I can't tell you the number of times I've been packing up to leave a campground, I check the air pressure on my fifth-wheel tires, and find one of them is in need of about 5 or 6 pounds more. So I decide to leave camp and hit the first truck stop on my route for air. After driving a couple of hours and having checked 2 or 3 truck stops for air to no avail, I finally give up and end up at my next campsite with low tire pressure. Sound familiar? Enter the Viair 400P-RV Automatic Portable Compressor, part number 40047. This kit is made especially for RV owners.
The 400P-Automatic is VIAIR’s first Automatic shut-off function powerful portable tire inflator. This 33% duty cycle unit is capable of pressures up to 150 PSI and can be operated for up to 40 minutes at a time before needing to be rested (at up to 40 PSI). The 400P-Automatic comes with a close-ended gas station-style air gun for added convenience.
VIAIR portable air compressors and tire inflators (except automatic models) are shipped complete with an open-ended (free-flowing) air delivery hose. All models from 300P up to 450P-Automatic are equipped with a quick-connect coupling, a pressure gauge, an air filter element with replaceable air filtration media, a vibration-resistant sand tray, and a deluxe carry bag for simple stowage and increased portability.
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 aren’t 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 & effort to get tires inflated quickly.
VIAIR Corporation offers the most comprehensive line of fractional horsepower DC oil-less air compressors & air accessories for on-road, off-road, and industrial markets, as well as specialized markets such as medical devices. Their quality-engineered compressors and components are also used in the OEM segment, and have become the industry standard for both 12-volt and 24-volt automotive aftermarket applications worldwide.
My thanks to a fellow full-timer for pointing me to Viair. As always, I welcome your comments, or questions.