I bought a set of 4 of these valves for a full set of new 19.5" Vision 81A Heavy Hauler wheels fitted with the new 245/70R19. 5 Sailun works H-rated tires - all bought to fit our heavy DRV-5. to pull wheel. The maximum air pressure of these tires is 120 psi. I'm currently running at 110psi as I haven't started towing yet - I can pump it up to 120 if that seems necessary. However, these valves were easy to install and have handled 110 air pressure since they were installed about 4 months ago So far I haven't seen or experienced anything that leads me to believe they are good for long distance runs at 110 or even 120psi. I would buy again.