Self-pressurized Liquid Nitrogen Tank YDZ-300

| Product Overview

The YDZ-300 Self-Pressurized Liquid Nitrogen Tank is a heavy-duty cryogenic equipment developed by Zhonghuo, tailored for large-scale storage, transport, and supply needs across industries. Boasting an effective capacity of 300L and geometric volume of 313L, this tank features overall dimensions of 706×1650MM, an empty weight of 128KG, and a full weight of 368KG. Operating at a maximum pressure of ≤0.1Mpa, it offers an ultra-low daily evaporation rate of 1.10% and a high flow rate of ≥10L/Min. Powered by an advanced self-pressurization system, it vaporizes internal liquid nitrogen to generate pressure, enabling automatic, continuous liquid discharge for efficient refilling of other tanks or equipment. Constructed with high-quality austenitic stainless steel inner and outer tanks and a high-vacuum insulation structure, it maintains a stable -196°C deep low-temperature environment, making it suitable for industrial production lines, large laboratories, and bulk cryogenic media management.

| Core Advantages

Large-Capacity & High-Efficiency Supply

With a 300L effective capacity, the tank meets high-volume liquid nitrogen demands, reducing refill frequency for industrial-scale operations. The ≥10L/Min flow rate ensures rapid, continuous supply to production lines, laboratory equipment, or other storage tanks, boosting operational efficiency.

Exceptional Insulation Performance

The high-vacuum insulation layer and stainless steel construction minimize daily evaporation loss to just 1.10%—one of the lowest in its class. This extends storage time, reduces liquid nitrogen consumption, and lowers long-term operational costs for large-scale users.

Durable & Mobile Design

Built with a robust stainless steel structure to withstand industrial environments, the tank is equipped with braking casters for flexible movement within factories, workshops, or large laboratories. Its 706×1650MM dimensions balance capacity and maneuverability, adapting to diverse industrial and research settings.

Advanced Safety & Monitoring Features

Compatible with liquid nitrogen tank monitoring terminals and software, enabling remote transmission of liquid level, pressure, and other data. Includes low liquid level and overpressure remote alarms, as well as manual remote pressurization and replenishment control. Equipped with high-precision HONGQi pressure gauges and safety valves for real-time pressure monitoring and reliable pressure relief.

| Application Fields

Industrial Manufacturing & Metal Processing

Ideal for deep cryogenic treatment of metal materials in large-scale manufacturing. Improves metallurgical structure, enhancing hardness, strength, and wear resistance of automotive parts, tooling, and precision components. Facilitates dimensional adjustment of large batches of parts for interference fit assembly, optimizing production quality.

Biomedical & Pharmaceutical Production

Supports bulk long-term preservation of vaccines, cell cultures, and biological reagents in pharmaceutical factories and biotech facilities. The -196°C environment maintains the activity of large-volume biological samples, ensuring consistency in production and research processes.

Aerospace & Military Applications

Provides reliable cryogenic storage and supply for aerospace materials testing, rocket propellant research, and military equipment low-temperature performance trials. Meets strict safety and stability requirements for high-stakes industrial and defense applications.

Agriculture & Livestock Breeding

Enables large-scale preservation and long-distance transport of semen from elite breeding cattle, sheep, and rare animals. Supports commercial artificial insemination programs, enhancing breeding efficiency and genetic improvement in the livestock industry.

Low-Temperature Chemical & Semiconductor Industries

Serves as a stable cold source for large-scale low-temperature chemical reactions and semiconductor wafer processing. Automatically replenishes liquid nitrogen for industrial refrigeration equipment, ensuring continuous operation of production lines in semiconductor factories and chemical plants.

| Operation & Safety Guidelines

Pre-Operation Checks

Structural Inspection: Examine the tank shell for damage; ensure the vacuum system is intact and the pressure relief valve is functional.

Accessory Verification: Check lifting equipment, hoses, and level gauges for integrity and clarity; replace any damaged components.

