China Custom 195L Cryogenic Liquid Oxygen Dewars Cylinder vacuum pump brakes

Product Description

Main Performance features of dewar gas cylinder:
1. It is mainly used for transportation and storage of liquid oxygen dewar tank, liquid nitrogen, liquid argon, liquefied natural gas and liquid carbon dioxide.
2. Adopt high vacuum multi-layer adiabatic mode to ensure low evaporation rate.
3. The built-in carburetor automatically provides 10Nm3/h of stable and continuous gas.
4. The gas phase space overpressure gas is preferred in the solar term device.
5, the use of international general CGA standard joints, all imported valve configuration.
6. Unique damping ring design meets frequent transportation requirements.
7. Suitable for: electronics, scientific research, chemical industry, welding, LNG supply and other industries.

Medium pressure cryogenic liquid container gas dewar cylinder 
Model DPL-175 DPL-195 DPL-210 DPW-499
size mm Φ505×1551mm Φ505×1675mm Φ505×1761mm 2113×760×995mm
working pressure(MPa) 1.37 1.37 1.37 1.59
Relief valve take-off pressure(MPa) 1.59 1.59 1.59 1.89
Bursting pressure of the bursting disc(MPa) 2.41* 2.41* 2.41* 2.41(2.86*)
Geometric volume (L) 175 195 210 499
Effective volume(L) 160 180 195 460
Evaporation rate (liquid nitrogen) 2.10% 2.02% 1.99% 1.70%
Empty cylinder weight(kg) 125 135 140 345
Filling Medium O2(kg) 170 190 205 478
N2(kg) 120 134 145 334
Ar(kg) 208 232 250 585
LNG(kg) 70 78 84 196
High pressure product cryogenic liquid container gas dewar cylinder 
Model DPL-175H DPL-196H DPL-210H DPW-499H
size mm Φ505×1551 Φ505×1676 Φ505×1761 2113×760×995
working pressure(MPa) 2.3 2.3 2.3 2.5
Relief valve take-off pressure(MPa) 2.41 2.41 2.41 2.86
Bursting pressure of the bursting disc(MPa) 3.62* 3.62* 3.62* 3.62(4.14*)
Geometric volume (L) 175 195 210 499
Effective volume(L) 160 180 195 460
Evaporation rate (liquid nitrogen) 2.10% 2.02% 1.99% 1.70%
Empty cylinder weight(kg) 143 152 160 405
Filling Medium O2(kg) 170 190 205 478
N2(kg) 120 134 145 334
Ar(kg) 208 232 250 585
LNG(kg) 164 183 197 460

Q1: How to ensure your cylinders quality?
A:  we have been in this field for more than 20 years. Our products have been sold almost all over the world. We allow 3rd party inspections before shipment ( on buyer's account) And we can supply certificate of quality accordingly.

Plus we have 6 machinery equipments to test material and cylinder:
1.           spectrum analyzer to detect chemical analysis;
2.           mechanical function to make tension test and bending test;
3.           X-ray silent detection to inspect circumferential weld;
4.           Hydraulic bursting test;
5.           Hydraulic testing;
6.           Air tightness test.

Q2:  About the brand name of the products?
A: In general, We use our own brand "DSW", if you have requested, Both OEM and ODM arealso available.

Q3:Can you provide a sample?
In our acceptable range,  we can offer 1 free sample for you if you pay for the freight. We will return the freight if you make an order in future.

Q4: How about your delivery time?
In general, it will take 35-60 days after receiving deposit. The specific delivery time depends on the items and quantity of your order.

Q5: What is your MOQ?
Small quantity negotiable, 1 or more containers would be appreciated.

Material: Stainless Steel
Usage: Print, Automation and Control
Structure: Gas - Liquid Damping Cylinder
Power: Hydraulic
Standard: Standard
Pressure Direction: Single-acting Cylinder


hydraulic cylinder

How do hydraulic cylinders handle the challenges of minimizing friction and wear?

Hydraulic cylinders employ several mechanisms and techniques to effectively minimize friction and wear, ensuring optimal performance and longevity. Minimizing friction and wear is crucial for hydraulic cylinders as it helps to maintain efficiency, reduce energy consumption, and prevent premature failure. Here's a detailed explanation of how hydraulic cylinders handle the challenges of minimizing friction and wear:

1. Lubrication:

- Proper lubrication is essential for minimizing friction and wear in hydraulic cylinders. Lubricating fluids, such as hydraulic oils, are used to create a thin film between moving surfaces, reducing direct metal-to-metal contact. This lubricating film acts as a protective barrier, reducing friction and preventing wear. Regular maintenance practices include monitoring and maintaining the appropriate lubricant levels to ensure optimal lubrication and minimize frictional losses.

