A syphon tube is designed to draw out the liquid contents of a container or reservoir. Commercial c02 tanks designed for filling the smaller 3.50z to 24oz c02 tanks that we use on our paintball markers will have a syphon tube installed, becuase its the liquid c02 that we want to fill our tanks with.
An anti-syphon tube is obviously designed to do the opposite. We dont want the liquid form of c02 entering our markers, so an anti-syphon tube can be installed to specifically draw out the endorthermically expanded gas form of c02 instead of the liquid.
Anti-syphon tubes must be custom installed for your marker, the tube must always face an upward direction to draw gas only and function optimally. Buying a c02 tank with a pre installed anti-syphon tube from someone else will do you no good if the tube faces into the liquid when fully screwed into your ASA.Anti-syphon tubes are ideal for people who use their c02 tanks attached directly to their ASA. If you have a horizontal tank holder on your tactical vest, like I do, the anti-syphon tube will have to be custom installed to suit your remote line and vest alignment. If you use a vertical pod pack, for example the popular NXE 4+1, it might not be necessary to install an anti-syphon tube as the gas will always be at the top of your tank near the valve.
Unless you are a proficient airsmith, please take your tank to a pro shop to have an anti-syphon installed as a mistake here can be fatal.
It is apparently acceptable to spell it both ways, syphon or siphon. I chose syphon becuase it looks cooler 
Tags: "anti-siphon tube", "anti-syphon tube", c02
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on Wednesday, February 13th, 2008 at 3:19 pm and is filed under Info, Paintball.
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