Pre-Cooling Process: For new or idle tanks, inject 1/10 of the total capacity of liquid nitrogen to pre-cool the inner tank. Allow boiling to cease and liquid to stabilize before full filling to prevent thermal shock.

Safe Operation Practices

Mandatory PPE: Wear cryogenic-resistant gloves, face shield, long-sleeved protective clothing, and closed-toe shoes. Prohibit cotton gloves as they absorb liquid nitrogen and cause frostbite.

Ventilation Requirement: Operate in a well-ventilated area with adequate air circulation; avoid confined spaces to prevent nitrogen gas buildup and oxygen depletion.

Filling Protocol: Use a dedicated transfer system to pour liquid nitrogen slowly along the inner wall. Do not exceed 80% of the tank’s capacity to accommodate thermal expansion.

Maintenance & Storage

Regular Monitoring: Check liquid level and pressure daily; record usage data. Replenish liquid nitrogen when the level drops below 30%.

Cleaning & Care: Wipe the tank exterior with a dry cloth. For prolonged inactivity, empty the tank, defrost naturally, clean the inner liner with warm water, and dry thoroughly to prevent corrosion.

Storage Position: Keep the tank upright in a cool, dry, and well-ventilated area; avoid direct sunlight, high temperatures, or sharp impacts.

| Production Process

The YDZ-300 is manufactured through a state-of-the-art production workflow to ensure industrial-grade reliability:

Premium Material Sourcing: High-strength austenitic stainless steel is selected for the inner and outer tanks, undergoing strict quality checks for purity and thickness.

Precision Engineering: The inner tank is fabricated with automated welding technology to ensure seamless joints and vacuum tightness. The outer shell is formed to withstand industrial transport and usage stresses.

Insulation System Integration: A multilayer high-efficiency insulation material is wrapped around the inner tank, followed by high-vacuum pumping to eliminate heat transfer and minimize evaporation.

Component Calibration: Pressure gauges, safety valves, booster coils, and liquid level sensors are installed and calibrated to meet international industrial standards.

Rigorous Testing: Each tank undergoes pressure endurance testing, vacuum retention testing, and evaporation rate validation. Functional tests include self-pressurization performance and emergency pressure relief.

Quality Assurance: Final inspection covers all structural, functional, and safety aspects; only tanks passing all tests are labeled, packaged, and shipped.

| FAQ

Is the YDZ-300 suitable for outdoor storage?

Yes, the tank is designed for both indoor and outdoor use. However, it should be placed in a sheltered area to avoid direct sunlight, rain, or snow. Ensure the tank is secured upright and protected from extreme temperature fluctuations.

How does the self-pressurization system work?

The system vaporizes a small amount of liquid nitrogen inside the tank using ambient heat or a built-in booster coil. The resulting gas increases internal pressure, forcing liquid nitrogen to discharge automatically through the outlet valve—eliminating the need for external pumps or manual pouring.

What should I do if the pressure gauge shows abnormal readings?

If pressure exceeds the ≤0.1Mpa limit or fluctuates unexpectedly, immediately stop using the tank. Check the pressure relief valve for blockages; ensure the tank is not overfilled. Contact technical support for inspection and maintenance—do not attempt to disassemble the pressure system yourself.

Can the YDZ-300 be customized for specific industrial needs?

Yes, we offer customization options such as specialized nozzles, extended hoses, or integrated monitoring systems to meet unique application requirements. Contact our sales team to discuss your specific needs for industrial production, research, or transport.

| Call to Action

Elevate your large-scale cryogenic operations with the YDZ-300 Self-Pressurized Liquid Nitrogen Tank—industrial-grade capacity, exceptional insulation, and intelligent safety features make it the top choice for manufacturing, research, and agriculture. With 1000 units in stock, inquire today for a competitive quote or add to basket to streamline your cryogenic supply chain. Our dedicated team provides technical consultation, installation guidance, and after-sales support to ensure seamless integration into your operations. Invest in the YDZ-300 for reliable, efficient, and safe bulk liquid nitrogen storage and supply—your partner for industrial excellence in low-temperature management.