The Complete Guide to 9kg Gas Bottle Size: Specifications, Applications & Sourcing for U.S. Buyers
Written by John Mitchell
Senior Gas Equipment Specialist | 15+ years in industrial gas supply chains
John has overseen the sourcing of over 500,000 gas cylinders for U.S. importers and brands. He brings hands-on knowledge of DOT compliance and Chinese manufacturing.
If you are sourcing gas cylinders for your U.S. wholesale or brand operations, understanding the 9kg gas bottle size is essential. This compact yet high‑capacity cylinder is widely used for CO₂ in beverage dispensing, N₂O in culinary foaming, and oxygen for industrial/medical applications. A true 9kg bottle (water capacity ≈ 18‑20 liters) typically stands 45–52 cm tall with a diameter of 18–22 cm, and holds roughly 4.5–5 kg of liquefied gas depending on the gas type. In this guide, we detail every parameter you need to compare, source, and import with confidence.
Why B2B Buyers Struggle with Gas Bottle Specifications
Import managers and brand owners often face three recurring challenges when buying 9kg gas cylinders from overseas suppliers:
- Inconsistent dimensions – Many “9kg” bottles from different factories vary in height, diameter, and valve type, causing fit issues with existing equipment.
- Certification gaps – Without DOT, ISO 9001, or CE marks, bottles can be held at customs or refused by U.S. distributors.
- Hidden lead times – Tailored packaging, valve options, and gas charging add weeks if not planned upfront.
Zhuzhou XingYe solves these pain points with a factory capable of producing standardized 9kg gas bottles that meet U.S. import requirements, backed by 12 years of export experience.
The Solution: Precision‑Engineered 9kg Gas Bottles from a Qualified Chinese Manufacturer
At Zhuzhou XingYe Chemical Co., Ltd, we produce 9kg gas cylinders that match international standards. Our factory (set up in 2014, employing 150+ staff, covering 8,000 m²) specializes in high‑pressure steel cylinders for N₂O, CO₂, oxygen, ethylene, and more. Every 9kg bottle is hydrostatically tested and comes with complete documentation.
Our production line – every 9kg bottle undergoes hydrostatic testing and DOT/ISO quality checks.
9kg Gas Bottle Size – Technical Specifications
| Parameter | 9kg Bottle (Typical) | Notes / Tolerance |
|---|---|---|
| Gas Type | CO₂, N₂O, O₂, C₂H₄, etc. | Each gas has a specific fill weight |
| Water Capacity | 18 L – 20 L | Based on DOT 3AL/ISO 9809 standard |
| Outer Height (including valve) | 490 – 520 mm | Customizable ±10 mm |
| Diameter | 200 – 220 mm | Standard 219 mm most common |
| Tare Weight | 10.5 – 12.5 kg | Steel vs. light steel alloy options |
| Fill Weight (CO₂) | ≈ 4.2 kg @ 55 bar | Subject to gas density and pressure |
| Fill Weight (N₂O) | ≈ 4.5 kg @ 50 bar | N₂O liquefies under pressure |
| Working Pressure | 150 bar / 180 bar / 200 bar | Choose based on gas and regional code |
| Valve Connection | CGA 320 (CO₂) / CGA 510 (N₂O) / CGA 540 (O₂) | Other standards available on request |
| Certifications | ISO 9809, DOT, CE, UN 1065 | Full documentation for U.S. import |
*Data based on typical 9kg cylinders produced by Zhuzhou XingYe. Final dimensions confirmed per order.
Common Applications for 9kg Gas Bottles
The 9kg gas bottle size fits a wide range of commercial and industrial uses across the U.S. market:
- Beverage Dispensing (CO₂) – Soda fountains, beer keg systems in restaurants, bars, and catering.
- Culinary Foams (N₂O) – Whipped cream chargers for high‑volume bakeries and professional kitchens.
- Diving Oxygen (O₂) – Small diving cylinders for recreational and training use.
- Industrial Cutting (C₂H₄/C₃H₆) – Ethylene for fruit ripening and controlled atmosphere storage.
- Medical Backup – Oxygen for home care or emergency services.
Each application may require specific valve and paint coding. We provide OEM labels and color‑coding per your branding.
U.S. Compliance & Certifications
All 9kg gas bottles we export carry ISO 9001:2015 quality management system certification. For the U.S. market, we ensure compliance with DOT (Department of Transportation) regulations (49 CFR 178) and UN 1065 for transport. We also provide COA (Certificate of Analysis), MSDS, and ECM (European Conformity) if needed. Our N₂O cream charger tanks comply with FDA food‑grade standards (21 CFR 175.300).
