86183336073597
cncd@cryocontainer.com
enLanguage

Cryogenic Dewar

Cryogenic Dewar Manufacturer for Reliable Liquid Nitrogen, Oxygen, and Argon Storage

 

Industrial and laboratory storage vessels engineered for the containment and handling of liquefied atmospheric gases including liquid nitrogen (LN2), liquid argon (LAr), and liquid oxygen (LOX). Constructed with austenitic stainless steel inner vessels and outer jackets, utilizing high-vacuum multi-layer insulation (MLI) to minimize thermal conduction and radiation. Units maintain internal liquid phases at cryogenic temperatures down to minus 196 degrees C, supporting pressurized gas supply and liquid withdrawal for industrial processing, biological sample preservation, and laboratory research.

 

 
First 1234567 Last
 
Product Types

Series

Primary Application

Capacity Range (L)

Working Pressure (MPa)

Key Structural Feature

DPL Series (Standard Pressure)

Liquid gas storage, transport, and continuous gas supply

175L - 500L

0.7 - 2.4

Integrated pressure buildup regulator, dual safety relief valves, liquid/gas phase dual circuits

YDS Series (Storage & Transport)

Laboratory biological sample storage, transport of small-batch liquid nitrogen

10L - 100L

Unpressurized (0.0 MPa)

High-strength aluminum-alloy or stainless steel body, multi-layer vacuum insulation, neck tube designed for low thermal conductivity

CRYO-W Series (Custom Industrial)

Precision metal deep-treatment, cold-trap cooling, and OEM integration

50L - 1000L

Customized (0.1 - 3.0)

Customized nozzle configuration, horizontal or vertical orientation, reinforced mounting saddles

 

Technical Specifications

Technical Parameter

DPL-175 Standard Spec

DPL-450 High-Capacity Spec

YDS-30 Laboratory Spec

Geometric Capacity (L)

188

499

31.5

Effective Capacity (L)

175

450

30.0

Maximum Working Pressure (MPa)

1.38 (19.9 psi)

1.58 / 2.30

0.0 (Unpressurized)

Static Evaporation Rate (LN2 %/day)

Less than 2.1%

Less than 1.6%

Less than 0.08L/day absolute loss

Normal Gasification Rate (m3/h)

9.2

16.5

N/A (Liquid phase only)

Inner Vessel Material

Austenitic Stainless Steel (S30408)

Austenitic Stainless Steel (S30408)

High-Strength Al-Mg Alloy

Outer Shell Material

Carbon Steel with Powder Coating

Carbon Steel with Powder Coating

Al-Alloy / Anti-Corrosion Coating

Insulation System

High-Vacuum Multi-Layer Insulation (MLI)

High-Vacuum Multi-Layer Insulation (MLI)

High-Vacuum Multi-Layer Insulation (MLI)

Empty Weight (kg)

118

390

14.2

 

Applications
 

Biological Sample Storage

 

Long-term preservation of biological specimens, vaccines, semen, and cellular samples in hospital biobanks and research laboratories.

Gas Supply Systems

 

Centralized pipeline supply of high-purity nitrogen, oxygen, or argon for electronic manufacturing, welding shielding, and analytical instrumentation.

Deep Cryogenic Treatment

 

Material stabilization, stress relief, and wear-resistance enhancement for alloy steels, cutting tools, gears, and precision engine components.

Superconducting & Physics Research

Cooling baths and cryogenic shielding jackets for superconducting magnets, particle accelerators, and infrared detectors.

 

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

 

Customization Options

Port & Valve Configuration: Selection of CGA standard fittings (CGA-295, CGA-580), DIN, or ISO flange connections tailored to regional distribution requirements.

 

Pressure Rating Customization: Adjustable pressure regulator settings and dual relief valve configurations matched to specific pipeline delivery pressure demands.

 

OEM Branding & Finishes: Custom exterior color powder coating, private-label nameplates, laser-etched serial numbers, and customized export crating.

 

Structural Adaptations: Integration of specific caster wheel assemblies, lifting lug placements, telemetry sensor ports, and level-gauge signal output transmitters (4-20mA or HART).

 

Quality & Compliance

Production processes adhere strictly to pressure vessel manufacturing standards. Every batch undergoes rigorous quality validation prior to dispatch:

1

Vacuum Integrity Testing

100% helium mass spectrometer leak detection on all welded joints and vacuum jackets.

2

Pressure Testing

Hydrostatic and pneumatic pressure testing conducted at 1.25 to 1.5 times the maximum allowable working pressure (MAWP).

3

Material Traceability

Positive Material Identification (PMI) on all stainless steel plates and piping components to verify chemical composition compliance.

4

Certifications

Manufactured in compliance with ISO 9001 quality management systems, with pressure vessels meeting ISO 21029, CE/PED directive standards, or DOT-4L specifications upon request.

 

 

Our Certificate

 

productcate-1-1
productcate-1-1
productcate-1-1
productcate-1-1

 

 

FAQ

 

Q: What is the expected vacuum retention period before re-evacuation is required?

A: Dewars are fabricated using high-vacuum getter materials and multi-layer insulation systems designed to maintain operational vacuum levels for 5 to 8 years under normal operating conditions. Vacuum ports are permanently sealed and pinch-welded following high-temperature bake-out.

Q: Can these dewars be used for liquid oxygen (LOX) and liquid argon (LAr) as well as liquid nitrogen?

A: Yes. Units designated for oxygen service undergo strict degreasing and chemical cleaning processes to remove all hydrocarbon residues in accordance with oxygen-clean standards, preventing combustion risks.

Q: What is the difference between vertical storage dewars and horizontal transport dewars?

A: Vertical dewars (DPL series) feature built-in pressure buildup coils designed for continuous gas withdrawal and high flow rates. Horizontal units or standard liquid cylinders are engineered for lower center-of-gravity stability during over-the-road transport.

Q: How do you prevent vacuum loss during ocean freight shipping?

A: Each container is shipped with protective shock-absorbing timber blocking, sealed outer containment, and nitrogen holding pressure inside the inner vessel to prevent contamination and maintain structural stability during transit.

Q: Are replacement parts such as pressure regulators and safety valves readily available?

A: Yes. All internal and external valves, regulators, and gauges utilize standard industrial NPT or metric thread connections, allowing for straightforward replacement using globally available maintenance components.

Q: What documentation is provided with each shipment?

A: Shipments include Material Test Reports (MTRs) for pressure-retaining components, ASME or PED pressure vessel inspection certificates, helium leak test reports, and operation/maintenance manuals.

As one of the most professional cryogenic dewar manufacturers and suppliers in China, we're featured by quality products and good price. Please rest assured to buy advanced cryogenic dewar in stock here from our factory. We also accept customized orders.

210L Cryogenic Dewar, cryogenic dewar, 499L Cryogenic Dewar