TUXING 4500psi Carbon Fiber Air Tank 6.8L - Lightweight PCP Fill

In this review the TUXING 4500psi Carbon Fiber Air Tank 6.8L is evaluated for PCP paintball and scuba support; the bottom line is that it is a purpose-built, lightweight composite cylinder for users who need a high-pressure, portable fill source. Our review finds the single biggest reason to buy is the combination of a 6.8 L capacity and a 300 bar working pressure in a bottle that weighs under 4 kg, making it a practical choice for field use where weight and corrosion resistance matter.

Key Features

• 6.8 L capacity: Provides substantial air volume for multiple fills or extended dives without adding excessive bulk to a kit.
• 300 bar working pressure: Delivers 4500psi performance useful for high-pressure PCP systems and some diving setups that accept composite cylinders.
• AL6061 liner with carbon fiber wrap: Combines a durable aluminum core with full-wrapped carbon and glass fiber for strength and reduced weight.
• Epoxy coated exterior: Improves corrosion resistance and helps the bottle withstand outdoor use in wet or salty environments.
• Safety test ratings: Hydrostatic test to 50MPa and minimum burst pressure of 102MPa point to conservative design margins for pressurised use.
• M18x1.5 neck thread: Standard straight thread mouth allows compatibility with a range of valves and regulators designed for that thread size.

Who It's For

This cylinder is aimed at PCP paintball players, airgun enthusiasts and recreational divers who need a lightweight, high-pressure bottle for filling or breathing support and who value a long service life and low corrosion risk. It is also appropriate for anyone who transports cylinders to a remote fill station where minimizing carried weight is important.

It is less suitable for users who require a pre-filled, certified scuba cylinder with an integrated valve or for operators who need routine service at facilities that only work with steel tanks; also those who need tanks with nonstandard neck fittings should look elsewhere.

Pros & Cons

Pros

• Noticeably lighter than comparable steel cylinders, making it easier to carry during field use.
• High working pressure of 300 bar supports modern PCP systems and higher fill demands.
• Durable construction with AL6061 liner and carbon/glass fiber winding gives strong creep and shock resistance.
• Long design working life of 15 years and corrosion-resistant epoxy finish extend usable life.

Cons

• Supplied as an empty bottle with no valve assembly included, so an extra regulator or valve purchase and proper fitting is required.
• Composite cylinders require regular retest intervals and careful handling compared with some traditional steel tanks.

Specifications

Capacity	6.8 L
Working pressure	300 bar / 4500psi
Hydrostatic test pressure	50 MPa (500 bar)
Minimum burst pressure	102 MPa
Neck thread	M18x1.5-6H
Actual weight	3.9 kg
Design working life	15 years

Our Verdict

The TUXING 6.8 L carbon fiber air tank is a strong choice for PCP players and outdoors users who prioritize weight savings, corrosion resistance and high working pressure. It represents good value for someone who will fit their own regulator or valve and needs a long-lived composite cylinder for portable fills and field use.

Frequently Asked Questions

Is this tank sold with a valve or regulator?
Answer. This listing is for the empty bottle; a separate valve or regulator is required to use it.

What is the service life and retest period?
Answer. The design working life is 15 years and the recommended retest period is every 3 years.

What materials make up the cylinder?
Answer. The cylinder uses an AL6061 aluminum alloy liner with full-wrapped carbon fiber and glass fiber and an epoxy coated exterior.