Argon Storage Dewar
Multi-layer vacuum insulation for low evaporation
DSW supplies and exports liquid argon bottles (cryogenic argon dewars) designed for the safe storage and reliable transport of low-temperature liquefied gases such as liquid argon (LAr), liquid oxygen (LO₂), liquid nitrogen (LN₂), and LNG.
Each argon dewar bottle is manufactured from premium stainless steel and built to strict international safety standards. The result is a durable, low-evaporation liquid argon dewar that delivers stable performance and a long service life for industrial, medical, and laboratory use.
Key Features
Multi-Layer Vacuum Insulation
State-of-the-art multi-layer insulation significantly reduces heat ingress, lowering evaporation and ensuring thermal stability.
Stable Continuous Gas Supply
Every gas dewar is equipped with an integrated vaporiser capable of providing a constant output of up to 10 Nm³/h.
International Standard Valve System
High-reliability valves comply with global standards (CGA/DIN/GB) and may be fitted with premium, imported Rego® USA valves.
Shock-Resistant Structure
A reinforced base and damping ring protect the inner tank, making the argon storage dewar suitable for frequent handling and transportation.
Digital Liquid Level Gauge (Optional)
High-accuracy monitoring with percentage display for precise control of contents.
Multiple Argon Dewar Sizes
Capacity options from 80L to 1000L to suit varied consumption and operational requirements.
Argon Dewar Sizes
| Specification | DSW450-175-1.37 | DSW450-175-2.3 | DSW450-195-1.37 | DSW450-195-2.3 | DSW450-210-1.37 | DSW450-210-2.3 | DSW450-210-3.0 |
|---|---|---|---|---|---|---|---|
| Nominal Volume (L) | 175 | 175 | 195 | 195 | 210 | 210 | 210 |
| Effective Capacity (L) | 160 | 160 | 177 | 177 | 191 | 191 | 191 |
| Dimensions (Diameter × Height, mm) | Φ510 × 1557 | Φ510 × 1557 | Φ510 × 1673 | Φ510 × 1673 | Φ510 × 1767 | Φ510 × 1673 | Φ510 × 1673 |
| Working Pressure (MPa) | 1.37 | 2.3 | 1.37 | 2.3 | 1.37 | 2.3 | 3.0 |
| Safety Valve Set Pressure (MPa) | 1.59 | 2.41 | 1.59 | 2.41 | 1.59 | 2.41 | 3.45 |
| Burst Disc Pressure (MPa) | 2.41 | 3.60 | 2.41 | 3.60 | 2.41 | 3.60 | 5.17 |
| Evaporation Rate (%/day) | <2.1 | <2.1 | <2.0 | <2.0 | <2.0 | <2.0 | <2.0 |
| Empty Weight (kg) | ≈130 | ≈142 | ≈133 | ≈152 | ≈131 | ≈165 | ≈165 |
| Max Filling Weight – LO₂ (kg) | ≈182 | ≈182 | ≈202 | ≈202 | ≈218 | ≈218 | ≈218 |
| Max Filling Weight – LN₂ (kg) | ≈129 | ≈129 | ≈142 | ≈142 | ≈154 | ≈154 | ≈154 |
| Max Filling Weight – LAr (kg) | ≈224 | ≈224 | ≈248 | ≈248 | ≈268 | ≈268 | ≈268 |
| Max Filling Weight – LNG (kg) | ≈68 | ≈68 | ≈75 | ≈75 | ≈75 | ≈75 | ≈75 |
| Max Filling Weight – LCO₂ (kg) | — | ≈188 | — | ≈209 | — | ≈225 | ≈225 |
| Level Gauge | Floating Level | Floating Level | Floating Level | Floating Level | Floating Level | Floating Level | Floating Level |
| Surface Treatment | Polished | Polished | Polished | Polished | Polished | Polished | Polished |
| Base Type | Rubber Base | Rubber Base | Rubber Base | Rubber Base | Rubber Base | Rubber Base | Rubber Base |

Industry Applications
Our liquid argon dewar tanks are widely used in:
- Metal cutting, argon-arc welding and industrial fabrication
- Medical and laboratory supply of oxygen, nitrogen, and argon
- Pharmaceutical and biotechnology processing
- Industrial gas distribution and LNG handling
- Food freezing, packaging, and preservation
- Electronics, chips, and semiconductor fabrication
Quality, Materials & Safety Excellence
- Premium S30408 stainless steel, chemically polished and degreased
- Anti-shock rubber base protection on all dewar argon cylinders
- 25-layer vacuum insulation ensures superior thermal retention
- Dual protection rings for vaporiser and pipeline safety
- Heavy-duty bolted support frame for the 450L & 410L argon dewar tank range




















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