Top Quality Cryogenic Grade 210L Liquid Oxygen Dewar Vessel for Steel Plant & Heavy Industry
Products Description
210L Cryogenic Storage Dewar, vertical vacuum-insulated cryogenic liquid cylinder adopting MLI multi-layer insulation technology, for static storage & self-pressurized supply of cryogenic liquid at -196℃ (LN2, LO2, LAr, LCO2). Double 304 stainless steel pressure vessel, independent vacuum jacket blocks heat conduction, convection and radiation to minimize boil-off loss. Integrated self-pressurization coil, pressure safety assembly and float liquid level monitor, to provide stable cryogenic medium supply for laboratories, cryo material testing, precision manufacturing and research institutes. Designed per pressure vessel codes, full NDT inspection, CE/ISO/TPED/DOT available, third-party performance test acceptable.
Product Specification
| Specification | DPL450-21M | DPL450-21HP | DPL450-Z1VHP | DPL450-236MP |
| Geometric Volume (L) | 210 | 210 | 210 | 236 |
| Effective Volume (L) | 189 | 189 | 189 | 212.4 |
| Size(D×H)mm | 中508×1716 | 中508×1720 | 中508×1720 | 中508×1867 |
| Working Pressure(MPa) | 1.37 | 2.05 | 2.88 | 1.37 |
| Set pressure of safety value(MPa) | 1.59 | 2.41 | 3.45 | 1.59 |
| Set pressure of bursting discset/ Set pressure of assistant safety value(MPa) |
2.6/2.41 | 3.6 | 5.17 | 2.6/2.41 |
| Evaporation rate(liquid nitrogen) | ≤2.0% | ≤2.0% | ≤2.0% | ≤1.97% |
| Empty weight(kg) | ~131 | ~148 | ~173 | ~141 |
| Maximum filling weight:Liquid oxygen (kg) | ~215 | ~215 | ~215 | ~242 |
| Maximum filling weight:Liquid nitrogen (kg) | ~153 | ~153 | ~153 | ~172 |
| Maximum filling weight:Liquid argon (kg) | ~264 | ~264 | ~264 | ~297 |
| Maximum filling weight:LNG(kg) | ~80 | / | / | ~90 |
| Maximum filling weight:Liquid carbon dioxide (kg) | / | ~195 | ~195 | / |
| Level gauge | Float type/ Capacitance |
Float type/ Capacitance |
Float type/ Capacitance |
Float type/ Capacitance |
| The base style | Stainless steel- rubber bas |
Stainless steel- rubber bas |
Stainless steel- rubber bas |
Stainless steel- rubber bas |
Notice
Cryogenic liquid cylinders have an inner container and an outer container with an insulated vacuum space between them. Any abuse(dents, dropping.tip-over, etc.)can affect the integrity of the containers insulation system.DPL series containers will allow you to use a hand truck or hoist to handle these loads properly.Do not attempt to move these cylinders by any other means. While moving the cylinder, the following precautions should be observed
1.Never lay the cylinder on its side. Always ship, operate and store the unit in a vertical or upright position.
2.When loading or unloading the container from a truck,use a hand truck, lift gate, crane or parallel loading dock.Never attempt to manually lift the unit.
3.To move the container over rough surfaces, or to lift the container, attach an appropri-ated sling to the lifting points cut into the welded support posts, and use a portable lifting device that will handle the weight of the container and its contente
Features
✅ Double stainless steel vacuum insulation, low boil-off, save cryogenic gas cost
✅ Integrated valve manifold, self-pressurized gas supply, simple operation
✅ Safety valve + bursting disc dual safety protection
✅ Float level gauge for easy liquid volume reading
✅ Anti-collision base ring, anti-damage during lifting & handling
✅ International standard port for filling & piping
✅ OEM available, custom brand nameplate
Why Choose Our Cryogenic Liquid Cylinder?
1.Stable low boil-off rate, performance match global competitors with competitive price.
2.304 stainless steel tank, auto welding & NDT to prevent vacuum leakage.
