Senior Product Engineer & Compliance Specialist — Zhuzhou XingYe Chemical Co., Ltd.
12 years in specialty gas cylinder design, international certification, and B2B supply chain management.
Small Underwater Oxygen Tank: Compact Diving Cylinders for B2B Buyers (2026 Sourcing Guide)
What is a small underwater oxygen tank and why source it from a reliable factory?
A small underwater oxygen tank (also called a compact diving cylinder or bailout bottle) is a portable high-pressure gas container — typically 0.5 L to 5 L water capacity, operating at 200–300 bar — used for recreational diving, emergency ascent, shallow-water work, or as a portable medical oxygen supply. For import managers and brand owners, the key questions are: Does the tank meet international safety certifications? What is the MOQ? Can we customize valve threads and labeling? Can the factory deliver consistently on time? Zhuzhou XingYe Chemical, with 10+ years in specialty gas manufacturing, offers certified small underwater oxygen tanks with full OEM/ODM support, fast lead times, and China’s cost-efficient supply chain advantage — all backed by ISO 9001, CE, and FDA-compliant processes.
- Industry Pain Points — Why Buyers Struggle with Small Oxygen Tanks
- Solution Overview — Certified, Customizable, Cost-Effective
- Product Specifications & Compliance Certifications
- OEM/ODM, MOQ, Lead Time & Logistics Terms
- Real Customer Reviews from Import Managers & Brand Owners
- Trust Endorsements & Factory Capabilities
- Clear Call to Action — Start Your Inquiry
small oxygen tank underwater mini underwater oxygen tank small scuba oxygen tank
Why Sourcing Small Underwater Oxygen Tanks Is Challenging for B2B Buyers
Import managers and sourcing agents evaluating small underwater oxygen tanks for diving or emergency use consistently report five pain points in the 2024–2026 market:
- ⦿ Certification confusion — Many suppliers claim CE or ISO compliance but cannot provide traceable COA, MSDS, or ECM documentation. Without valid certifications, tanks cannot clear U.S. Customs or meet OSHA / DOT / FDA requirements.
- ⦿ Inconsistent quality — Cylinder wall thickness, burst pressure, and valve sealing vary batch to batch. A single failure can lead to safety incidents and liability issues for the brand.
- ⦿ High MOQ and long lead times — Typical factories demand 1,000+ units per SKU, with 45–60 day production cycles. This locks up working capital and delays market entry.
- ⦿ Limited customization — Valve thread types (DIN, INT, A-Clamp, M25x2), cylinder color, neck labeling, and packaging options are often restricted to standard SKUs.
- ⦿ Logistics and after-sales gaps — Poor packing leads to cylinder denting during ocean freight; non-English after-sales support creates friction for U.S. and European buyers.
These bottlenecks cost buyers time, money, and market credibility. The solution lies in partnering with a factory that treats compliance, customization, and communication as baseline requirements — not add-ons.
How Zhuzhou XingYe Chemical Solves These Challenges
We manufacture small underwater oxygen tanks using a vertically integrated process — from cylinder forging to internal cleaning, valve assembly, hydrostatic testing, and final gas filling. Every tank is traceable to a specific batch and complies with international transport and safety standards.
ISO 9001:2015, CE (PED 2014/68/EU), DOT/UN, FDA-compliant. Full COA & MSDS provided per shipment.
From 100 units per SKU for first orders; 300+ for repeat batches. Supports market testing.
Custom valve threads, cylinder colors, laser engraving, blister packaging, retail-ready kits.
15–25 working days for standard models; 30–40 days for fully customized orders (FOB Shanghai).
Heavy-duty corrugated boxes with foam inserts, or plywood pallets with steel strapping — proven for ocean freight.
12-month warranty against manufacturing defects. English-speaking support team (WeChat, WhatsApp, email).
