TUXING 6.8L 4500psi Carbon Fiber Diving Air Tank - Lightweight

In this review the TUXING 6.8L 4500psi carbon fiber air tank is assessed for divers and PCP shooters who need a high-capacity, lightweight cylinder. The bottom line: this tank is best for users who value reduced weight and high pressure capacity because its AL6061 liner with full-wrapped carbon fiber construction cuts weight dramatically while delivering up to 4500 PSI service pressure, making it a strong choice for extended dives or multiple fills for PCP air rifles. It is CE approved and built to withstand demanding environments, though it is not DOT approved.

Key Features

• 6.8L Capacity: Provides a generous internal volume for longer dives or multiple PCP fills without frequent refills.
• High Service Pressure: Rated 20-30 MPa / 3000-4500 PSI to store more air in a compact cylinder for extended use between charges.
• Carbon Fiber Construction: Full-wrapped carbon fiber with glass fiber over an AL6061 aluminum liner delivers a 70% weight reduction compared with steel and resists corrosion.
• Safety Testing: Designed to meet rigorous hydrostatic and burst testing typical of carbon fiber cylinders, giving confidence in pressure containment and durability.
• Versatile Applications: Suitable for scuba, snorkeling breathing support, PCP rifle and paintball filling, and emergency breathing apparatus in industrial or marine settings.
• Epoxy Coated Exterior: External surface treatment improves resistance to shock and environmental wear for field use.

Who It's For

This tank suits recreational and technical divers who need a lightweight alternative to steel cylinders, and airgun or paintball enthusiasts who want multiple fills from a single high-pressure source. The long service life and corrosion resistance also make it attractive for boat operators and industrial teams needing portable positive pressure breathing equipment.

Those who require DOT certification or who rely on specific valve threading standards at all filling stations should look elsewhere, since the product is CE approved only and ships with an M18x1.5 bottle screw thread size; cylinders and valves are delivered in separate packages, so buyers should confirm valve compatibility before use.

Pros & Cons

Pros

• Very lightweight due to full-wrapped carbon fiber over an AL6061 liner, easing carry and mounting.
• High service pressure up to 4500 PSI lets users store more air in a compact package.
• Durable epoxy coated exterior and strong safety test performance increase confidence for demanding environments.

Cons

• Not DOT approved, which may limit filling options or regulatory acceptance in some regions.
• Valve and cylinder arrive separately, requiring buyers to ensure they have the correct valve and fittings for immediate use.

Specifications

Capacity	6.8 L
Service Pressure	20-30 MPa / 3000-4500 PSI
Material	AL6061 aluminum liner, full-wrapped carbon fiber and glass fiber
Thread Size	M18x1.5 bottle screw thread
Certifications	CE Approved (Not DOT Approved)
Surface	Epoxy coated exterior
Estimated Service Life	15 years

Our Verdict

The TUXING 6.8L 4500psi carbon fiber tank is a strong value for divers and PCP users who prioritize weight savings and high-pressure capacity; its AL6061 liner and full carbon wrap deliver durability and cleaner stored air, while CE approval and robust testing support safe use in many applications. Buyers who need DOT certification or immediate valve compatibility should verify those requirements before purchase.

Frequently Asked Questions

Is this tank safe for diving?
Yes, the tank is built from an AL6061 liner with full-wrapped carbon fiber and passes rigorous safety testing; it is CE approved for diving use, but confirm local acceptance of CE certification.

Can I use this tank to fill PCP air rifles?
Yes, it is suitable for PCP rifle and paintball filling at pressures up to 4500 PSI; ensure you have the correct valve and fittings for your fill station.

Does the tank come with a valve installed?
No, cylinders and valves are shipped in two packages, so buyers must install or source the compatible valve upon receipt.