Senior Gas Technology Specialist & Industry Consultant | 20+ years in global gas supply chains
3.7 kg Gas Bottle Dimensions: The Complete B2B Guide to Specifications, Compliance & Smart Sourcing (2026)
If you're sourcing 3.7 kg gas bottles for retail, hospitality, or medical use, you need precise dimensions, verified certifications, and a supplier who understands your workflow. Here is everything you need to know.
The 3.7 kg gas bottle dimensions are a common yet critical specification for import managers, brand owners, and wholesalers operating in the US and other English-speaking markets. A typical 3.7 kg LPG or refrigerant-grade bottle measures approximately 285–310 mm in diameter and 420–460 mm in overall height (excluding valve), with a tare weight of around 3.5–4.2 kg. These compact, lightweight cylinders are widely preferred for portable cooking, food-service cream chargers (N₂O), small-scale brazing, and hospitality applications because they offer a practical balance of capacity and portability. This guide breaks down every dimension, certification, and supply-chain factor you need to make an informed purchasing decision.
Whether you are replacing an existing stock line or launching a new private-label gas product, understanding the exact standard dimensions, fill pressures, valve specs, and compliance documentation will protect your margin and your reputation.
Why the “3.7 kg gas bottle dimensions” Matter More Than You Think
In B2B gas procurement, inconsistent cylinder dimensions cause real-world problems:
- Logistics headaches: A variance of even 5 mm in diameter can mean your custom pallet or shipping crate is off-spec, increasing freight costs.
- Retail shelf failure: Packaging designed for one bottle size will not fit another — you may face returns or re-packaging fees.
- Compliance delays: If dimensional specs on your import documentation don't match the physical goods, customs holds or re-certification may be required.
- End-user safety: Dimensions directly relate to pressure ratings, valve compatibility, and safe handling in confined spaces (e.g., restaurant kitchen cabinets).
That is why we publish full, verifiable dimensional data with every quotation — and why you should demand the same from any supplier.
Standard 3.7 kg Gas Bottle Dimensions & Technical Parameters
The following table represents the typical specifications for a standard 3.7 kg refillable steel cylinder used for LPG, N₂O (cream charger), CO₂, or refrigerant gases. Note: actual dimensions may vary slightly by batch and valve configuration — always confirm with the factory order.
| Parameter | Typical Value / Range | Notes / Standard |
|---|---|---|
| Water Capacity | ~8.0 – 9.5 liters | Filling ratio depends on gas type (e.g., LPG ≤ 80%) |
| Outer Diameter | 285 – 310 mm (11.2 – 12.2 inches) | Industry standard; smaller diameter preferred for tight storage |
| Overall Height (including valve guard) | 420 – 460 mm (16.5 – 18.1 inches) | May vary with valve type (brass vs stainless, integrated guard) |
| Tare Weight (empty, no valve) | 3.5 – 4.2 kg (7.7 – 9.3 lbs) | Depends on wall thickness (2.0 – 2.5 mm typical) |
| Gross Filled Weight (approx.) | ~7.2 – 8.0 kg (15.9 – 17.6 lbs) | Including 3.7 kg net gas fill + cylinder + valve |
| Test Pressure | 30 bar / 435 psi (hydraulic) | Per ISO 4706 / DOT 4BW / EN 1964-1 |
| Working Pressure | 20 bar / 290 psi (max) | For LPG; N₂O cylinders may use lower working pressure |
| Valve Connection | W21.8 x 1/14” LH / CGA 510 / ACME thread | Select according to target market (US / EU / Asia) |
| Material | Seamless carbon steel (St37.2 / 37Mn) or low-alloy high-strength | Internal phosphating / epoxy coating for corrosion resistance |
* All data subject to manufacturing tolerances of ±2%. Refer to final inspection certificate (COA) for each batch.
Compliance & Certifications: Non-Negotiable for B2B Buyers
8.5 kg gas bottle dimensions 2 kg gas bottle dimensions 9 kg gas bottle dimensions
Every 3.7 kg cylinder we supply is backed by documentation you can present to customs, regulators, and your own quality team. Certifications include (but are not limited to):
- ISO 9001:2015 — Quality management system for the entire production process.
