Up for sale is my version of the "Franken Tank". I bought a 45 minute Scott scba tank here on AGN; replaced the valve with an Air Venturi unit, and the gauge with a Best Fittings 50 mm gauge. Assembled everything and aired it up. No leaks, no issues other than the fact that this tank is beyond it's 15 year service life. NO COMMERCIAL SHOP WILL FILL IT. If you have your own source of high pressure air and are looking for a storage vessel, this might be the ticket. Use at your own risk. Selling for $185 shipped (empty) to the conus. Payment by Pay - Pal f&f or usps money order. Not interested in trades or offers at this time. Please deal by pm. Thanks for looking. Herb