2. Surface Finishes:

- The surface finishes of components in hydraulic cylinders play a crucial role in minimizing friction and wear. Smoother surface finishes, achieved through precision machining, grinding, or the application of specialized coatings, reduce surface roughness and frictional resistance. By minimizing surface irregularities, the risk of wear and friction-induced damage is significantly reduced, resulting in improved efficiency and extended component life.

3. High-Quality Sealing Systems:

- Well-designed and high-quality sealing systems are crucial for minimizing friction and wear in hydraulic cylinders. Seals prevent fluid leakage and contamination while maintaining proper lubrication. Advanced sealing materials, such as polyurethane or composite materials, offer excellent wear resistance and low friction characteristics. Optimal seal design and proper installation ensure effective sealing, minimizing friction and wear between the piston and cylinder bore.

4. Proper Alignment and Clearances:

- Hydraulic cylinders must be properly aligned and have appropriate clearances to minimize friction and wear. Misalignment or excessive clearances can result in increased friction and uneven wear, leading to premature failure. Proper installation, alignment, and maintenance practices, including regular inspection and adjustment of clearances, help ensure smooth and even movement of the piston within the cylinder, reducing friction and wear.

5. Filtration and Contamination Control:

- Effective filtration and contamination control are essential for minimizing friction and wear in hydraulic cylinders. Contaminants, such as particles or moisture, can act as abrasive agents, accelerating wear and increasing friction. By implementing robust filtration systems and proper maintenance practices, hydraulic systems can prevent the ingress of contaminants, ensuring clean and properly lubricated components. Clean hydraulic fluids help minimize wear and friction, contributing to improved performance and longevity.

6. Material Selection:

- The selection of appropriate materials for hydraulic cylinder components is crucial in minimizing friction and wear. Components subject to high frictional forces, such as pistons and cylinder bores, can be made from materials with excellent wear resistance, such as hardened steel or composite materials. Additionally, selecting materials with low coefficients of friction helps reduce frictional losses. Proper material selection ensures durability and minimized wear in critical components of hydraulic cylinders.

7. Maintenance and Regular Inspection:

- Regular maintenance and inspection practices are vital for identifying and addressing potential issues that could lead to increased friction and wear in hydraulic cylinders. Scheduled maintenance includes lubrication checks, seal inspections, and monitoring of clearances. By promptly detecting and rectifying any signs of wear or misalignment, hydraulic cylinders can be kept in optimal condition, minimizing friction and wear throughout their operational lifespan.

In summary, hydraulic cylinders employ various strategies to handle the challenges of minimizing friction and wear. These include proper lubrication, employing suitable surface finishes, utilizing high-quality sealing systems, ensuring proper alignment and clearances, implementing effective filtration and contamination control measures, selecting appropriate materials, and conducting regular maintenance and inspections. By implementing these practices, hydraulic cylinders can minimize friction and wear, ensuring smooth and efficient operation while extending the overall lifespan of the system.

hydraulic cylinder

Advancements in Hydraulic Cylinder Technology Improving Corrosion Resistance

Advancements in hydraulic cylinder technology have led to significant improvements in corrosion resistance. Corrosion is a major concern in hydraulic systems, especially in environments where cylinders are exposed to moisture, chemicals, or corrosive agents. These advancements aim to enhance the durability and longevity of hydraulic cylinders. Let's explore some of the key advancements in hydraulic cylinder technology that have improved corrosion resistance:

  1. Corrosion-Resistant Materials: The use of corrosion-resistant materials is a fundamental advancement in hydraulic cylinder technology. Stainless steel, for example, offers excellent resistance to corrosion, making it a popular choice in marine, offshore, and other corrosive environments. Additionally, advancements in metallurgy have led to the development of specialized alloys and coatings that provide enhanced corrosion resistance, extending the lifespan of hydraulic cylinders.
  2. Surface Treatments and Coatings: Various surface treatments and coatings have been developed to protect hydraulic cylinders from corrosion. These treatments can include electroplating, galvanizing, powder coating, and specialized corrosion-resistant coatings. These coatings create a barrier between the cylinder surface and corrosive elements, preventing direct contact and inhibiting the onset of corrosion. The selection of appropriate coatings depends on the specific application and environmental conditions.
  3. Sealing Technology: Effective sealing systems are crucial in preventing water, moisture, and contaminants from entering the cylinder and causing corrosion. Advancements in sealing technology have led to the development of high-quality seals and advanced sealing designs that offer superior resistance to corrosion. These seals are typically made from materials specifically engineered to withstand corrosive environments, ensuring long-term sealing performance and minimizing the risk of corrosion-related issues.
  4. Improved Surface Finishes: The surface finish of hydraulic cylinders plays a role in their resistance to corrosion. Advancements in machining and polishing techniques have allowed for smoother and more uniform surface finishes. Smoother surfaces reduce the likelihood of corrosion initiation and make it easier to clean and maintain hydraulic cylinders. Additionally, specialized finishes, such as passivation or chemical treatments, can be applied to further enhance corrosion resistance.
  5. Environmental Protection Features: Hydraulic cylinders can be equipped with additional features to protect against corrosion. These features may include protective boots, bellows, or shields that guard vulnerable areas from exposure to corrosive agents. By incorporating these protective elements into the design, hydraulic cylinders can withstand harsh environments and minimize the risk of corrosion-related damage.

