Nitrogen Tire Filler
Here is a simple project. I have made a few of these handy portable Nitrogen tire filling tanks. Not much is required other then the tank, a regulator and some simple fittings and a hose. Most of what is shown here is an upgrade to an older version that I had made.
The need for an upgrade came about as the regulator had a limit in the range of 60 pounds if totally maxed out. This was not good for things where you want FAST filling or higher pressure tires on things like trucks, etc.
Things you will need -
Pressure Tank, Inert Gas CGA-580 Fitting. Typically for Argon, Nitrogen, etc.
(NOTE: CO2 Tanks use a different, non-compatible fitting!)
Regulator for Inert Gas (argon, Nitrogen, etc)with CGA-580 Fittings
Fittings (depends on your air hose and regulator type)
Air Hose with tire chuck or fitting of choice
I picked up the tank from a restaurant supply house they are typically used for Beer. Again, CO2 tanks will not work as you need CGA-580 fittings for the Nitrogen regulator, and no normal welding or gas supplier will put Nitrogen in a CO2 tank. So just make sure CGA-580 for the fitting and you are good to go. For the regulator, check out eBay or welding supply houses. Just watch the pressure ratings as they come in MANY different ranges. The original BEER regulator was only good to not much over 50lbs. The welding style that I'm now using is good to 125-150lbs range. This is good for shocks and other things that need a higher pressure such as AFFF fire systems that should be charged with Nitrogen.
Original Nitrofiller System
This is the original Nitrofiller system I made. It's a small aluminum pressure tank (DOT Rated) and has the old Beer regulator that was made by a company called Micromatic. It's a very nice part, and when I purchased it, was under 75 bucks with the optional protective gauge guard. The main shortcoming was low maximum pressure. Worked OK for the race car, but not for the Excursion. Also can't charge up an AFFF racing extinguisher that I now have.