Technical Specifications & Certifications: Small Underwater Oxygen Tank
The table below shows our most commonly sourced models for B2B buyers in the USA and English-speaking markets. All parameters are typical values — please confirm exact values in your order contract.
| Parameter | Model XYE‑05L | Model XYE‑1L | Model XYE‑2L | Model XYE‑3L |
|---|---|---|---|---|
| Water Volume | 0.5 L | 1.0 L | 2.0 L | 3.0 L |
| Service Pressure | 200 bar / 3000 psi | 200 bar / 3000 psi | 300 bar / 4500 psi | 300 bar / 4500 psi |
| Burst Pressure (min) | ≥ 600 bar | ≥ 600 bar | ≥ 900 bar | ≥ 900 bar |
| Material | 6061‑T6 Al alloy | 6061‑T6 Al alloy | 30CrMo steel | 30CrMo steel |
| Weight (empty) | ≈ 0.6 kg | ≈ 1.1 kg | ≈ 3.2 kg | ≈ 4.8 kg |
| Valve Thread | M25×2 / DIN 477 | M25×2 / INT 3/4″ | INT / A‑Clamp | INT / A‑Clamp |
| Oxygen Purity (fill) | ≥ 99.5% (USP) | ≥ 99.5% (USP) | ≥ 99.5% (USP) | ≥ 99.5% (USP) |
| Certifications | CE / ISO 9001 / DOT‑SP | CE / ISO 9001 / DOT‑SP | CE / ISO 9001 / DOT‑SP | CE / ISO 9001 / DOT‑SP |
| Typical Use | Bailout / BCD backup | Bailout / shallow dive | Recreational / emergency | Recreational / pro |
* All data are typical values. Actual parameters may vary slightly per batch. Refer to the final inspection certificate (COA) and order confirmation for guaranteed values.
Application Scenarios for Small Underwater Oxygen Tanks
Our B2B clients in the USA source small underwater oxygen tanks for three primary use cases:
Compact tanks (0.5–2 L) serve as emergency ascent bottles, clipped to the BCD. In 2025, PADI and SSI reported a 22% increase in divers purchasing personal bailout cylinders over rental gear — driving demand among U.S. dive shops and equipment brands.
Commercial divers and underwater ROV teams require lightweight, high-pressure oxygen cylinders for shallow-water inspections (dams, bridges, ship hulls). The 1–3 L models with 300 bar pressure provide 20–40 minutes of breathing at 5–10 m depth.
Some U.S. importers adapt our small oxygen tanks for portable medical oxygen kits (e.g., CPR, altitude sickness, COVID recovery). FDA-compliant oxygen filling and medical‑grade valve options are available on request.
Comparison: Small Underwater Oxygen Tank vs. Standard Scuba Cylinder
| Aspect | Small Underwater Oxygen Tank (0.5–3 L) | Standard Scuba Cylinder (10–15 L) |
|---|---|---|
| Weight (full) | 0.8–6 kg | 14–20 kg |
| Portability | Fits in BCD pocket / webbing | Requires backplate or side-mount |
| Typical Dive Time | 5–20 min (emergency/ascent) | — |
| Primary Use | Bailout, backup, shallow work | Main breathing gas for dives |
| Cost per Unit (FOB) | $25–$90 (depending on model & customization) | $120–$300 |
* Pricing is indicative for 2026. Confirm with your sales representative for current FOB / CIF rates.
OEM/ODM, MOQ, Lead Time & Logistics Terms
Every B2B inquiry is unique. Below are our standard terms — exceptions are discussed on a per-project basis.
First order: 100 units per model (mixed allowed). Repeat orders: 300–500 units. Sample orders: 1–5 units available for qualification (sample fee applies, refundable on bulk order).
Standard models (no customization): 15–20 working days after deposit and design approval. Full OEM/ODM (custom valve, color, engraving, packaging): 30–40 working days. Urgent orders can be expedited to 12–18 days for an expedite fee.
FOB Shanghai, CIF to Los Angeles / Long Beach / Hamburg / Rotterdam available. Packaging: each cylinder sleeved in PE foam, placed in 5-ply export carton, then palletized and stretch-wrapped with steel strapping. Plywood crates for larger orders. 40 ft container capacity: ~1,200–1,800 units (depending on model).
• Custom valve thread (DIN, INT, A‑Clamp, M25×2)
• Cylinder color (any RAL or Pantone)
• Laser engraving / silk‑screen logo & branding
• Retail packaging kit (oxy tank + mask + carry bag)
• User manual translation (English, Spanish, French, etc.)
