DPW650-410-2.5 oxygen cylinder tanks

  • Dimension(Diameter*Height&Length)(mm): 1822mm*870mm*1058mm
  • Nominal capacity(Liters): 410L
  • Working pressure(MPa): 2.5MPa
  • Empty weight (KG): 382KG
  • ¥0.00
    Description trading term Warranty OEM Custom


    Gas cylinder introduction

          The DPW series of cryogenic cylinders produced by our company are vacuum insulated stainless steel containers designed for storing and transporting low temperature liquid oxygen, liquid nitrogen, liquid argon, liquefied natural gas or liquid carbon dioxide. They can transport cryogenic liquids and are widely used. In the fields of machinery, shipbuilding, medical, electronics, chemicals, food, materials, minerals, scientific research, etc. 



    Cylinder specific parameters



    Nominal capacity(Liters)


    Effective capacity(Liters)



    liquid oxygen,liquid nitrogen,liquid argon,liquid carbon dioxide,LNG,N2O

    Working pressure(MPa)


    Min working temperature ()


    Hydraulic test pressure(MPa)


    Leakage test pressure(MPa)


    First safety valve open pressure(MPa)


    Bursting disk open pressure(MPa)


    Second safety valve open pressure(MPa)


    Evaporation rate for LN2 (M³/h)


    Evaporation rate for LNG (M³/h)


    Gas flow rate (M³/h)


    Empty  weight (KG)


    Dimension(Length * width * height)/(MM)


    Filling weight for LO2(KG)


    Filling weight for LN2(KG)


    Filling weight for LAr(KG)


    Filling weight for LNG(KG)


    Filling weight for CO2(KG)



    ♦Specific structure

           The series of welded insulated cylinders are high-strength liquid cylinders with double-layer structure: composed of inner and outer containers. The inner and outer biliary are insulative layers, and the heat insulating layer is provided with a plurality of layers of heat insulating material and maintains a vacuum.


    Material  Selection


           Both the inner and outer cylinders are made of stainless steel, and the supercharged coils are made of copper.
           Among them,Steel plate material: stainless steel

           Copper tube:high effective heat exchange tube cryogenic and high strength easy to bend ,easy to twist,Not  easy to   break and crack,Frost heave and impact resistance.


    Valve and component introduction


    ♦Liquid fill/withdrawal valve: for filling and use of cryogenic liquids
    ♦Safety valve: pressure relief for the vessel above the maximum working pressure (automatic)
       Note: Except for the periodic verification of the safety valve verification mechanism specified by the state, no user can adjust the valve by himself.
    ♦Vent valve: A gas used to remove the space in the bladder during filling of the container. While satisfying the smooth filling of the container, the filling pressure can be controlled.
       Note: This valve can also be used as an exhaust valve to reduce the pressure of the container (internal pressure). However, when this valve is used as an exhaust valve, avoid excessive instantaneous flow and exhaust. This valve should not be opened for the rest of the time except when filling the cryogenic liquid and exhausting.
    ♦Pressure gauge: shows the cylinder liner pressure in psig or Kpa.
    ♦Level gauge: The level indicated by the gauge can only be approximated and should not be used for accurate metering. Accurate calculations must be weighed.
    ♦Gas use valve: used for the opening of the gas path of the gas vaporization circuit of the gas cylinder and the inlet port of the user gas.
    ♦Combination regulator: (1) preferentially use the part of the gas in the vessel inner gas chamber space above the set pressure;
      (2) A control (limit value) for the maximum boost pressure (drive pressure) during the pressurization process. The adjustment range of the device is 0.34-2.38MPa (50-350psig).
        Note: Under normal circumstances, users should not adjust this regulator. If the user wants to adjust, adjust the adjustment screw on the device. The adjustment method is: screwing in the clockwise direction - the pressure is increased, generally the pressure is increased by about 0.2 MPa per one turn; the counterclockwise twisting - the pressure is lowered, generally the pressure is reduced by about 0.2 MPa per one turn.
    ♦Vacuum valve: vacuum seal for container compartment space; also used for interlayer pressure relief.
       Note: Do not move the valve at any time, otherwise it will cause damage to the container.
    ♦Vacuum bursting disc: used for venting pressure when the safety valve is not working properly.
       Note: (1) The film can only be used once. After the membrane has been applied, it must be replaced.
              (2) After the membrane has been applied, the safety valve must be sent to the nationally designated safety valve inspection mechanism before the new diaphragm can be replaced.
    ♦Pressure building valve: A conduit passage for opening the vessel pressure establishing system to enable the vessel to establish a certain driving pressure (internal pressure) to drive the cryogenic liquid in the vessel.
       Note: This valve does not need to be opened unless the driving pressure (internal pressure) of the container is stable or the driving pressure (internal pressure) of the container is lower than the user's gas pressure. However, after each gas is used, be sure to check if the valve is closed. Otherwise, continuous internal circulation will waste the gas resources of the container.