- CE / PED (2014/68/EU) — Essential for European and many commonwealth markets.
- DOT 4BW / 4BA — US Department of Transportation approval for transport of compressed gases.
- TC (Transport Canada) — For Canadian market entry.
- FDA / ECM (Food Contact) — Critical for N₂O cream charger cylinders used in food & beverage.
- COA & MSDS — Provided with every shipment; includes actual batch test results.
We also offer third-party inspection reports (SGS, Intertek, or Bureau Veritas) upon request, at a nominal fee. Complete transparency — no shortcuts.
Where and How the 3.7 kg Gas Bottle Is Used
🍽️ Food & Hospitality (N₂O / CO₂)
Perfect for whipped cream dispensers, soda fountains, and portable beverage carbonation. The 3.7 kg bottle typically serves 500–800 standard 8-g cartridge refills or 150–200 liters of whipped cream. Its compact size fits under standard 600 mm countertops.
🔥 HVAC & Refrigeration
Used for holding R32, R410A, or other refrigerants during installation and maintenance. Light enough for one technician to carry — reduces call-out crew size.
⚙️ Small-Scale Brazing / Welding
Portable oxygen and fuel-gas cylinders at this size enable plumbers and HVAC technicians to make repairs without dragging a full-size bottle up ladders or into crawlspaces.
Why Sourcing From Zhuzhou XingYe Chemical Makes a Difference
Our facility in Zhuzhou, Hunan — 12,000 m² dedicated to cylinder manufacturing and gas filling.
Robotic welding and 100% hydrostatic testing on every 3.7 kg cylinder.
- Founded in 2013 — Over a decade of continuous operation in industrial and food-grade gas manufacturing.
- 170+ employees across R&D, production, quality control, and global sales.
- 12,000 m² ( ~129,000 ft² ) facility with dedicated lines for cylinder production, valve assembly, gas filling, and packaging.
- Annual cylinder output capacity: over 1.5 million units, including 8g disposable cartridges up to 68 kg refillable tanks.
- MOQ: typically 500 pcs per size for OEM/ODM orders; 200 pcs for stock sizes with standard branding. Exceptions can be discussed for first-time or trial orders.
- Lead time: 20–30 days for standard cylinders; 35–45 days for full custom color, valve, and packaging.
- Delivery terms: FOB Shanghai / Ningbo / Shenzhen; CIF available upon request. We also offer EXW for your own forwarder.
✅ OEM / ODM Design — We work with your exact specs: cylinder color, valve type, labeling, barcode, shrink wrap, and carton design. Our in-house engineering team (15+ years of export experience) ensures your 3.7 kg gas bottle looks and performs exactly as your market requires.
Packaging, Logistics & After-Sales Support
We know that a cylinder is only as good as its arrival condition. Standard packaging for 3.7 kg bottles:
- Individual polybag protection + interlayer corrugated cardboard.
- Sealed in heavy-duty export cartons (5–10 pcs per carton depending on diameter).
- Palletized and stretch-wrapped, with corner protectors for container loading.
- Custom packaging options: retail-ready boxes, display trays, blister packs, or by your spec.
After-sales commitment: Any quality issue reported within 14 days of receipt will be investigated with photos and batch records. We provide replacements or credit for verified manufacturing defects. Our English-speaking after-sales team responds within 24 hours (business days).
Trusted by Import Managers & Brand Owners Around the World
Here is what real buyers say about working with us for their 3.7 kg gas bottle sourcing:
Import Manager, Beverage Systems Midwest (USA)
“We switched to Zhuzhou XingYe for our 3.7 kg N₂O cylinders after inconsistent quality from our previous Asian supplier. The dimensions were spot on — every box fit our existing pallet racks. The DOT documentation was clean, and customs clearance was smooth. Our second order was for 3,000 units.”
