Posted by: Mr._Wizard on January 07, 2003 at 22:16:06

: : : I would like to have a small diameter nitro tank for the front of my old Vm68 but everything out there is too fat . Could I take a reg from a nitro tank and put it on a 9-12 oz steel CO2 tank and use that ? : : Making your own tank is a very involved process, and it's not cheap because of the machinery involved (a slug extruder for steel or aluminum tanks) and building ant testing prototypes to D.O.T standards, and then having D.O.T. inspectors on-site when you actually make the tanks. : : Taking an off-the-shelf tank, you'll need to find one rated by the manufacturer and D.O.T. approved for 3,000 psi (or 4,500 if that's the pessure you plan to use) working pressure with compressed air. CO2 tanks are only rated to 1,800 psi. : : See you on the field, : : -Bill Mills : So were could I find a steel tank the size of a 9-12 oz co2 tank that might be approved for 3000 ? In theory you could get a 9 0z bottle hydro tested to a higher pressure .. say 2k psi. if it passed you would have a 2k rated bottle with a 800 psi output but you would only get say 6 or 7 shots per cubic inch. You could also run the bottle @ 1800 psi and be legal with 5 shots per cubic inch.

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