Posted by: Tom Sparkman on June 30, 2003 at 14:07:30

: My dad is a machinest and works with compressed gasses alot at his job. He tells me that you can't overfill a CO2 tank unless you had a pump presurising the fill. He says that the 20 ounce CA tank will only hold "20 ounces" and that weighing is unnecesary. Since the CO2 is liquid he compares it to filling a 20ounce coke bottle from a 3 liter coke bottle meaning except for the fact that the coke will overflow the container eventually, if you had hoses and valves then you can't overfill the coke bottle. He says that only 20 ounces will fit period. This seems contradictory to the many warnings I've seen saying specifically "not to overfill" the CA tanks. Sorry, but he's wrong. A CO2 tank when full is only partially filled with liquid. Also, if it was completely full of liquid, you wouldn't be able to add more using a pump because you can pressurize a liquid - basic hydraulics. First, read this about CO2 dynamics: http://www.warpig.com/paintball/technical/gasses/co2dynamics.shtml Second, here is a diagram of CO2 pressure vs. fill% and temperature: http://www.warpig.com/paintball/technical/gasses/co2pv.gif Enjoy! Tom

Follow Ups: Re: FIlling CA from restraunt CO2 (correction) Tom Sparkman 14:13:06 06/30/03 (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: : : My dad is a machinest and works with compressed gasses alot at his job. He tells me that you can't overfill a CO2 tank unless you had a pump presurising the fill. He says that the 20 ounce CA tank will only hold "20 ounces" and that weighing is unnecesary. Since the CO2 is liquid he compares it to filling a 20ounce coke bottle from a 3 liter coke bottle meaning except for the fact that the coke will overflow the container eventually, if you had hoses and valves then you can't overfill the coke bottle. He says that only 20 ounces will fit period. This seems contradictory to the many warnings I've seen saying specifically "not to overfill" the CA tanks. : Sorry, but he's wrong. A CO2 tank when full is only partially filled with liquid. Also, if it was completely full of liquid, you wouldn't be able to add more using a pump because you can pressurize a liquid - basic hydraulics. : First, read this about CO2 dynamics: : http://www.warpig.com/paintball/technical/gasses/co2dynamics.shtml : Second, here is a diagram of CO2 pressure vs. fill% and temperature: : http://www.warpig.com/paintball/technical/gasses/co2pv.gif : Enjoy! : Tom [ Follow Ups ] [ Post Followup ] [ WARPIG Tech Talk - Air ]