Posted by: deadeye9 on December 15, 2003 at 11:31:26

: I have an 80 cubic foot 3000 PSI scuba tank and i was wondering how many fills i'd get from it, does anyone know? Assumptions: 1) 80 cf scuba tank = 679 ci (water capacity) 2) 68 ci paintball tank 3) Temp = 70° F 4) Scuba tank is filled to 3000 psi, paintball tank is empty. After first fill, paintball tank is emptied to 1000 psi, and refilled. This is repeated. Pressure after first fill: 2727 psi Pressure after second fill: 2570 psi Pressure after third fill: 2427 psi Pressure after fourth fill: 2297 psi Pressure after fifth fill: 2179 psi Pressure after sixth fill: 2071 psi These are "ideal" examples, your results may vary, but not by much.

Follow Ups: Post a Followup Show your name as: DefaultRealnameBothNickname E-Mail address (eg: joeschmoe@aol.com): Show your e-mail address? DefaultYesNo Your Password: Don't have a password? CLICK HERE - Forgot your password? CLICK HERE Subject: Subject:Message: : : I have an 80 cubic foot 3000 PSI scuba tank and i was wondering how many fills i'd get from it, does anyone know? : Assumptions: : 1) 80 cf scuba tank = 679 ci (water capacity) : 2) 68 ci paintball tank : 3) Temp = 70° F : 4) Scuba tank is filled to 3000 psi, paintball : tank is empty. After first fill, paintball tank : is emptied to 1000 psi, and refilled. This is : repeated. : Pressure after first fill: 2727 psi : Pressure after second fill: 2570 psi : Pressure after third fill: 2427 psi : Pressure after fourth fill: 2297 psi : Pressure after fifth fill: 2179 psi : Pressure after sixth fill: 2071 psi : These are "ideal" examples, your results may vary, but not by much. [ Follow Ups ] [ Post Followup ] [ WARPIG Tech Talk - Air ]