Carbon-Fiber Air Tanks

Carbon fiber air tanks are built around a thin walled aluminum liner that is overwrapped with layers of carbon fiber and resin. This composite structure allows the cylinder to be rated for higher service pressures than traditional all aluminum tanks while keeping overall weight relatively low. In paintball, one of the most common configurations is the 68/4500 tank (approximately 68 cubic inches of internal volume at a 4500 psi service pressure). Larger options such as 77, 80, or 90 cubic inches are also used when players or formats prioritize higher shot counts between fills.

The composite design is governed by pressure vessel regulations that define inspection intervals and maximum service life. In many jurisdictions, carbon fiber cylinders are required to undergo periodic hydrostatic testing to verify structural integrity and are assigned a limited lifespan (often on the order of 15 years from the original manufacture date), after which they must be retired regardless of apparent condition. Cylinders carry manufacturing and requalification markings that indicate their applicable standards and test history.

When paired with a properly functioning regulator, carbon fiber tanks provide stable air delivery to markers across a wide range of conditions. Their balance of weight, capacity, and pressure rating has made them a standard choice in tournament environments and for players who shoot higher volumes of paint per outing. Use, filling, and inspection practices remain subject to local field policies, filling station procedures, and applicable safety codes.