Vacuum Insulated Flexible Hose

High‑Efficiency Vacuum Insulated Flexible Hose for Cryogenic Liquid Transfer

Cryogenic Transport Systems PRODUCTS Vacuum Insulated Flexible Hose

Cryogenic Flexible Hose Cryogenic Transfer Equipment High‑Vacuum Insulation Hose Industrial Gas Hose LOX/LIN/LAR/LH₂ Transfer Hose Ultra‑Low Temperature Hose Vacuum Insulated Hose Vacuum Jacketed Hose

The Vacuum Insulated Flexible Hose is a high‑performance cryogenic transfer hose designed to safely and efficiently transport ultra‑low‑temperature liquids such as liquid nitrogen, liquid oxygen, liquid argon, and liquid hydrogen. Featuring a double‑wall stainless steel structure with high‑vacuum insulation, it minimizes heat ingress, reduces liquid boil‑off, and ensures stable thermal performance during operation. The flexible design allows easy routing in confined spaces while maintaining excellent durability and leak‑tight integrity. This hose is widely used in cryogenic storage systems, industrial gas distribution, laboratory applications, semiconductor manufacturing, and any environment requiring reliable, low‑loss cryogenic fluid transfer.

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Product Overview

The Vacuum Insulated Flexible Hose is a high-performance pipeline designed for cryogenic liquid transfer, including liquid oxygen, liquid nitrogen, liquid hydrogen, liquid helium, LEG, and LNG. Its excellent thermal insulation performance and flexibility make it suitable for applications across air separation, gas processing, aerospace, electronics, superconductors, chip manufacturing, automation, food & beverage, pharmaceuticals, hospitals, biobanks, rubber, new materials, chemical, and steel industries, as well as for scientific research and low-temperature equipment systems.

Working Principle

The hose features a double-layer stainless steel tube structure with a space between layers filled with multi-layer insulation composites maintained under high vacuum. This high-vacuum, multi-layer shield design reduces heat leakage to only 0.035–0.05 times that of conventional insulated pipelines, significantly lowering liquid evaporation losses and improving energy efficiency.

Both ends of the hose are equipped with quick-connect fittings, allowing safe and low-loss connections to cryogenic tanks, Dewars, and truck pipelines.

Key Features

High-Efficiency Thermal Insulation:Heat leakage is only 3.5–5% of traditional insulated pipelines, minimizing cryogenic liquid evaporation.
Flexible Design:Small bending radius facilitates installation and operation; length can be customized according to requirements.
Strong Compatibility:Quick-connect fittings enable seamless connection to vacuum pipelines and cryogenic equipment.
Safe and Energy-Saving:Double-layer stainless steel and multi-layer insulation prevent external frosting or condensation, reducing energy waste.
Quick-Connect Fittings:Optimized for tanks and trucks, significantly reducing vaporization losses during filling and discharge.

Applications

Cryogenic Liquid Transfer:Safe, efficient transfer of liquid oxygen, nitrogen, hydrogen, helium, LEG, LNG, and other low-temperature media.
Industrial Applications:Air separation, gas processing, chemical, steel, new materials, rubber, and food & beverage industries.
Research & Laboratory Use:Superconducting systems, chip manufacturing, low-temperature experiments, and automated assembly setups.
Storage & Transportation:Safe transfer and distribution in cryogenic tanks, Dewars, cold boxes, and truck systems.

Pipe specification(mm)	Inner diameter	DN10	DN15	DN20	DN25	DN32	DN40	DN50	DN65	DN80	DN100
	Inner pipe	Φ10	Φ15	Φ20	Φ25	Φ32	Φ40	Φ50	Φ65	Φ80	Φ100
	Outer pipe	Φ34	Φ40	Φ52	Φ64	Φ84	Φ84	Φ104	Φ125	Φ150	Φ185
Working pressure	according to user needs (≤3.2 MPa)
Temperature range	‘-196℃
Liquid conducted	LN2, LCO2, LO2, LNG, LPG, LHe, LAr, LH2, LN2O
Material	SUS304
Pipe structure	Structure of high vacuum muitllayer insulation
Interlayer pressure	<0.004Pa
Pipe vacuum leak rate	<2*10-10PaL/S
Inner tube strength	according to the working pressure
air tightness	according to the working pressure
Design basis	1.According to the relevant national standards and Q/xT01-2008 standards 2. According to the user to provide low-temperature liquid piping system layout