195L Large Caliber Cryogenic Gas Dewar Vacuum Insulated Liquid Nitrogen Dewar Container
Products Description
195L Liquid Oxygen Dewar portable cryogenic storage tank, factory direct supply. Replace traditional high-pressure oxygen cylinders and greatly cut oxygen purchasing, transport & cylinder annual inspection cost. Double wall vacuum insulation with low evaporation loss, built-in gas supply assembly, directly generate gaseous oxygen on site. Suitable for welding & cutting in small & medium factories, gas distributor filling, mobile oxygen supply for construction site. In stock, fast delivery, full export certificates, bulk discount available.
Technical Data Table
| Specifications | DPL450-195MP | DPL450-195HP | DPL450-195VHP |
|
Geometric Volume (L)
|
195
|
195
|
195
|
|
Effective Volume (L)
|
175.5
|
175.5
|
175.5
|
|
Size(D×H)mm
|
Φ508× 1623
|
Φ508× 1626
|
Φ508× 1626
|
|
Working Pressure (MPa)
|
1.37
|
2.05
|
2.88
|
|
Set pressure of safety value (MPa)
|
1.59
|
2.41
|
3.45
|
|
Set pressure of bursting discset/Set
pressure of assistant safety value (MPa)
|
2.6/2.41
|
3.6
|
5.17
|
|
Evaporation rate(liquid nitrogen)
|
≤2.0%
|
≤2.0%
|
≤2.0%
|
|
Empty weight (kg)
|
~124
|
~144
|
~160
|
|
Maximum filling weight:Liquid oxygen (kg)
|
~200
|
~200
|
~200
|
| Maximum filling weight:Liquid nitrogen (kg) |
~142
|
~142
|
~142
|
|
Maximum filling weight:Liquid argon (kg)
|
~245
|
~245
|
~245
|
|
Maximum filling weight:LNG (kg)
|
~74
|
/ | / |
|
Maximum filling weight:Liquid carbon dioxide (kg)
|
/ |
~181
|
~181
|
|
Level gauge
|
Float type/Capacitance
|
Float type/Capacitance | Float type/Capacitance |
|
The base style
|
Stainless steel-rubber
bas
|
Stainless steel-rubber
bas
|
Stainless steel-rubber
bas
|
Product Features
✅ Integrated portable cryogenic tank, large 195L capacity, replace ~30 oxygen cylinders;
✅ Vacuum insulation reduce LOX vaporization & gas loss;
✅ Complete gas supply valve assembly, ready to use after delivery;
✅ Reinforced base, easy forklift handling for site transport;
✅ Standard pressure vessel, safe & reliable, simple maintenance.
more details
Packing & Shipping
dewar Tank wrapped with PE film, valve protective cap, fixed in metal frame, suitable for sea & land transport. Bulk loading in 20GP container to reduce unit freight cost. Pallet packing & custom shipping mark available. Image: packed dewar & container loading photo.
Application Scenarios
✅ Medical oxygen supply: backup source of oxygen supply system in hospital center, emergency transfer, altitude clinic
✅ Industrial Gases: Metal Cutting/Welding, Laser Cutting Auxiliary Gases, Electronic Component Manufacturing
✅ Scientific research experiments: low-temperature physical experiments, superconducting magnet cooling, material low-temperature treatment
✅ Food freezing: liquid nitrogen quick freezing, food preservation and transportation
✅ Aquaculture: Transportation of live fish for oxygen supply, water body oxygenation
✅ Ground Storage and Transfer of Rocket Propellant
After Sales Service
Warranty period: 1 year for the whole machine, 3 years for the vacuum system
Technical support: 24-hour online response, providing operation videos and technical documents
Supply of spare parts: Valves, liquid level gauges, safety valves and other standing stocks, fast delivery
Maintenance services: Vacuum failure diagnosis and repair plan support
How to Select vacuum dewar
① Daily consumption determines capacity;
② Working pressure (1.4/2.01/2.88MPa) must match downstream equipment;
③ Medical oxygen supply benefits from higher pressure for stable delivery;
④ Transport vehicle load and height restrictions;
⑤ The dewar is compatible with LOX/LIN/LAR/CO₂ with proper valve configuration.
Troubleshooting
| Issue | Possible Cause | Solution |
|---|---|---|
| Increased evaporation rate | Decreased vacuum level | Contact the manufacturer for vacuum testing and repair |
| Frosting/icing on the outer shell | Vacuum failure or insulation layer damage | Discontinue use immediately; send for repair or return to the manufacturer |
| Safety valve frequently trips | Improper pressure setting or overfilling | Check pressure setting; fill according to rated capacity |
| Abnormal liquid level gauge reading | Gauge malfunction or calibration error | Recalibrate or replace the liquid level gauge |
| Valve leakage | Aging of sealing ring or obstruction by debris | Replace seals, clean valve seat |
| Insufficient vaporizer output | Frosting or blockage | Defrost; check for unobstructed flow in the piping |
Our Advantages
1.Cut cylinder rental, handling & inspection cost significantly, save money for long term operation;
2.Low daily evaporation rate, reduce LOX waste and refilling frequency;
3.Built-in gas supply circuit, output gas directly without extra vaporizer;
4.Simple operation, short training for ordinary workers;
5.Vertical design, small footprint, flexible placement in workshop & warehouse.
Customer Visit
Warmly welcome global customers to visit our factory. You can visit raw material warehouse, welding workshop, vacuum test station, hydrostatic test area & finished goods warehouse. Watch full production process of 195L liquid oxygen dewar: welding, helium leak test & hydrostatic test, check samples on site. Our technical engineers discuss sizing & customized solution face to face. Pick-up service available with advance reservation.
FAQ
Q: What is lead time for 195L liquid oxygen dewar?
A: Standard stock model: 10-15 days; customized version: 25-35 days after deposit received.
Q: What payment terms you accept for cryogenic dewar?
A: T/T (30% deposit, balance before shipment), L/C at sight.
Q: How to pack 195L liquid oxygen dewar for sea shipment?
A: PE film + valve protective cap + metal frame /wooden pallet, fix with steel wire for FCL/LCL shipment.
Q: Can you send factory inspection video before delivery?
A: Yes, we can record water pressure test, vacuum test, appearance inspection video for your confirmation.
Q: Can the 195L liquid oxygen dewar output gas continuously?
A: Yes, built-in vaporizing coil, continuous gaseous oxygen output for cutting & welding.
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