98Cu.Ft 4500psi PCP Refill Tank - Lightweight Carbon Fiber Cylinder

Our review of this 9 liter / 98 cu.ft carbon fiber refill tank finds it best suited for shooters and inflatable equipment users who need a high-capacity, portable high pressure solution. The single biggest reason to buy is the combination of a high 4500psi working pressure with a DOT-SP-14621 certification and a light aluminium/composite build that cuts weight compared with steel bottles. For those who refill PCP airguns, paintball HPA setups, or need a compact scuba/air source for short dives or emergency use, this tank delivers a dependable, transportable option.

Key Features

• Capacity: The 9 liter (approximately 98 cu.ft) reservoir gives extended fills for PCP airguns and paintball tanks without frequent refills.
• High working pressure: Rated to 30 MPa / 300 bar / 4500psi, it provides a high-pressure source compatible with most HPA and PCP refill requirements.
• DOT certified: The DOT-SP-14621 certification and a 3-year inspection cycle with a 15-year service life add regulatory assurance for safe use and long-term ownership.
• Lightweight construction: An AL-6061 aluminum alloy liner with carbon fiber and glass fiber winding reduces weight significantly versus steel, improving portability.
• Integrated valve system: The dual gauge valve with regulator and Foster-style quick disconnect hose makes fills and pressure monitoring straightforward and fast.
• Standard fittings: The bottle mouth M18x1.5 input thread and 7/8-14 UNF neck thread match common refill and mounting hardware for easy integration.

Who It's For

This tank is aimed at serious hobbyists and professionals who need a portable, high-pressure refill source: PCP airgun shooters wanting multiple fills in the field, paintball players or teams relying on HPA, and users who require a compact spare air supply for short recreational dives. The weight savings from the composite construction is particularly valuable when mobility matters.

It is less appropriate for casual users who only need occasional single fills or who do not have compatible fittings or a fill station. Also, those seeking a full scuba replacement for extended dives should look to purpose-built diving cylinders with dedicated dive certifications.

Pros & Cons

Pros

• High-capacity 9 liter volume supports multiple refills between charges for airguns or HPA gear.
• DOT-SP-14621 certification and a defined 3-year inspection cycle give confidence in compliance and safety.
• Lightweight AL-6061 liner with carbon fiber winding makes the tank much easier to carry than equivalent steel bottles.
• Integrated gauge/regulator and quick disconnect hose simplify the refill process on the go.

Cons

• Not a substitute for full scuba diving cylinders intended for prolonged or deep dives; users must verify suitability for specific dive use.
• Standard fittings require compatible hardware and adapters for some systems, which may add cost.

Specifications

Capacity	9 liters / 98 cu.ft (approx)
Working Pressure	30 MPa / 300 bar / 4500psi
Material	AL-6061 aluminum alloy liner with carbon fiber and glass fiber winding
Certification	DOT-SP-14621 certified
Inspection Cycle	3-year inspection, 15-year service life
Bottle Neck Thread	7/8-14 UNF
Input Thread	M18x1.5-6H

Our Verdict

The 98Cu.Ft / 4500psi carbon fiber refill tank is a strong choice for users who need a certified, high-pressure portable source that balances capacity and weight. With DOT certification, a robust valve/regulator assembly and standard fittings, it represents good value for field refills of PCP airguns and HPA paintball setups, provided buyers confirm compatibility with their fill hardware.

Frequently Asked Questions

Is this tank safe for transport?
Yes; it is DOT-SP-14621 certified and built with an aluminum liner and carbon fiber winding, but follow local transport rules for compressed gas cylinders.

Can I use it for scuba diving?
It can serve as a short-duration emergency or supplemental air source, but it is not a substitute for certified dive cylinders for regular or deep dives; check dive certification requirements.

What fittings does it use?
The bottle neck is 7/8-14 UNF and the input thread is M18x1.5-6H; it uses a Foster quick disconnect style hose for the fill station.