Our 400P-RV Automatic powerful portable tire inflator kit will inflate 275/80/22.5 tires from 80 to 90 psi in just 30 seconds. While the unit is intended for RV use， it can be used for virtually any tire since it comes with accessories for more varied inflating situations than any other portable compressor kit on the market today. While the unit is intended for RV use， it can be used for virtually any tire since it comes with more accessories for more varied inflating situations than any other portable compressor kit on the market today. Portable compressors with automatic shutoff come into play when moving from tire to tire， and when checking tire pressure in the middle of a tire fill. A typical portable compressor must be turned off between tire fills， and anytime you want to check tire pressure. If you are not near the compressor， this can turn into running laps back and forth to the portable compressor to turn the unit on and off. Automatic portables do not work in this fashion and will save you time and effort to get tires inflated quickly.

Perfect for RV owners， trailers and campers with C or E class tires， this compressor is capable of inflating up to 150 psi

Heavy duty alligator clamps connect direct to a 12-Volt battery， the VIAIR 400P-RV should only use while the engine is running

A built-in pressure switch allows pressure to build within the airline up to 150 psi and will not be released until the trigger on the tire inflation gun is pulled， when the trigger is pulled， the pressure switch senses the pressure drop and actives the compressor to turn on

2 coil hoses connect with a quick connect coupler for over 50 ft. of extension， and inflation is easy with the tire inflation gun which includes a pressure release valve and tire gauge

Compressor and all accessories are stored in a zipper canvas carrying case with buckles to ensure secure contents