3.Complete valve assembly, ready to use once received.
4.Multi-medium compatible for different cryogenic liquids.
Application Scenarios
✅ Gas distributor stock & resale
✅ Factory, laser cutting, welding, metallurgy
✅ Laboratory & biological sample preservation
✅ Marine, mining & construction site gas supply
✅ Food quick-freezing, chemical & electronics cryogenic application
Packing & Shipping
Export packing: fumigated wooden box / heavy steel frame package, steel frame recommended for sea anti-shock. Valves packed separately with foam, tank wrapped anti-rust film. Full shipping mark & hazard label. LCL & FCL available, ship from Shanghai, Ningbo, Qingdao. Loading photos available.
After Sales Service
1.12-month full machine warranty, 5-year vacuum jacket warranty.
2.Full English technical documents provided, remote diagnosis, operation training & safety briefing. Support drawing revision guidance, spare parts global courier. Free spare parts for non-artificial failure within warranty. Annual maintenance technical plan available, paid on-site service for overseas projects.
Troubleshooting Guide
| Symptom | Possible Cause | Solution |
|---|---|---|
| Extensive frosting or condensation of the shell | Decrease or failure of vacuum | Immediately discontinue use, transfer contents, return to factory to test vacuum system |
| The daily evaporation rate is obviously increased | Vacuum degradation, valve leakage, sealing ring aging | Leak detection, replacement of seals, re-vacuum if necessary |
| relief valve take-off | Abnormal pressure rise, overfilling, carburetor blockage | Check the filling capacity (≤ 90%), check the carburetor patency, and confirm the safety valve setting value |
| insufficient output gas flow | The carburetor is frozen and blocked, the liquid level is too low, and the valve opening is not enough | Stop use and wait for the carburetor to warm up, replenish liquid nitrogen, check the opening of the valve |
| Level gauge reading abnormal | Stagnation of float and deformation of connecting rod | Tapping the level gauge catheter with a wooden stick to restore the float, replacing the level gauge if necessary; |
| valve handwheel difficult to turn | Low temperature icing and valve stem lubrication failure | Thaw valve stem with warm water (not exceeding 40 °C). Do not use open flame or knock |
|
Unusually high pressure of tank body after transportation |
Liquid nitrogen sloshing and excessive temperature during transportation |
Stand for 24 hours to observe, naturally relieve pressure, and confirm the normal operation of the safety valve |
Factory & Service Advantages
1.In-house cryogenic pressure vessel design team, support system integration solution.
2.Full type test capability: hydrostatic, air tightness, vacuum, burst test.
3.Accept third-party lab performance sampling, English test report available.
4.Complete technical document: 3D drawing, P&ID, operation manual, calculation sheet, material certificate.
5.Global remote technical support, assist site commissioning & safety training.
Customer Visit
Engineer & procurement team welcome for factory audit. Arrange production tour, hydro/vacuum witness test, prototype performance demonstration & face-to-face technical review. Interpreter & pick-up service by appointment. Certificate package, project references & test report available in advance.
FAQ
Q: What is the function of bursting disc in cryogenic storage dewar?
A: Bursting disc is secondary overpressure protection, activate when safety valve fails.
Q: How long is the pressure holding test?
A: Hydrostatic test & air tightness test follow pressure vessel code standard holding time.
Q: Can the dewar be repaired if vacuum fails?
A: Vacuum leakage inside jacket cannot be repaired; need factory re-evaluation.
Q: Is the cryogenic liquid cylinder suitable for LCO2?
A: Yes, suitable for LCO2 storage, need confirm working pressure
Q: Do you supply operation safety manual in English?
A: Yes, English manual is included in document package.
Q: What spare parts are recommended for regular maintenance?
A: Seal gaskets, pressure gauge, safety valve spare parts.
Q: What is the difference between cryogenic storage dewar and micro bulk tank?
A: 210L cryogenic dewar is portable vertical cylinder; micro bulk tank is larger stationary tank.
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