Posted by: Tom Sparkman on June 23, 2003 at 17:36:40

: I went to one of the welding shops in town today to get a bulk 2400 lb nitrogen bottle (no regulator needed). When I told the guy behind the counter what I was going to do with it he said that when I filled my bottle the pressure in the bulk bottle and my gun bottle would equalize at 1200 lbs and that would be all I would get in my gun bottle. He also said that the next time I filled out of the bulk bottle I would only get 600 lbs ect ect........... : Surely you can get more than 2 fills out of a bulk nitrogen bottle. Surely he was mistaken. He said he was familiar with paintball nitrogen bottles so I didnt press him to much since he does this for a living, but I cant help but think he was wrong : I would like a way to fill my own bottles instead of driving 90 miles one way to the paintball store for fills. By the way , the closest scuba shop is next door to the paintball shop. : Any help would be appreciated The only way that would be true is if your paintball tank is the same size as the bulk tank, which it isn't. For a good idea of how much you'll get, use the equation P1V1 = P2V2. For instance, if you PB tank is 10% the size of the bulk fill tank you get: P1=2400 V1=1 V2=1.1 (volume of bulk and PB tanks together) Solve for P2: P2 = P1*V1 / V2 P2 = 2400*1 / 1.1 P2 = 2182psi I'm willing to bet that your PB tank is smaller than 10% of the bulk tank, so the PSI you get will be higher still. Tom

Follow Ups: Re: bulk filling Greezypete 21:38:49 06/25/03 (0) 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 went to one of the welding shops in town today to get a bulk 2400 lb nitrogen bottle (no regulator needed). When I told the guy behind the counter what I was going to do with it he said that when I filled my bottle the pressure in the bulk bottle and my gun bottle would equalize at 1200 lbs and that would be all I would get in my gun bottle. He also said that the next time I filled out of the bulk bottle I would only get 600 lbs ect ect........... : : Surely you can get more than 2 fills out of a bulk nitrogen bottle. Surely he was mistaken. He said he was familiar with paintball nitrogen bottles so I didnt press him to much since he does this for a living, but I cant help but think he was wrong : : I would like a way to fill my own bottles instead of driving 90 miles one way to the paintball store for fills. By the way , the closest scuba shop is next door to the paintball shop. : : Any help would be appreciated : The only way that would be true is if your paintball tank is the same size as the bulk tank, which it isn't. : For a good idea of how much you'll get, use the equation P1V1 = P2V2. : For instance, if you PB tank is 10% the size of the bulk fill tank you get: : P1=2400 : V1=1 : V2=1.1 (volume of bulk and PB tanks together) : Solve for P2: : P2 = P1*V1 / V2 : P2 = 2400*1 / 1.1 : P2 = 2182psi : I'm willing to bet that your PB tank is smaller than 10% of the bulk tank, so the PSI you get will be higher still. : Tom [ Follow Ups ] [ Post Followup ] [ WARPIG Tech Talk - Air ]