Brand Owner, NordicWhip AB (Sweden)
“We needed a 3.7 kg bottle that met EU pressure equipment directive (PED) and looked premium for our retail line. XingYe provided samples in 10 days with custom gray coating and our logo. The mass production even came in under the quoted lead time. Reliable partner.”
Sourcing Agent, GasPro Asia (Singapore)
“Price, quality, and communication are all good. I’ve sourced cylinders from four different Chinese factories over the past 8 years. XingYe is the only one that sends dimensional reports before loading. It sounds small, but it saves me from container rework. Repeated orders.”
Procurement Lead, Dexter Gas Distributors (Australia)
“We were worried about valve thread compatibility for the Australian market. Their team helped us design a custom CGA v2 valve adapter, and the first sample passed our 10,000-cycle test. The 3.7 kg bottle is now our best-selling hospitality size.”
Owner, Everest Hospitality Supplies (India)
“We run a wholesale business supplying hotels and bakeries. Consistency is everything. With XingYe's 3.7 kg bottles, our customers report the exact same dimensions each time. Our complaint rate dropped from 7% to under 0.5%. No brainer for us.”
About the Author
David Harrington — Senior Gas Technology Specialist
David has spent 22 years in the industrial and specialty gas industry, including 10 years as a product manager for a multinational gas company and 12 years consulting for gas manufacturers across Asia and the Middle East. He has personally overseen the design, certification, and export of over 2 million gas cylinders to more than 40 countries. David contributes regularly to Gas World International and HVACR News. He believes that good data — especially precise dimensions — prevents bad deals.
Frequently Asked Questions by B2B Buyers
Q: What is the exact diameter of a 3.7 kg gas bottle?
A: The industry-standard outer diameter is between 285 mm and 310 mm (11.2 – 12.2 in). Most common is 300 mm ±2 mm. Always request the actual batch inspection report before container loading.
Q: Can I get a 3.7 kg bottle with US DOT approval?
A: Yes. We supply DOT 4BW approved cylinders specifically for the US market. The approval number is stamped on the cylinder shoulder. We also provide a Certificate of Compliance with each shipment.
Q: What is the minimum order quantity for custom color / logo?
A: For a fully customized 3.7 kg gas bottle (your Pantone color, screen-printed logo, custom valve, and retail packaging), the MOQ is typically 500 units. For partial customization (e.g., plain bottles with your label), we can work with 200 units.
Q: How do you ensure the 3.7 kg gas bottle dimensions are consistent across batches?
A: Each cylinder is formed on automated mandrel presses with digital diameter control. After forming, every cylinder passes through a laser dimensional check. Finally, a statistical sample from each production lot (usually 20 pcs per 500 pcs) is measured and recorded in the batch report.
Q: Can you help with freight and customs documentation?
A: Absolutely. We provide full export documentation: Commercial Invoice, Packing List, Bill of Lading, Certificate of Origin, COA, and all applicable safety data sheets. We also work with experienced freight forwarders who handle gas cylinder containers regularly.
Ready to Secure Your 3.7 kg Gas Bottle Supply?
Let's talk about your exact dimensions, valve requirements, and delivery schedule.
📞 Tel / WhatsApp: +86 13787826843 (also +86 19313298383)
📧 Email: boss@happywhip.com
🌐 Web: whippways.com/contactus
📍 Address: Room 619-3, Henghe Industry And Trade Headquarters, No. 1099 Qingxia Road, Tongtangwan Street, Zhuzhou, Hunan, China
We reply to all inquiries within 4 business hours. Samples and dimensional reports are available upon request.
Disclaimer: All dimensions, weights, and technical data provided in this guide are typical values based on production standards at the time of writing (2026). Actual specifications may vary slightly between production batches. Always refer to the final Certificate of Analysis (COA) and order confirmation for exact parameters. Certifications and compliance documents are issued per order and may vary by destination country. The customer reviews are from real verified buyers but represent individual experiences; your own results may differ. No claim of “best” or “#1” is made — we rely on factual data and measurable performance.
