Seamless Low Evaporation 210L Cryogenic Liquid Oxygen Dewar Vessel For Oxygen Filling Station

Seamless Low Evaporation 210L Cryogenic Liquid Oxygen Dewar Vessel for Oxygen Filling Station

The Cryogenic Liquid Cylinder is a vacuum-insulated, double-layered pressure vessel designed for the storage, transportation, and automatic gas supply of cryogenic liquids. It effectively stores liquid oxygen (LOX), liquid nitrogen (LIN), liquid argon (LAR), liquid carbon dioxide (CO2), and liquefied natural gas (LNG) at extremely low temperatures.

Built with advanced multi-layer insulation and a high-vacuum system, this cylinder provides exceptional thermal efficiency while minimizing liquid loss. It is widely used across medical, industrial, scientific, and energy sectors where high-purity cryogenic gases are essential.

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

✅ High vacuum multilayer insulation system. The vacuum degree of the interlayer is ≤ 10 °C ² Pa, and with the multi-layer aluminum foil reflective layer, the daily evaporation rate of liquid nitrogen is controlled at ≤ 1. 99%, which significantly reduces the replenishment of liquid nitrogen and operating costs.

✅ Built-in vaporizer, ready to use. Built-in vaporization coil is standard, which can automatically provide 10 Nm ³/h continuous gas output without additional installation of external vaporizer. The gas-liquid separation design ensures the purity of the output gas.

✅ Stainless steel liner support structure. The liner support system is made of stainless steel, which achieves a balance between low thermal conductivity and high strength, and is suitable for filling and transportation vibration conditions.

✅ Import valve and CGA standard interface. It is equipped with imported brand valves such as Rego (or domestic high-quality valves of the same grade), adopts CGA standard interface, and is compatible with the world's mainstream gas filling equipment and pipeline systems.

✅ Damping ring design. The shock-absorbing structure specially designed for transportation conditions can prolong the vacuum life due to the impact of road vibration on the liner support system.

1.Superior Vacuum Insulation - Industry-leading insulation for longer holding times.

2.Automatic Gas Supply - Continuous operation without frequent manual intervention.

3.Heavy-Duty Stainless Steel Construction - Ensures safety and durability.

4.User-Friendly Handling & Transport Features - Designed for ease of movement and operation.

5.Compliance with Industry Standards - Meets international safety and quality certifications.

When selecting a 210L low-temperature Duva tank, it is necessary to make decisions around the four dimensions of "medium type-working pressure-use scenario-gas supply demand":

① Confirm the medium. Liquid nitrogen (LIN) selection of 1.37 MPa can cover most of the storage and gas supply needs; Liquid oxygen (LOX) requires strict oil prohibition and oxygen-compatible valves; Due to the high critical temperature of LCO2, it is necessary to confirm that the working pressure matches the safety discharge configuration; LNG transportation needs to pay additional attention to the filling factor and safety distance.

② Confirm work pressure. 1.37 MPa is suitable for conventional storage, laboratory gas supply, welding shielding gas; 2.3 MPa is suitable for laser cutting (higher output pressure is required); 2.88 MPa and above are suitable for special industrial scenarios. The pressure level directly determines the thickness of the safety valve, plate and wall, and cannot be mixed.

③ Confirm the gas supply. If continuous gas supply is required, confirm whether the capacity of the built-in vaporizer (standard 10 Nm ³/h) covers the peak gas consumption; If you only do storage and transfer, economical configuration is enough. Built-in booster coil can be installed at external carburetor cost.

④ Confirm transportation. Customers with high-frequency cross-regional transportation should give priority to models with shock-absorbing ring design (such as DPL series), and confirm whether the container has passed the vibration test or has transport-type certification. If the transportation conditions are extreme, it is recommended to consider the adsorption transport type Duvite tank

Packaging standard:

1.Each Dovite tank is separately loaded with a fumigation-free wooden box or a custom-made steel frame pallet, and the tank body is filled with shock-absorbing foam/rubber pads to prevent displacement and collision during transportation.

2.Protective caps are installed on all valve joints of the tank to prevent damage and foreign objects from entering during transportation.

3.The accompanying document bag (including material book, inspection report, operation manual) is fixed in the designated position in the box.

Transportation Requirements:

1.When transporting, it should be placed upright, and the tank body should be fixed in the compartment or container with straps, and it should not be inverted or tilted.

2.When the empty tank is transported, the valve is slightly opened or a relief-type protective cap is used to prevent abnormal internal pressure caused by temperature changes.

3.When filling liquid nitrogen for transportation, ensure that the liquid level does not exceed 90% of the nominal filling amount, leaving gas phase space.

4.Avoid direct sunlight and high temperature, and the compartment temperature is recommended to be controlled within the range of-20 °C to + 50 °C.

1.Warranty: Please fill in (Recommended: 1 year full unit; 3–5 years vacuum insulation).

2.Coverage: Manufacturing defects, premature vacuum failure, valve malfunction - non-human factors.

3.Response Time: Within 24 hours upon receiving after-sales request. On-site support solution within 48 hours (domestic).

4.Spare Parts: Common parts (valves, level gauge, safety valve, burst disc, protective caps) in stock for global shipment.

5.Technical Support: Filling operation training video (multi-language), vacuum maintenance guide, troubleshooting manual.

6.Out-of-Warranty Service: Paid repair, vacuum re-evacuation, valve replacement.

1.Direct cryogenic pressure vessel manufacturer with official pressure vessel license, no middleman markup.

2.Full pre-delivery inspection: hydrostatic test, leak test, vacuum test, NDT. Full inspection report & pre-shipment video available.

3.OEM & ODM available: custom logo, nameplate, valve assembly, pressure rating.

4.Fast response: 7*16h online sales, engineering team support site installation guidance & operation training.

5.Spare parts in stock, worldwide door-to-door logistics solution, support third-party inspection (BV/SGS).

Overseas customers are warmly welcome to visit our factory. Arrange production line tour, finished 210L cryogenic storage dewar display, pressure test demonstration & face-to-face technical discussion. Pick-up service & interpreter available by advance appointment. Factory video, certificates & project references available before your visit.

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