![]() ![]() The liquid CO 2 then passes through the marker instead of the tank, evaporating and causing the marker to freeze. If the CO 2 bottle does not have an anti-siphon tube fitted, or is shaken while firing, the liquid CO 2 may enter the marker. Eventually, under sustained fire, and especially in cold weather, the tank can become so cold that ice crystals form on it. This expansion is not adiabatic and requires energy, causing the tank to cool as heat is used to expand the liquid CO 2 into gas. The two most common forms of compressed gas are carbon dioxide and high-pressure air (HPA).Ĭarbon dioxide A typical CO 2 canisterīecause CO 2 becomes a liquid when compressed, it must expand to a gas in order to be used by most paintball markers, although several older models actually require liquid CO 2 in order for proper operation. Paintball markers are powered by the expansion of gas stored in a compressed gas bottle. The technology used to design and build paintball markers has advanced over time, beginning with the original "Nel-Spot" bolt-action pistols, progressing to pump-action markers, then to semi-automatic mechanical markers, and finally culminating in the electropneumatic paintball marker. Speeds above 250 are typically needed to ensure the paintball breaks on impact the field limit is thus usually somewhere in between, often 260-280fps. Nearly every commercial field has, and strictly enforces, a rule limiting the muzzle velocity of a paintball at or below 90 m/s (300 ft/s). ![]() This velocity is sufficient for most paintballs to break upon impact at a distance, but not so fast as to cause tissue damage beyond mild bruising. An expanding gas (usually carbon dioxide or high-pressure air) forces a paintball through the barrel at a muzzle velocity of approximately 90 m/s (300 ft/s). A paintball marker is the primary piece of equipment used in paintball to tag an opposing player. ![]()
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