The Complete Guide to CO2 Cartridge Sizes: What Every B2B Buyer Should Know in 2026
Author: James Carter | Senior Gas Solutions Specialist, Zhuzhou XingYe Chemical Co., Ltd.
James has spent over 15 years in the industrial and food-grade gas supply chain, helping North American importers and brand owners optimize their gas cartridge sourcing. He holds a degree in Chemical Engineering and is a frequent contributor to industry sourcing guides.
CO2 cartridge sizes vary primarily by volume (in grams or liters), thread type, and intended application. The most common sizes for commercial use range from 8g mini cylinders (paintball, airguns, soda makers) up to 2000g large-format tanks (dispensing, welding, beverage carbonation). As a B2B buyer, understanding these sizes in relation to pressure ratings, regulatory compliance (DOT/UN, CE), and supply chain reliability is critical. This guide breaks down the standard CO2 cartridge sizes used across North America and Europe, with a focus on sourcing from a factory that can meet OEM/ODM, quality assurance, and fast delivery requirements.
The Challenge: Inconsistent Sizing & Compliance Risks
Import managers and sourcing agents often face three major pain points when procuring CO2 cartridges:
- Incompatible dimensions: A 12g thread cartridge from one supplier may not fit a specific regulator or dispenser from another brand.
- Certification gaps: Without proper DOT (U.S.) or CE (EU) markings, shipments can be delayed or rejected at customs.
- Unreliable volume claims: Some suppliers overstate gas capacity, leading to underperformance in applications like whipped cream dispensers or beverage systems.
To solve these challenges, buyers are increasingly turning to vertically integrated factories that control both the cylinder manufacturing and gas filling processes – ensuring each cartridge meets strict industry standards.
Standard CO2 Cartridge Sizes: A Technical Reference Table
Below is a comparison of the most common CO2 cartridge sizes requested by North American buyers. All specifications are based on industry norms; please confirm exact dimensions and pressure limits with your supplier.
| Size (grams) | Common Application | Thread Type | Working Pressure (PSI) | Typical MOQ (units) |
|---|---|---|---|---|
| 8g | Paintball, airsoft, mini soda chargers | M10x1.5 (threaded) | 850–1000 | 5,000 |
| 12g | Whipped cream dispensers, seltzer makers | M10x1.5 or 3/8″-24UNF | 850–1000 | 10,000 |
| 16g | Small beverage carbonation, tire inflators | M10x1.5 | 850–1000 | 5,000 |
| 20g | Portable carbonation, air rifles | M10x1.5 or M18x1.5 | 850–1000 | 3,000 |
| 33g / 44g | Industrial welding, larger inflators | 7/8″-14UNF or 5/8″-18UNF | 1800–2200 | 2,000 |
| 580g / 615g / 640g | Bulk whipped cream, beverage dispensers | CGA 320 – pin valve | 750–900 | 500 |
| 2000g (2kg) | High-volume dispensers, soda fountains | CGA 320 or international 5/8″-18UNF | 750–900 | 200 |
* Working pressure may vary depending on fill ratio and environmental temperature. Always consult your specific regulator or equipment manufacturer’s guidelines.
Why Sourcing CO2 Cartridges from a Certified Factory Matters
Factory view: automated filling and testing lines
At Zhuzhou XingYe Chemical Co., Ltd., our CO2 cartridge production adheres to the following compliance frameworks:
- ISO 9001:2015 certified quality management system.
- DOT (U.S. Department of Transportation) approval on all steel and aluminum cylinders exported to North America.
- CE / EN 1964 compliance for European markets.
- Food grade certification (FDA 21 CFR 170-199) for CO2 used in beverage and culinary applications.
- Each batch includes a Certificate of Analysis (CoA) and Material Safety Data Sheet (MSDS).
With a factory area of 12,000 m², dedicated R&D team, and annual capacity exceeding 20 million gas cartridges, we can handle both standard runs and full OEM/ODM customization – from cylinder branding to packaging design.
