I started with the same compressor as sparky4lawndart. Never under the illusion it would do 250 psi. After use it seems to top out at 100 psi which is more than plenty to operate the Robart retracts. If it went to 250 psi I'd have to cut it off or risk it overpressurizing the can. It works fine, I just let it run until the I unscrew the hose from the plane.