% of available air pressure to the tires while aftermarket and will-fit parts can deliver much less. Less air flow can compromise the performance of the MTIS, sold through ArvinMeritor.

To make proprietary valves clearly identifiable, PSI has included a yellow stripe and imprinted the PSI name on the flexible valve stem connection hoses. The company has produced a video to demonstrate the differences air flow can have on the MTIS.