175L High Performance Cryogenic Gas Dewar Cryogen Storage Container Liquid Argon Bottle
Products Description
The 175L Cryogenic Dewar Tank is a high-vacuum insulated pressure vessel engineered for the storage and transport of liquid nitrogen (LN₂), oxygen (LOX), argon (LAr), carbon dioxide (LCO₂), and LNG. Constructed from high-strength aluminum alloy or stainless steel, it features multi-layer insulation (MLI) and high-vacuum jacket technology with a static evaporation rate as low as 0.87–1.0 L/day, delivering reliable long-term performance at temperatures approaching -196°C for biobanking, industrial gas distribution, and laser cutting assist-gas applications.
Product Specifications
| Specifications | DPL450-175MP | DPL450-175HP | DPL450-175VHP |
|---|---|---|---|
| Geometric Volume | 175 | 175 | 175 |
| Effective Volume | 157.5 | 157.5 | 157.5 |
| D×H(mm)Size | Φ508×1496 | Φ508×1500 | Φ508×1500 |
| Working Pressure(MPa) | 1.37 | 2.05 | 2.88 |
| Set Pressure of Safety Valve(MPa) | 1.59 | 2.41 | 3.45 |
| Bursting Disc / Assistant Safety Valve(MPa) | 2.6 / 2.41 | 3.6 | 5.17 |
| Evaporation Rate(liquid nitrogen) | ≤2.1% | ≤2.1% | ≤2.1% |
| Empty Weight(kg) | ~117 | ~135 | ~156 |
| Maximum filling weight :Liquid Oxygen (kg) | ~179 | ~179 | ~179 |
| Maximum filling weight :Liquid Nitrogen (kg) | ~127 | ~127 | ~127 |
| Maximum filling weight :Liquid Argon (kg) | ~220 | ~220 | ~220 |
| Maximum filling weight :LNG (kg) | ~67 | / | / |
| Maximum filling weight :Liquid CO ₂(kg) | / | ~163 | ~163 |
| Level Gauge | Float/Capacitance | Float/Capacitance | Float/Capacitance |
| Base Style | Stainless Steel-Rubber | Stainless Steel-Rubber | Stainless Steel-Rubber |
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Product Features
✅High vacuum multi-layer insulation, low evaporation loss
✅Double wall SS304 tank, durable & corrosion resistant
✅Self-pressurizing system, gas output without external power
✅Dual safety valve + burst disc overpressure protection
✅Damping ring, suitable for land & sea shipment
✅CGA standard valve manifold, easy maintenance
Packaging & Shipping
1.cryogenic dewar Tank body wrapped with PE protective film to prevent scratch on stainless steel surface;
2.Valves & pressure gauges separately wrapped with bubble film against impact;
3.Optional metal transport frame (highly recommended for sea freight), fix tank upright to avoid tipping;
4.Wooden block reinforcement at bottom for container sea & land transport;
5.Shipping mark & warning labels: cryogenic pressure vessel, upright sign;
6.Keep tank upright during loading, horizontal or inverted transport forbidden to prevent vacuum failure;
7.Packing photos & packing video available before shipment for customer confirmation.
How to Select cryogenic dewar?
1.Confirm medium: LOX / LIN / LAr / LCO2, different valve assembly for different cryogenic liquid;
2.Select working pressure: standard 1.4MPa ,2.0MPa or high pressure 2.3MPa version;
3.Calculate daily gas consumption, match built-in vaporizer max output 9.2Nm³/h;
4.Destination country: TPED mandatory for EU market, PED/CE for other regions;
5.Working environment: indoor stationary supply or outdoor mobile transport;
6.Optional extras: OEM nameplate, customized valve connection, metal transport frame.