    Welding process

    Welding includes: circumferential seam welding (head welding), vertical seam welding, valve welding, etc.

    Specific test


    ♦vaccum test

        In the manufacturing process of vacuum system,container and device,the vacuum tightness of them and the position of leak hole are determined by using the vacuum leak detection technology,so that  measures can be taken to seal the leak hole so as to maintain the vacuum state in the system ,container and devcice

    ♦helium leak detection
        Helium leak detector is a special instrument for leak detection with helium gas as leak indicator,it has stable performance and high sensitivity.
        In addition, there are pressure detection, radiation detection,air tightness test,evaporation rate detection, component inspection, valve group inspection and appearance inspection, and the corresponding test report and certificate.

    ♦Safety device
        The inner tank is designed with safety valve and secondary rupture disc to protect the cylinder during overpressure. In the case of overpressure, the safety valve is opened to relieve the pressure rise caused by the normal heat leakage loss of the structure such as the heat insulation layer and the support to the specified pressure rise or the vacuum is destroyed and under the condition of misfire. When the safety valve is disabled, the rupture disc will open to relieve pressure to ensure safe pressure inside the bottle.
        The protection of the casing under overpressure conditions is achieved by means of a vacuum plug. If the liner leaks (resulting in a high jacket pressure), the vacuum plug will open to relieve pressure.


    Method of use

    Low temperature insulated cylinders are mainly used to transport liquids (liquid oxygen, liquid nitrogen, liquid argon, liquid carbon dioxide and LNG). Therefore, it can supply both liquid and gas (main function).

    ♦ Use gas
        Use gas directly from the bottle: After the cylinder is filled with liquid and transported by road, there is usually a higher tank pressure, and the gas supply can be obtained immediately by opening the gas phase valve. If continuous air supply is required, the boost valve should be opened. (Where the cylinder will use the combination regulator to automatically adjust the liner pressure)

        Tip: Increase the gas supply – you can connect two or more liquid containers together and use a manifold attachment to create a higher capacity gas supply system (DPL series vessels use only its built-in vaporizer at normal temperature and pressure) The gas supply flow rate is 9.2 m3/h. If a larger vaporization amount is required, an external vaporizer accessory can be used.

    ♦ Use liquid
       Take the liquid directly from the bottle: When taking the liquid directly from the bottle, first determine that the pressure in the cylinder is higher than the pressure in the liquid equipment, so that the liquid in the cylinder flows into the liquid equipment through the pipeline and the valve by the pressure difference.

         The following steps should be taken for liquid delivery:
         (1) Connect the conveying pipe to the liquid phase valve. It is recommended to use a vacuum insulated hose for the conveying pipe.
         (2) Connect the other end of the delivery tube to the liquid equipment.
         (3) Open the liquid phase valve on the cylinder, which can adjust the flow rate of the liquid.
         (4) When the delivery is completed, close the valve of the receiving device, close the liquid phase valve of the cylinder, and release the pressure in the delivery pipe to zero.
         (5) Remove the duct from the receiving device.


