Liquid Nitrogen Gas Cylinder — liquid-withdrawal and gas cylinders explained
The term liquid nitrogen gas cylinder covers two different products, and REAL GAZ helps customers pick the right one. Liquid cylinders are insulated vessels that hold nitrogen at cryogenic temperature, while high-pressure steel cylinders hold nitrogen only as a compressed gas.
Choosing correctly affects safety, cost and how long a fill lasts, so we ask about your process before recommending a vessel.
Choosing correctly affects safety, cost and how long a fill lasts, so we ask about your process before recommending a vessel.
Vessels follow ISO 9809 for seamless steel gas cylinders, EN 1964 for cylinder design, TPED certification and ISO 21029 for insulated cryogenic containers, suitable for laboratory, workshop and production use.
A short rule of thumb helps. Choose a liquid cylinder when you need cold liquid or large volumes of gas from a portable unit; choose a 200 bar steel cylinder when you need a pressurised gas at steady flow with simple regulator equipment. Steel cylinders are available in typical sizes of 10, 20, 40 and 50 litres water capacity, and our team can match valve outlets to national connection standards in each market. We also supply pressure regulators, flexible hoses, tube connectors and cylinder trolleys, so that a single order can cover both the vessel and everything needed to connect it safely.
🏭 Where Nitrogen Cylinders Is Used
- ⚙️ Liquid withdrawal — insulated liquid cylinders with a withdrawal valve dispense LN₂ for cooling, freezing and filling small dewars;
- 🔬 Gas withdrawal — the same type of vessel can deliver nitrogen gas through an internal vaporiser at modest flow for purge duties;
- 🏥 High-pressure gas — steel cylinders at 200 bar supply nitrogen for laser cutting, tyre inflation and instrument carrier gas;
- 🚀 Pressure testing — technicians use nitrogen cylinders to leak-test refrigeration and gas pipework safely without flammable media.
💡 Why Choose REAL GAZ
- ✅ Honest product advice — we explain the difference between liquid and compressed nitrogen so you never pay for capacity you cannot use;
- 🧪 Cylinder size choice — portable vessels are available in compact and large formats suited to benches, vans and fixed installations;
- 🎯 Valve and regulator matching — outlets, fittings and regulators are specified for the pressure and flow of the chosen cylinder;
- 🔒 Safe transport — vessels are secured and labelled for road transport and supplied with clear loading and unloading guidance;
- 📄 Certificate of Analysis (CoA) — supplied with every order.
🔬 Quality Control & Safety
- periodic hydrostatic testing and visual inspection of steel cylinders;
- vacuum-integrity checks on insulated liquid cylinders;
- purity and dew-point analysis of the filled nitrogen;
- valve leak testing and pressure-relief device verification.
Cylinders and vessels comply with ADR / UN transport rules and relevant EN/ISO standards.
⚙️ Trusted Gas Solutions
Whether your enquiry is for a liquid nitrogen gas cylinder in its cryogenic or compressed form, REAL GAZ can supply, exchange and service it. Our team supports customers in Azerbaijan, Turkey, Georgia, Uzbekistan and the USA with suitable regulators, fittings and clear safety instructions.
REAL GAZ — The right nitrogen vessel for the job.