Posted by: Tom Sparkman on October 15, 2003 at 22:33:32

: Can I fill a CO2 bottle that withstands pressures up to 4500 psi with HP air at pressure to 4000 psi? Why are CO2 bottles so much cheaper than HP air bottles? CO2 and air are both gases and if you fill them in a bottle at the same pressure, they would react the same, so why do you need special bottles for CO2 and special bottles for HP air? : Thank you for answering! : Marco North CO2 bottles CANNOT handle 4500psi or even 3000psi. CO2 bottles are rated at 1800psi and are just that, bottles. It is filled by weight (i.e. "20 ounce" bottle) CO2 is stored inside the bottle as a liquid. CO2 pressure is mostly dependent on the temperature. Here's a chart and explanation: http://www.warpig.com/paintball/technical/gasses/co2dynamics.shtml http://www.warpig.com/paintball/technical/gasses/co2pv.gif HPA tanks are filled by pressure. They are rated for 3000psi or 4500psi and include a regulator to output the gas at a stable pressure (usually ~850psi). Tom

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: : : Can I fill a CO2 bottle that withstands pressures up to 4500 psi with HP air at pressure to 4000 psi? Why are CO2 bottles so much cheaper than HP air bottles? CO2 and air are both gases and if you fill them in a bottle at the same pressure, they would react the same, so why do you need special bottles for CO2 and special bottles for HP air? : : Thank you for answering! : : Marco North : CO2 bottles CANNOT handle 4500psi or even 3000psi. CO2 bottles are rated at 1800psi and are just that, bottles. It is filled by weight (i.e. "20 ounce" bottle) CO2 is stored inside the bottle as a liquid. CO2 pressure is mostly dependent on the temperature. Here's a chart and explanation: : http://www.warpig.com/paintball/technical/gasses/co2dynamics.shtml : http://www.warpig.com/paintball/technical/gasses/co2pv.gif : HPA tanks are filled by pressure. They are rated for 3000psi or 4500psi and include a regulator to output the gas at a stable pressure (usually ~850psi). : Tom [ Follow Ups ] [ Post Followup ] [ WARPIG Tech Talk - Air ]