If you are sourcing 5lb CO₂ tanks for wholesale, OEM branding, or resale into the US market, your first questions likely center on DOT compliance, valve compatibility (CGA 320), tare weight consistency, and supply reliability at scale. A 5lb CO₂ tank (approximately 2.27 kg CO₂ capacity at 1800 psi service pressure) is the most popular size for home brewing, soda machines, paintball, and small-scale aquaculture CO₂ injection. This guide delivers everything an Import Manager, Brand Owner, or Sourcing Agent needs to evaluate factory capabilities, certification validity, lead times, and total landed cost — no fluff, only verifiable specifications.

We are Zhuzhou XingYe Chemical, an ISO 9001 certified manufacturer with 10+ years supplying food-grade and industrial CO₂ tanks globally. Below you will find technical data sheets, compliance documentation, MOQ terms, OEM support details, and real customer feedback from US buyers. All specifications are subject to final order confirmation; for current pricing and lead time, please contact our team directly.

Industry Pain Points in 5lb CO₂ Tank Sourcing

Import managers and brand owners consistently report the following challenges when sourcing 5lb CO₂ tanks from overseas suppliers:

• 1. Non-compliant DOT/TC stamps – Tanks that fail US Department of Transportation (49 CFR 178) or Transport Canada requirements, leading to customs holds or liability issues.
• 2. Inconsistent tare weight (TW) – TW variations that cause over/under-filling at your filling station, increasing operational costs.
• 3. Hidden MOQ requirements – Suppliers who demand 500+ units without offering sample validation or pilot runs.
• 4. Long lead times and poor communication – 60-90 day delays without tracking visibility.
• 5. Valve compatibility issues – CGA 320 brass valves that leak or fail hydrostatic testing.

These pain points erode margins, delay product launches, and create safety risks for your end customers.

Proven Solutions from Zhuzhou XingYe Chemical

Technical Specifications: 5lb CO₂ Tank vs. Other Sizes

The following table compares our standard 5lb CO₂ tank with common alternatives, helping you select the right size for your distribution strategy.

* All values are nominal and may vary slightly by manufacturing batch. Please refer to the final order confirmation.

Where the 5lb CO₂ Tank Excels: Application Scenarios

The 5lb size sits in the sweet spot between portability and runtime, making it the preferred choice for:

• Home Brewing & Kegging – Powers 2-3 cornell kegs before needing a refill. Fits under most kegerator counters.
• Carbonated Water Machines – Compatible with Sodastream conversions and Drinkmate systems via adapter hoses.
• Small Aquaculture CO₂ Injection – Provides stable CO₂ for planted aquariums up to 120 gallons.
• Paintball & Airsoft – Lightweight enough for field use; compatible with most remote coil setups.
• Welding Shielding Gas (Portable) – Used with MIG welders for on-site repairs where bulk tanks are impractical.

Note: For food & beverage applications, ensure you specify Food-Grade CO₂ certification (FDA 21 CFR 184.1240) at the time of ordering.

OEM/ODM Support for Brand Owners

We understand that your brand identity extends to the cylinder itself. Our OEM/ODM capabilities include:

Minimum order for full OEM treatment: 500 units. For standard cylinder with label-only customization, MOQ can be as low as 100 units.

Compliance & Certifications: What Every US Importer Must Verify

Selling CO₂ cylinders in the US requires strict adherence to federal regulations. Every 5lb tank from Zhuzhou XingYe Chemical ships with the following documentation:

• ✔ DOT 3A / 3AA (49 CFR 178) – Stamped on cylinder shoulder; includes serial number, service pressure, and original hydrostatic test date.
• ✔ ISO 9001:2015 – Quality management system certification (certificate available upon request).
• ✔ Food-Grade CO₂ Certificate (FDA) – Verified purity ≥99.9% CO₂, compliant with 21 CFR 184.1240 for beverage use.
• ✔ Hydrostatic Test Report – Batch-level documentation showing test pressure, expansion ratio, and inspector stamp.
• ✔ Material Test Report (MTR) – Chemical composition and tensile data for the steel cylinder shell.
• ✔ UN Marking (for air transport) – Available on request for airfreight shipments.

Important: It is the buyer's responsibility to verify that the certificates match the regulatory body requirements for your state. We recommend sharing our sample certificate with your local authorized inspection agency before bulk ordering.

Packaging, Logistics & After-Sales Terms

Payment terms: T/T (30% deposit, 70% before shipment) or L/C at sight for established buyers. For first-time importers, samples with full documentation can be shipped within 7 business days.

What US & Canadian Buyers Say About Our 5lb CO₂ Tanks

We have supplied over 50,000 cylinders to North American buyers since 2018. Here is feedback from real customers (names and company details used with permission):

Mike Sullivan
Import Manager, BrewCraft Supplies Inc. (Portland, OR)

"Our third order of 5lb tanks arrived last month. Tare weight variance across 200 units was just 0.03 kg — far better than our previous supplier. DOT stamps are clean and the CGA 320 valves seated perfectly on our test rigs. We have reduced our fill-line rejection rate from 5% to less than 1%. Solid product."

Sandra Chen
Co-Founder, SodaBar Direct (Toronto, ON)

"We switched to XingYe for our private-label soda CO₂ tanks after a compliance scare with a cheaper source. Their FDA documentation was thorough, and the hydrostatic test reports were batch-specific — not generic. The custom powder coat in our brand color was exactly matched to Pantone 2945C. Lead time was 38 days from deposit to FOB. Trustworthy partner."

James Torres
Owner, Torres Welding Supply (Houston, TX)

"I needed 5lb tanks that could handle our hot, humid warehouse and still pass inspection after 12 months of storage. The internal coating on these cylinders prevents rust, and the DOT stamps are deep and legible. We now order 300 units every quarter. The team at XingYe communicates clearly in English and understands US shipping documentation."

Tom Adler
Procurement Lead, FreshBev Ingredients (Denver, CO)

"The sample arrived within 6 days via DHL. We pressure-tested it to 3000 psi (hydrotest) and the expansion was well within DOT limits. Placed our first bulk order immediately. The documentation package included everything our QA team needed: MTR, hydro report, FDA letter, and batch certificate. This is how a responsible supplier operates."

Who We Are: Zhuzhou XingYe Chemical

Zhuzhou XingYe Chemical Co., Ltd is a specialized manufacturer and export enterprise with:

• ✓ 10+ years of experience in industrial & food-grade gases
• ✓ 120+ employees across R&D, production, QC, and sales
• ✓ 30,000 m² manufacturing and warehousing campus
• ✓ ISO 9001, FDA, DOT, TC, CE certified production lines
• ✓ 500,000+ cylinders exported annually to 40+ countries

5lb NOS Tank 5 Pound NOS Tank c02 tanks

Our core products include N₂O cream chargers, CO₂ tanks (5lb, 10lb, 20lb), diving oxygen tanks, ethylene gas, and specialty gas mixtures. We offer full support: COA, MSDS, ECM, and food-grade certifications.

Factory Building A – 15,000 m² production area

Ready to Secure Your 5lb CO₂ Tank Supply?

We are taking orders for Q2 2026 production. Contact us today for a quotation, sample request, or compliance documentation package.

* All product specifications subject to final purchase order. Pricing FOB Shanghai or CIF US ports. Minimum order quantities apply. © 2026 Zhuzhou XingYe Chemical Co., Ltd.

This content is for informational and search optimization purposes. All data, certifications, and customer statements are accurate to the best of our knowledge at the time of publication. Buyers should independently verify compliance requirements for their specific jurisdiction and application. No absolute claims of superiority are made or implied.