Application Scenarios
✅ Industrial gas station: on-site storage & continuous supply of LOX, LIN, LAr
✅ Laser cutting, metal welding, metallurgy heat treatment
✅ Scientific laboratory, material cryogenic test & cooling
✅ Hospital centralized oxygen supply, medical emergency oxygen system
✅ Food quick-freezing & cold chain processing
✅ Semiconductor & photovoltaic cryogenic process
✅ Mobile cryogenic gas source for mining & construction site
✅ LCO2 storage & dry ice production
After Sales Service
Warranty policy: 12 months free warranty for the whole machine, 3 years warranty for vacuum performance (free repair if the vacuum degree is not up to standard in the case of non-man-made damage). Supplies of fittings are available after the warranty period.
Technical support: Bilingual operation manual, installation video, safety operation specification documents are provided with the goods. 24-hour mail/instant messaging technology response.
Training service: The first customer can apply for video one-on-one operation training to ensure proficiency in filling, taking, and daily maintenance processes.
Supply of spare parts: Safety valves, flaps, neck tube seals and other wearing parts are in stock, and can be shipped quickly.
why choose us?
1.Direct manufacturer with 24 years cryogenic pressure vessel manufacturing experience, no middleman markup;
2.Own workshop, traceable raw materials, OEM nameplate & pipeline customization available;
3.FAT factory acceptance test available, customer witness inspection on request;
4.Professional export document team, quickly prepare CIQ, material certificate, test report & shipping documents;
5.Global technical support, remote video guidance for commissioning & troubleshooting;
6.Spare parts in stock, fast delivery for valves, pressure gauges & safety relief components.
Common Troubleshooting about dewar cylinder
| Symptom | Possible Cause | Solution |
|---|---|---|
| Excessive frosting or white vapor emission from the upper tank section | Vacuum insulation failure | Contact the manufacturer to return the unit for vacuum integrity testing; do not attempt repairs yourself |
| Liquid nitrogen consumption accelerates significantly | Poor neck seal / Prolonged lid-open operation / Vacuum degradation | Check if the neck plug is properly seated; reduce the frequency of opening the lid; if frosting at the neck persists, return the unit to the factory for leak testing. |
| Safety valve repeatedly opening (pressure-type) | Overfilling / Pressure-building valve left open / Excessive ambient temperature | Vent to normal liquid level; check if the pressure-building valve was accidentally opened; move to a cool location |
| Inaccurate liquid level reading | Take reading after the unit has been allowed to stand still; | For pressure-type units, the level gauge must be read while the tank is in a vertical position. |
FAQ
Q: Do you provide CE or ISO certification for the 175L cryogenic storage tank?
A: Yes. Our products carry ISO9001 and CE certification. Third-party inspection reports (mechanical test, video inspection) are available upon request.
Q: How do I choose between a pressure dewar and a non-pressurized dewar?
A: If you need continuous flow of liquid or gas to equipment (laser cutter, gas distribution line), choose the stainless steel pressure type. For static sample storage or manual dispensing, the aluminum non-pressurized type is more economical.
Q: Can this 175L liquid nitrogen tank be used for transporting liquid oxygen (LOX) or LNG?
A: Yes. The stainless steel pressure model is compatible with LN₂, LOX, LAr, LCO₂, and LNG. For LNG service, double safety valves are recommended.
Q: How long does the liquid nitrogen last in a 175L cryogenic dewar?
A: With a static evaporation rate of 0.87–0.9 L/day, the holding time exceeds 180 days (approximately 6 months) under proper filling and storage conditions.
Q: What is the lead time for a 175L liquid nitrogen dewar tank order?
A: For 1–10 units: 7–15 days. For OEM/custom orders: 20–30 days. Sample evaluation units can ship within 3–5 days.
Q: How do I maintain the vacuum insulation of the 175L liquid nitrogen dewar?
A: No routine vacuum maintenance is required. The vacuum jacket and adsorbent are sealed at the factory and designed for 5+ years of service. Visual inspect for frost formation near the neck or vacuum port as a sign of vacuum degradation.
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