![]() The argument in favor of air that the factories like to make is that the pressure of CO2 changes with temperature and air pressure does not. ![]() There are precautions to take with both but the dangers using air are much higher. CO2 pressures that you will be working with are around 800psi……air pressures are around 3000psi. handpump, you will see that CO2 filling is much cheaper than air. the cost of a SCUBA tank and DIN adapter, Also check out the cost of a 200 BAR. Before you buy, check out the cost of a CO2 cylinder vs. Some SCUBA shops will require you to be a member of a dive club or have insurance before they will fill an air tank for you. ![]() There is little problem having CO2 supply tanks filled, any fire extinguisher shop will do it and it doesn't cost a lot. For example, A CO2 pistol or rifle is usually cheaper in original cost than an air model, it is simpler inside and has less to go wrong….no gauges or regulators to worry about. I can give you a lot of reasons why CO2 is still better but I can’t give many in favor of air. Let me say from the start that I am still a strong believer in CO2. Today there is a particular trend towards the use of pressurized air instead of CO2. ![]() There’s a lot of chat on this subject to-day and a lot of opinions….Here’s mine….
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