In summary, advancements in hydraulic cylinder technology have significantly improved corrosion resistance. The use of corrosion-resistant materials, advanced surface treatments and coatings, innovative sealing technology, improved surface finishes, and the incorporation of environmental protection features have all contributed to enhanced durability and longevity of hydraulic cylinders in corrosive environments. These advancements ensure reliable performance and reduce the maintenance and replacement costs associated with corrosion-related issues.

hydraulic cylinder

What is a hydraulic cylinder and how does it function in various applications?

A hydraulic cylinder is a mechanical actuator that converts hydraulic energy into linear force and motion. It plays a critical role in various applications where controlled and powerful linear motion is required. Hydraulic cylinders are commonly used in industries such as construction, manufacturing, agriculture, and transportation. Here's a detailed explanation of what a hydraulic cylinder is and how it functions:

Definition and Components:

- A hydraulic cylinder consists of a cylindrical barrel, a piston, a piston rod, and various seals. The barrel is a hollow tube that houses the piston and allows for fluid flow. The piston divides the cylinder into two chambers: the rod side and the cap side. The piston rod extends from the piston and provides a connection point for external loads. Seals are used to prevent fluid leakage and maintain hydraulic pressure within the cylinder.


- The function of a hydraulic cylinder is to convert the pressure and flow of hydraulic fluid into linear force and motion. The hydraulic fluid, typically oil, is pressurized and directed into one of the chambers of the cylinder. As the fluid enters the chamber, it applies pressure on the piston, causing it to move in a linear direction. This linear motion of the piston is transferred to the piston rod, creating a pushing or pulling force.

Working Principle:

- The working principle of a hydraulic cylinder is based on Pascal's law, which states that pressure exerted on a fluid in a confined space is transmitted equally in all directions. In a hydraulic cylinder, when hydraulic fluid is pumped into one side of the cylinder, it creates pressure on the piston. The pressure is transmitted through the fluid to the other side of the piston, resulting in a balanced force across the piston and piston rod. This force generates linear motion in the direction determined by the fluid input.


- Hydraulic cylinders find extensive use in a wide range of applications due to their ability to generate high forces and precise control of linear motion. Some common applications include:

1. Construction Equipment: Hydraulic cylinders are used in excavators, loaders, bulldozers, and cranes for lifting, pushing, and digging tasks.

2. Manufacturing Machinery: Hydraulic cylinders are employed in presses, machine tools, and material handling equipment for pressing, clamping, and lifting operations.

3. Agricultural Machinery: Hydraulic cylinders are used in tractors, harvesters, and irrigation systems for tasks like steering, lifting, and controlling attachments.

4. Transportation: Hydraulic cylinders are utilized in vehicles such as dump trucks, garbage trucks, and forklifts for tilting, lifting, and tipping operations.

5. Aerospace and Defense: Hydraulic cylinders are employed in aircraft landing gear, missile systems, and hydraulic actuators for control surfaces.

6. Marine and Offshore: Hydraulic cylinders are used in ship steering systems, cranes, and offshore drilling equipment for various lifting and positioning tasks.

In these applications, hydraulic cylinders offer advantages such as high force capability, precise control, compact size, and durability. They provide efficient and reliable linear motion, contributing to enhanced productivity and functionality in a wide range of industries.

Overall, hydraulic cylinders are integral components in various applications where controlled and powerful linear motion is required. Their ability to convert hydraulic energy into mechanical force makes them invaluable in numerous industries, enabling the operation of heavy machinery, precise positioning, and efficient load handling.

China Custom 195L Cryogenic Liquid Oxygen Dewars Cylinder   vacuum pump brakesChina Custom 195L Cryogenic Liquid Oxygen Dewars Cylinder   vacuum pump brakes
editor by CX 2023-12-03