    Adequate inventory

    The stock is filled to ensure that the customer's needs can be met.


    100% vacuum leak detection
    100% decompression test
    100% evaporation test
    To ensure that the quality of each product is qualified


        Our company will hold some exhibitions on a regular basis to enable our customers to fully understand our cylinders.
        At present, Deyang has exported low-temperature insulated cylinders to more than 30 countries and regions, such as Russia, Canada, Malaysia, Vietnam, Indonesia, Thailand, etc., and has received good feedback from domestic and foreign customers.




    ♦Can you tell us more about the material of the cylinder and the specific test during the production process?
         Our cylinders are all made of stainless steel. At the same time, in the specific production process, there will be vacuum detection, evaporation rate detection, component testing (bursting discs, etc.), valve group testing (pressure reducing valves, safety valves, etc.), appearance inspection, pressure testing, etc. And we issue corresponding test reports and certificates .In addition, there are leak detection, radiation detection, and air tightness testing to ensure 100% safety during use.

    ♦How is your cylinder different from other cylinders?
         The cryogenic liquid cylinders we produced adopted the advanced techniques and the whole production process is under the strict quality-guarantee control system. It can be applied to store, transport the cryogenic liquefied gas products(liquefied oxygen, liquid argon, liquid nitrogen, liquid natural gas, liquid CO2,etc),and it can automatically provide continous gases.
       1. Mainly used in storage and transportation of liquid oxygen, liquid nitrogen, liquid argon, and liquefied natural gas.
       2. Superior product performance: welding technology is the first in China, vacuum performance is guaranteed for 3 years.
       3. Adopted high multi-layer insulation method to ensure the low evaporation rate. Compared to companies of the same ability, the static evaporation rate (24 hours) of the cylinders we produce is the lowest in the country, averaging 1.7%.
       4.The pressure-proof non-destructive time (that is, the pressure starts from 0 to the safety valve) is longer than the domestic holding time by 2-3 days, with an average of 11 days.
       5. Inner vaporizer provides a 10Nm3/h stable continuous gas.
       6. Solar installation use in the priority of gas-pressure and gas space.
       7. Adopt the international CGA standard tie-in and all the valves installed imported from USA(REGO)
       8. Unique design of damping ring meets the needs of frequent transportation.
       9. Suitable for electronics, research, chemical industry, welding, and LNG supply industries.

    ♦What are the payment methods? Is there any promotion?
        The price of a gas cylinder will be determined based on the amount. More than 10 vertical bottles (80L/175L/195L/210L/360L) will be offered at a discount of 15 dollars on the unit price; more than 5 horizontal bottles will be offered at a discount of 30 dollars on the unit price (410L/450L /500L). Price can be negotiated.

    ♦What is the after-sales service?
      1. Have a professional team (engineer)
      2. There are special testing institutions and knowledge (customers who purchase gas cylinders in our factory have    discounts)
      3. Quick repair (only need to vacuum, that is, do not throw away the outer cylinder, the cylinder can be sent to the customer   within a week, and the old as new)

    ♦What accessories are there for your cylinders? What packaging?
      The gas cylinder is standard as a hose, two joints. Packaging can be packed in wooden cases.

    Maximize Efficiency with DPW650-410-2.5 Oxygen Cylinder

    Revolutionary Storage and Transport

    Our DPW650-410-2.5 Series Oxygen Cylinder is a breakthrough in cryogenic technology, offering unmatched storage capacity, safety, and durability for liquid gases. Its vacuum insulated stainless steel design ensures minimal evaporation and long-term reliability.

    Key Specifications:

    • Capacity: 410 Liters with an effective capacity of 369 Liters for optimal storage.
    • Working Pressure: 2.5 MPa, designed for high-performance and safety.
    • Materials: Both inner and outer tanks are crafted from high-grade stainless steel, ensuring durability and corrosion resistance.
    • Efficiency: Features an evaporation rate of ≤1.8 for LN2 and LNG, maximizing the retention of stored liquids.