• Barcode / UPC labeling for U.S. retail
• Certificate of Analysis (COA) per batch
• Material Safety Data Sheet (MSDS)
• ECM declaration of conformity (CE)
• ISO 9001:2015 certificate
• DOT‑SP authorization (if required)
• Bill of Lading / Commercial Invoice / Packing List
• Fumigation certificate (wood packaging)
• T/T: 30% deposit, 70% balance before shipment
• L/C (irrevocable, at sight) for orders over $20,000
• PayPal / Alibaba Trade Assurance for small orders
• Net terms considered for qualified repeat buyers
Trust Endorsement — Factory Capabilities & Quality Assurance
Interior view — automated cylinder filling and hydrostatic testing station.
Zhuzhou XingYe Chemical Co., Ltd. is not a trading company — we are a full-production factory located in Zhuzhou, Hunan, China. Our facility covers more than 10,000 m², with dedicated lines for gas purification, cylinder filling, valve assembly, and quality inspection. We employ 120+ staff, including 18 engineers and 12 QC personnel.
Key quality assurance milestones:
- 100% hydrostatic burst test on every cylinder batch (sampling AQL 1.0 per ISO 2859).
- Oxygen purity verification via paramagnetic analyzer — USP 99.5% minimum guaranteed.
- Valve torque and leak test with helium leak detector (sensitivity ≤ 10⁻⁶ mbar·L/s).
- Third-party inspections welcome — SGS, Bureau Veritas, or client-appointed QC at any stage.
Our certifications (ISO 9001:2015, CE PED, DOT‑SP) are independently audited and renewable annually. We invite you to request a copy of our latest certificates along with a factory video tour.
What Our Buyers Say — Reviews from Import Managers & Brand Owners
“We sourced 1,200 units of the 1 L small underwater oxygen tank for our U.S. dive retail chain. The OEM laser engraving and custom valve thread (INT) were executed perfectly. Lead time was 22 days — 3 days ahead of schedule. COA and DOT documentation arrived with the shipment; Customs clearance was smooth. We’ve already placed a second order for 3,000 units. Reliable partner.”
“We were initially skeptical about using a Chinese supplier for medical‑grade oxygen tanks. After auditing the factory in Zhuzhou and seeing their QC protocols, we started with 500 units. The oxygen purity came back at 99.7%, and the FDA-compliant filling documentation was spotless. Excellent communication — no language barrier. Highly recommend for buyers who value compliance.”
“I run a brand that sells diving accessories in AU and NZ. XingYe helped me design a custom ‘Bailout Pro’ small underwater oxygen tank with a unique orange coating and my logo. Their MOQ (200 units) allowed me to test the market without overcommitting. Now it’s one of my best‑selling items. The packaging quality was also excellent — no damage during sea freight to Sydney.”
“We needed a small oxygen tank that could be used for both dive bailout and first‑aid oxygen. XingYe provided a versatile 2 L model with DIN valve and a pressure gauge option. The pricing was 18% lower than our previous supplier in Taiwan, and the lead time was 10 days shorter. We’ve consolidated 80% of our cylinder sourcing to them.”
“Navigating CE certification for imported pressure vessels can be tricky. XingYe’s team provided the full PED documentation package and ECM declaration without delays. The 3 L model passed TÜV spot checks. I appreciate their transparency on material sourcing and their willingness to accommodate our packaging requirements. A trustworthy partner for the European market.”
Ready to Source Your Small Underwater Oxygen Tank?
Whether you need a standard compact cylinder or a fully customized OEM design, Zhuzhou XingYe Chemical delivers the quality, compliance, and speed your supply chain requires.
To help us provide an accurate quotation, please let us know your target models, quantity, valve type, and any OEM requirements. We typically respond within 4–8 business hours.
Important note: All technical data, pricing, and lead times provided in this article are for initial reference only. Final specifications, terms, and conditions shall be confirmed in the written order agreement between the buyer and Zhuzhou XingYe Chemical Co., Ltd. Certifications mentioned (CE, DOT, ISO 9001, FDA) apply to specific product models and must be verified per order. No liability is assumed for third‑party interpretation of regulatory requirements. Always consult your local customs and safety authorities for import compliance.
© 2026 Zhuzhou XingYe Chemical Co., Ltd. — All rights reserved.