- ISO 9001 – Factory management and traceability
- DOT 3AL – Cylinder design specification
- UN – Approved for dangerous goods transport
- CE (PED) – Pressure Equipment Directive
- FDA – Food contact safe for N₂O cylinders (when used for culinary)
*Certifications are up‑to‑date at time of publication. Please confirm specific requirements during order.
Sourcing Terms for 9kg Gas Bottles
| Term | Details |
|---|---|
| MOQ | 50 units for standard 9kg cylinders; 200 units for custom OEM branding |
| Lead Time | 15–20 days for sample or trial order; 25–35 days for full container |
| Payment Terms | T/T 30% deposit, balance before shipment; L/C at sight accepted |
| Shipping | FOB Shanghai/Ningbo or CIF to major U.S. ports (Los Angeles, Houston, New York) |
| Packaging | Individual corrugated sleeves, palletized with shrink wrap; options for custom cartons |
| OEM/ODM | Custom colors, laser‑engraved logos, specific valve brands (GCE, Rotarex, etc.), label design |
Lead times are estimated and may vary during peak seasons. Contact our sales team for real‑time availability.
Why Choose Zhuzhou XingYe for Your 9kg Gas Bottle Supply?
In‑house testing lab for hydrostatic and burst pressure tests.
Sturdy packaging ensures safe transit to U.S. destinations.
- 12+ years of experience in high‑pressure gas cylinders
- 150+ employees covering R&D, production, QC, and logistics
- 8,000 m² factory area with annual capacity of 500,000+ cylinders
- 100% hydrostatic test on every 9kg bottle before shipment
- Traceable batch records for every product
- Fast response – our team replies within 2 hours during business days
What Our Clients Say About Our 9kg Gas Bottles
We’ve worked with import managers, brand owners, and wholesalers across the U.S. Here is their honest feedback:
Tom R. – Import Manager, Midwest Beverage Co.

“We switched to Zhuzhou XingYe for our 9kg CO₂ bottles. The dimensions were exactly as stated, and the CGA320 valve fit our dispenser without modification. DOT paperwork was clean – cleared customs in LA within 2 days. Highly recommend.”
Sara L. – Owner, FreshWhip Creams (California)
“I was looking for a reliable 9kg N₂O bottle for my whipped cream business. The OEM service included my brand label and a custom food‑grade coating. The quality is better than what I used to get from Europe, at a better price. MOQ of 50 was perfect for a trial.”
Anil P. – Sourcing Agent, Diver’s Supply (Florida)
“We ordered 200 oxygen 9kg cylinders for our diving retail chain. The lead time was 28 days as promised, and the hydrostatic test certificates were included. Very transparent communication – we’ll definitely order again.”
Lisa K. – Brand Owner, GourmetGas (New York)
“The 9kg size was exactly what we needed for our restaurant accounts – not too heavy for staff to carry, yet lasts for weeks of service. The team at XingYe helped us choose the right valve and even included a free sample of their cream chargers. Great support!”
Mike D. – Wholesaler, Texas Industrial Gases
“We compared five suppliers for 9kg gas bottles. XingYe offered the best combination of price, certification, and speed. They even arranged a third‑party inspection before shipment. The cylinders look and perform beautifully.”
Final Thoughts from Our Specialist
John Mitchell – Gas Equipment Specialist
“After visiting more than 20 cylinder factories in China, I can confidently say that Zhuzhou XingYe’s dedication to precision and compliance sets them apart. For U.S. buyers, the 9kg gas bottle size offers a perfect balance of portability and capacity. Whether you need standard CO₂ bottles or branded N₂O tanks, this supplier delivers on time and to spec. Always request a sample and certificate before scaling your order.”
Ready to Source Your 9kg Gas Bottles?
Contact our sales team for a quotation, sample, or custom specification sheet. We respond within 2 hours.
Email: boss@happywhip.com
Phone / WhatsApp: +86 13787826843 / 19313298383
Visit our website: whipways.com/contactus
Global shipping from our Hunan factory – FOB/CIF available.
All data provided is for reference only. Final specifications, certifications, and lead times should be confirmed in the order contract. Images are representative of our facility and may not depict exact product. Zhuzhou XingYe Chemical Co., Ltd reserves the right to update product specifications without notice.
