175L Portable Cryogenic Gas Dewar Cryogen Liquid Storage Tank Liquid CO2 Vessel
Products Description
DPL-175 175L cryogenic gas dewar is a double-wall vacuum insulated pressure vessel for storage & transportation of LOX, LIN, LAr and LCO₂. Adopting austenitic stainless steel inner tank and multi-layer high vacuum insulation, it features ultra-low static evaporation rate. It integrates storage, vaporization and gas supply, replacing traditional high-pressure cylinder bundles for on-site industrial gas supply. Every vessel passes hydrostatic test, air tightness test and vacuum inspection one by one, manufactured in compliance with pressure vessel codes.
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 |
more details
Product Features
✅ All-in-one gas supply: built-in vaporizer, no extra vaporizer required, connect pipeline and start gas supply
✅ Low-loss vacuum insulation, reduce cryogen consumption and gas purchasing cost
✅ Multi safety valve manifold, automatic overpressure relief for safer workshop operation
✅ Vertical compact design saves much floor space compared with bundles of high-pressure cylinders
✅ Visible liquid level gauge to monitor remaining cryogen and arrange refilling in advance
✅ Simple operation, on-site workers can operate independently after basic training, low maintenance workload
Packaging & Shipping
Packing: 175L cryogenic gas dewar cleaned & dried before shipment, valve cap protection, reinforced steel wood frame with waterproof film to avoid transport damage.
Transport: Empty vessel only, upright transport, horizontal placement forbidden. Sea & truck transport, FCL/LCL available. Safety manual and certificates attached.
How to Select cryogenic dewar?
1.Calculate daily gas consumption to estimate continuous supply duration;
2.Site condition: stationary indoor use choose1.4MPa; mobile transfer choose high pressure version;
3.Medium: LOX/LIN for laser cutting; LIN for lab research;
4.Safety certificate: domestic pressure vessel certificate; TPED/CE for EU export.
Application Scenarios
1.Metal working: on-site LOX / LIN supply for laser cutting, welding, plasma cutting
2.Metallurgy: heat treatment & quenching shielding gas for steel industry
3.Laboratory & research: cryogenic material test & LN2 experiment for universities & institutes
4.Medical industry: medical liquid oxygen supply, biological sample cryo-preservation
5.Gas distributors: cryogenic gas filling station, mobile gas supply & gas delivery
6.Food freezing, cold chain, powder metallurgy, 3D printing inert shielding gas supply
After Sales Service
1.Warranty: 12 months warranty against manufacturing defects. Consumable parts such as pressure gauge & valve seal have separate warranty.
2.Technical support: 24/7 online support, remote troubleshooting via email & video call.
3.Spare parts: Long-term supply of full valve manifold spare parts for 175L cryogenic gas dewar.
4.Vacuum maintenance: Vacuum re-pumping service available when vacuum performance drops.
5.Document service: Reissue certificates, test reports & operation manual anytime.
6.Large project: On-site commissioning & operation training available at buyer's cost.
why choose us?
1.Professional cryogenic equipment manufacturer familiar with on-site gas supply pain points, free gas solution evaluation
2.Provide full safety operation training documents for workshop management
3.Remote technical support for installation & commissioning
4.Full spare parts of valves and gauges available to ensure long-time stable operation
5.Piping layout suggestion according to customer workshop layout
Common Troubleshooting about Dewar Flask
| Symptom | Root Cause | Solution |
|---|---|---|
| Heavy frost on outer shell, high evaporation | Vacuum loss | Stop filling, return factory for vacuum re-evacuation |
| Pressure rising continuously, safety valve pops frequently | Faulty pressure building valve / high ambient temp | Close pressurizing valve, cool down, inspect manifold |
| Insufficient gas output | Pipeline blockage / low regulator setting | Clean pipeline, reset pressure regulator |
| No reading on pressure gauge | Broken gauge / valve closed | Replace gauge, check valve status |
| Frost & leakage at valve joint | Aging gasket | Depressurize tank, replace gasket |
FAQ
Q: How much gas can one 175L liquid oxygen dewar provide?
A: 175L LOX can vaporize to around 140Nm³ gaseous oxygen, much higher than high-pressure cylinders.
Q: Do I need extra vaporizer for 175L cryogenic dewar?
A: No, built-in vaporizer inside 175L cryogenic gas dewar, ready for gas output directly.
Q: What gas can 175L cryogenic liquid cylinder supply?
A: Liquid oxygen, liquid nitrogen, liquid argon, liquid CO₂.
Q: How often do I need to refill the 175L dewar?
A: Depends on daily consumption, our engineer can calculate refill cycle for your workshop.
Q: Is it safe to install 175L cryogenic gas dewar inside workshop?
A: Yes, follow safety operation manual, multi overpressure protection system built in.
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