    Designed for Versatility

    The DPW650-410-2.5 Series is not just an oxygen cylinder; it's a versatile solution for storing a variety of cryogenic liquids. Its robust design and advanced insulation make it perfect for use in a wide range of industries, from healthcare to aerospace.

    Have a question about our products? Submit your inquiry now and let our experts provide you with the answers you need!

    Service Advantages of Deyang Dewars
    At Deyang Dewars, we're committed to providing not just superior cryogenic products but also comprehensive services that address all aspects of our partnership with clients. Here's how we stand out in service advantages:

    1. Seamless Cooperation Process
    Inquiry and Consultation: Start with a simple inquiry. Our team is ready to discuss your needs, offering expert advice and solutions tailored to your specific requirements.

    Customization and Confirmation: Whether it's customizing the specifications of a cryogenic cylinder or adapting our services to fit your project, we work closely with you to ensure every detail is confirmed to your satisfaction.

    Production and Quality Assurance: With a focus on quality, we proceed to production, keeping you informed at every stage. Our rigorous quality assurance process guarantees that every product meets the highest standards.

    Delivery and Follow-Up: We ensure timely delivery of your order, followed by a comprehensive follow-up to address any queries or additional needs you might have.

    2. Packaging Methods
    Safety First: Our packaging is designed to ensure the safe transport of cryogenic products. We use robust, secure materials that protect the items during shipping and handling.

    Eco-Friendly Options: We're committed to sustainability, offering eco-friendly packaging solutions that minimize environmental impact without compromising on safety or quality.

    3. Return and Exchange Policy
    Support and Assistance: Throughout the return or exchange process, our customer service team is here to provide support and assistance, ensuring a smooth and satisfactory resolution.

    Discover Deyang Dewars: Pioneers in Cryogenic Solutions

    Welcome to Deyang Dewars, where innovation meets excellence in the field of cryogenic technology. Our journey began with a vision to revolutionize the storage and transportation of liquid gases, providing cutting-edge solutions for industries worldwide. From medical to aerospace, we've been at the forefront of delivering high-quality, reliable cryogenic cylinders and tanks.

    Why Choose Deyang Dewars?

    Unmatched Quality: Our products, including the DPW650-410-2.5 Series Oxygen Cylinder, set the standard for reliability and efficiency in cryogenic storage.
    Expertise You Can Trust: With years of experience and a commitment to innovation, we're recognized leaders in cryogenic technology.
    Customer-Centric Approach: At Deyang Dewars, your needs are our priority. We offer tailored solutions to meet the unique requirements of your industry.
    Global Reach, Local Service: With products used in over 30 countries, we maintain a local approach to service, ensuring your needs are met promptly and efficiently.
    Our Promise to You

    At Deyang Dewars, we're more than just a supplier; we're your partner in cryogenic technology. We promise to provide not only high-quality products but also comprehensive support and service to ensure your needs are met, today and in the future.

    Join us on our journey of innovation and excellence. Welcome to Deyang Dewars, where your cryogenic needs are our mission.

       Trading termFOB  QINGDAO
       Payment termBy T/T
       Lead Time5days for 1-10units
                        10days for 10-40units
                        15days for 40-50units
                        To be negotiated for 100units

       One year guarantee for wearing parts, 3 sets of vulnerable parts will be given for every 100 sets of cylinders.
       Gas bottle vacuum warranty 3 years, no artificial (collision, fall, etc.) factors,provide new one for free.
       Due to the quality problems caused by customers' use, we provides paid services.

        We can produce customized products according to customers' requirements:
        We can produce according to your brand name if the order quantity is 40 UNITS
        We can produce if you want to Customize other international import valves ,The MOQ is 80UNITS.
        We can produce Other specifications and models customized by your company, The MOQ is 150UNITS.