
How to Fill a Paintball Tank: CO2 and HPA Refill Guide
How do you fill a paintball tank? HPA tanks are filled using a fill station or scuba tank that delivers compressed air at 3,000 or 4,500 PSI. CO2 tanks are filled with liquid carbon dioxide from a bulk supply or exchanged at a sporting goods store. Both tank types require proper equipment, attention to pressure ratings, and a current hydrostatic test date. CO2 HPA Fill method Bulk liquid CO2 transfer or tank exchange Fill station (compressor) or scuba tank Fill pressure ~850 PSI (liquid weight determines fill) 3,000 or 4,500 PSI (depends on tank rating) Fill time 1–3 minutes 30–90 seconds Typical cost per fill $3–$5 $3–$5 Where to fill Paintball fields, sporting goods stores, welding supply shops Paintball fields, scuba/dive shops DIY at home Not practical (requires bulk CO2 tank) Possible with a scuba tank and fill adapter Overfill risk Tank rupture, burst disc failure Tank rupture, burst disc failure How to Fill an HPA Tank HPA tanks are the standard for most players. If you are unsure which tank type you have, check the label on the tank body. HPA tanks will be rated at either 3,000 PSI or 4,500 PSI and will say “compressed air” or “nitrogen.” For a full breakdown of the differences, see our CO2 vs HPA guide. ...








