HPA (Compressed Air)
Overview
HPA, or High-Pressure Air, is the modern compressed-air system used to power paintball markers with consistent, temperature-stable performance compared to older CO₂ systems.
Key Points
- Operates at regulated output pressures typically between 450–950 PSI.
- Provides superior consistency and reliability across temperature changes.
- Essential for modern electronic and spool-valve markers.
- Stored in aluminum or carbon-fiber tanks with certified regulators.
- Requires periodic hydrostatic testing for safety compliance.
Details
HPA (High-Pressure Air) has become the universal propellant for competitive paintball due to its stability, consistency, and compatibility with advanced marker designs. Unlike CO₂, which expands and contracts dramatically with temperature changes, HPA provides predictable performance regardless of weather conditions. This allows markers especially spool-valve systems to maintain stable velocity, smooth cycling, and reduced shot-to-shot variance.
HPA is stored in tanks rated to either 3000 PSI (aluminum) or 4500 PSI (carbon fiber). These tanks release air through a regulator that steps pressure down to a usable level for the marker. Hydrostatic testing ensures structural integrity, with mandatory certification intervals to maintain safety.
The widespread adoption of HPA supports higher rates of fire, more refined tuning profiles, and consistent competitive performance across all formats of the sport.
Video References
Related Topics
Disclaimer: PaintballWiki is an independent educational reference. The information provided on this website is for general informational purposes only and is not endorsed by, affiliated with, or officially connected to any professional league, manufacturer, or governing body. Nothing on this site is legal, safety, medical, or professional advice.