499L Cryogenic Dewar Flask Mobile LN2 Tank Stainless Steel Insulated Vessel for Hospitals
Products Description
499L Cryogenic Dewar Flask (Cryogenic Dewar/Liquid Nitrogen Tank) is a high-capacity, high-vacuum multi-layer insulated cryogenic liquid storage and transportation container designed for liquid nitrogen (LN ₂), liquid oxygen (LOX), liquid argon (LAr), liquefied natural gas (LNG) and liquid carbon dioxide (LCO ₂) for industrial-grade storage and road transportation. This product adopts double-layer stainless steel structure, interlayer vacuum and winding multi-layer thermal insulation material, the daily evaporation rate is as low as ≤ 1.7%, and it can maintain the low temperature of liquid nitrogen for several weeks in a full liquid state. It is a choice for biological sample banks, hospitals, scientific research institutions and industrial gas suppliers to achieve safe storage and efficient transfer of large-scale cryogenic liquids.
Product Specification
|
Specifications |
Product model |
|
|
DPL650-499-1.44 |
DPL650-499-2.5 |
|
|
volume(L) |
499 | 499 |
|
Effective volume(L) |
449 | 449 |
|
Size(mm) |
2045×770×1030 |
2045×770×1030 |
|
Working Pressure(MPa) |
1.44 |
2.5 |
|
Set pressure of main safety value(MPa) |
1.72 |
2.76 |
|
Set pressure of bursting discset(MPa) |
2.41 |
4.14 |
|
Evaporation rate (Liquid nitrogen) |
≤1.7% |
≤1.7% |
|
Empty weight(kg) |
338 | 402 |
|
Maximum filling weight:Liquid oxygen(kg) |
511 |
511 |
|
Maximum filling weight:Liquid nitrogen(kg) |
364 | 364 |
|
Maximum filling weight:Liquid argon(kg) |
629 | 629 |
|
Maximum filling weight:LNG(kg) |
191 |
--- |
|
Maximum filling weight:LCO2(kg) |
--- | 487 |
|
Level gauge |
Capacitance |
|
|
The base style |
Frame style |
|
more details
Product Features
✅ Double-layer 304 stainless steel inner tank, high vacuum multi-layer winding insulation, vacuum service life ≥5 years
✅ Multi-safety protection: safety relief valve + burst disc dual overpressure protection
✅ Integrated valve manifold, pressure gauge & level gauge to monitor pressure & liquid level
✅ Reinforced steel protective frame, shock & collision resistant for highway transport
✅ 100% hydrostatic test & helium leak detection before delivery, zero leakage
✅ Low boil-off rate, reduce cryogenic liquid loss & operation cost
✅ Optional built-in vaporizer to output ambient temperature gas directly
Product Advantages
1.Mature vacuum insulation technology, lower daily boil-off than standard competitors, longer storage period.
2.Cryogenic grade 304 inner tank, anti-low temperature brittle fracture & fatigue resistance.
3.Well-known brand safety valves, stable performance & spare parts available globally.
4.Full traceability for pressure vessel, unique stamp number for each unit, complete inspection documents.
5.Integrated horizontal frame design, easy for forklift, hoisting & trailer transport.
Application & Operation Notes
Industrial gas station, laser cutting, metal welding & heat treatment, food quick-freezing, biomedical cryopreservation, ship supporting, mining, semiconductor cooling, laboratory, chemical cryogenic reaction, cold chain project.
Notes
1.Operators must receive professional training. Wear cryo-gloves & goggles to avoid frostbite.
2.Never overfill 499L cryogenic dewar flask. Filling volume shall not exceed rated capacity.
3.Keep well ventilated, far from fire & heat source. Do not vent large amount cryogenic gas in closed room.
4.Regular inspection for safety valve, burst disc and pressure gauge, periodic calibration per pressure vessel regulation.
5.Avoid tank impact & drop. Secure firmly during transport, prevent violent vibration.
6.Stop operation and contact manufacturer if abnormal frosting or continuous fast pressure rise.
Packing & Shipping
Packing: Whole tank wrapped by PE protective film; valve manifold fitted with dust cap. Frame reinforced with steel belt & solid wood block, corner protector for edge. FCL nude packing or fumigated wooden case optional for export.
Notes:
1.Fasten steel belt on frame only, do not strap tank body directly.
2.Keep tank horizontal, tilting & inversion forbidden.
3.Shock-absorbing truck for long overland shipment to reduce vibration.
4.Wood stopper inside container to avoid sliding & collision during sea freight.
5.Documents attached: packing list, COA, pressure vessel certificate, inspection report.
Why Choose us?
1.Direct manufacturer, no middleman, OEM/ODM & custom logo available.
2.Own pressure vessel workshop, CNC welding & NDT lab
3.Pre-sales: free solution design, flow calculation, 3D drawing support.
4.In-production: production photos, pre-shipment inspection video, third-party witness inspection.
5.After-sales: global online technical support, fast spare parts supply, 1-year warranty.
6.Full customs clearance documents: CE, ISO, pressure vessel certificate, material & NDT reports.
After Sales Service
1.Warranty: 12 months whole unit warranty from shipment date. Free repair & spare parts for non-human quality defects. Consumables like gaskets excluded.
2.Remote support: 7×16h online service, video guide for installation, commissioning & troubleshooting.
3.Spare parts: Valves, pressure gauges, safety relief parts always in stock.
4.Technical documents: Electronic operation manual, maintenance manual & drawings available permanently.
5.Onsite overseas service: Engineer overseas service available, customer covers travel cost.
6.Customer follow-up: Regular follow-up after delivery, monitor running status of 499L cryogenic dewar flask and send maintenance reminder.
Customer Visit
Global customers are welcome to visit our factory and inspect 499L cryogenic dewar flask production line. Book appointment in advance: raw material inspection, auto welding workshop, NDT, hydrostatic test & finished product area. Live sample demonstration & face-to-face technical discussion. Hotel booking & pick-up service available.
FAQ
Q: What medium can your 499L cryogenic dewar flask store?
A: It can store liquid nitrogen LIN, liquid oxygen LOX, liquid argon LAr, liquid carbon dioxide LCO2. Not for liquid hydrogen without special customized design.
Q: What is the boil-off rate of this 499L dewar cylinder?
A: Standard LN2 model static daily boil-off ≤1.2%/day. It depends on ambient temperature & filling level.
Q: How long is the vacuum service life of cryogenic dewar flask?
A: Designed vacuum lifespan ≥5 years. Normal maintenance can extend service life.
Q: What certificates you provide for 499L dewar cylinder for customs clearance?
A: Yes, this VGL dewar is designed for road mobile transport with reinforced frame.
Q: Do you offer built-in vaporizer for 499L dewar cylinder?
A: Optional built-in vaporizer for continuous gas supply. Please tell us your required gas flow rate.
Q: How long is production lead time for 499L cryogenic dewar flask?
A: Standard model 15-25 working days; customized version 30-40 working days.
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