Critical B2B Procurement Parameters
MOQ, Lead Time & Logistics
| MOQ | Standard sizes: 500–10,000 units per SKU. Lower MOQ possible for trial orders (subject to negotiation). |
| Lead Time | 15–25 working days for stock sizes; 25–35 days for OEM/ODM orders (including cylinder labeling and custom packaging). |
| Shipping Terms | FOB (Shanghai / Ningbo), CIF (major US ports: LA, NY, Savannah). Air freight available for urgent samples. |
| Packaging | Inner: shrink-wrapped trays or individual blister packs. Outer: export-grade corrugated cartons or pallets with IPPC heat-treat certificates. |
| After-Sales | Quality guarantee against leakage, threading errors, or incomplete fill. Replacement or credit negotiable within 30 days of receipt. |
OEM/ODM Capabilities
Many brand owners and importers demand customization beyond a simple label. We offer:
- Cylinder color & branding: Full-color sleeve printing, embossing, or laser engraving.
- Thread & valve variations: Conversion to CGA, UNF, or proprietary thread standards.
- Gas purity & mixture: 99.95% pure CO2 (food grade) or blended gases for specialty applications.
- Packaging design: Retail-ready hang tags, QR codes linking to user manuals, and gift box options.
Our engineering team can adapt existing cartridge molds to meet your exact dimensional specifications – a critical advantage when sourcing non-standard CO2 cartridge sizes for niche equipment.
Real-World Applications by Size
8g–16g: Precision & Portability
Used extensively in paintball markers and airsoft pistols. The small size allows multiple reloads without bulky equipment. For beverage applications, 8g cartridges fit portable soda chargers like SodaStream adapters.
20g–44g: Industrial & Specialty
co2 cartridge dimensions dimensions of a co2 cartridge co2 cartridge
Common in tire inflators, life raft inflation systems, and CO2 welding guns. The higher pressure rating requires reinforced cylinder walls – our 44g cartridges are DOT-approved for 1800 PSI working pressure.
580g–2000g: Bulk & Commercial
Preferred by catering companies, bars, and beverage distributors. The 615g size dominates the whipped cream industry, while 2000g tanks are standard for soda fountains. All large formats use a pin-valve system compatible with CGA 320 regulators.
What Our Clients Say
“We switched to XingYe for our 12g CO2 cartridges after experiencing thread inconsistencies from another supplier. Their QC is excellent – zero returns in 6 months.”
– Mike H., Import Manager, SoCal Beverage Supply (USA)
“Ordered 50,000 units of 615g cream chargers with custom branding. The lead time was 22 days – even faster than promised. The print quality is top-notch.”
– Sarah T., Brand Owner, Whipped Delights (Canada)
“As a sourcing agent, I need a factory that can handle both small trial runs and large volume orders. XingYe’s flexibility on MOQ and their willingness to adjust cartridge dimensions for our OEM design set them apart.”
– David L., Sourcing Agent, GasLink Procurement (USA)
“Their 2000g CO2 tanks helped us reduce refill frequency in our chain of sports bars. The DOT certification gave us peace of mind during health inspections.”
– Jason R., Operations Director, GameDay Bars (Florida)
Ready to Source Your Next CO2 Cartridge Order?
Whether you need a single sample to test compatibility or a full container of various CO2 cartridge sizes, our team can provide a custom quotation within 24 hours. We offer competitive FOB/CIF pricing, complete compliance documentation, and logistic support to any US or Canadian port.
Contact Zhuzhou XingYe Chemical
📞 Tel: +86 13787826843
📱 WhatsApp: 19313298383
📧 Email: boss@happywhip.com
🌐 Website: www.whipways.com
Add: Room 619-3, Henghe Industry And Trade Headquarters, No. 1099 Qingxia Road, Tongtangwan Street, Zhuzhou, Hunan, China
For a quick quote, please include your target cartridge size, approximate quantity, and destination port.
Disclaimer: All specifications, pricing, and lead times provided in this article are for general reference only. Final terms are subject to a written order confirmation. Product availability and compliance certifications may vary by batch. Always verify with our sales team before placing an order.
