Don't want to pay high prices for a Nitrogen fill from the FBO on the field? Tired of lugging your buddy's system to your hangar when you need to service struts or accumulators?

Well, you're not alone! 

Beech Lister Eric T. built an awesome N2 system and has contributed his design solution to demonstrate how easy it would be to put a nitrogen filling station together. Eric reports a total cost of about $140 for his setup.

Here's his design:

Regulator:

TurboTorch 245-03P - this one goes 0 - 500psi. Found it on e-Bay NIB from an industrial supply house (Johnstone Supply). This was the hard part to find at a good price. $74.14

Hose:

McMaster Carr - 3000psi SS braided - 12 ft. Part 4468K591 $30.93

Schrader Coupler:

Schrader brand from Aircraft Tool Supply. P/N SK2043C. The basic Schrader coupler $12.95

Only trick when putting this all together was having to remove the "out" fitting on the regulator since it was a male threaded flare fitting, and the Hose needed a female 1/4" NPT.

I also ordered a fancier Schrader coupler from ATS that had an internal "pin" that screwed in and out to open the valve stem on a Schrader fitting. That was $28 (P/N 556)

I hooked this all to an 80 cu ft. Nitrogen tank. Found good prices on tanks at www.weldfabulous.com. Probably should have gotten a 40 cu. ft. tank instead for better hangar portability, but this will be just fine and cut my trips to the gas shop in half.

Only two things that are not optimal are:

1) size of tank as I mentioned above

2) it might be nice to have a rubber coated hose to prevent scrapes & scratches while working this thing around landing gear. I think a sit down with a nice roll of electrical tape can cheaply take care of that.