At HL Cryogenics, we know moving liquid helium is about as tough as thermal management gets. That’s why we focus on stopping heat in its tracks with our Vacuum Insulated Pipe technology. Liquid helium sits at just 4.2K, so even the tiniest bit of heat sneaking in can cause major boil-off. Picking the right cryogenic pipe isn’t just a detail — it’s essential for any research lab or industrial site that wants to do things right.
Every Vacuum Insulated Pipe we make packs a multi-layer insulation system inside a high-vacuum space, blocking heat transfer by conduction, convection, and radiation. That keeps the cold right where you need it, even across long runs. To hold that extreme vacuum, we use our own Dynamic Vacuum Pump System. It constantly monitors and refreshes the vacuum, fighting off leaks and outgassing that slowly break down passive systems. Honestly, passive insulation just can’t keep up, especially in harsh places like aerospace test sites or high-energy physics labs.
Need something flexible? For applications like MRI cooling or semiconductor fabrication, we offer our Vacuum Insulated Flexible Hose. It’s built with a stainless steel bellows core and a rugged vacuum jacket, so you get the same thermal protection as a rigid line, but with the flexibility to handle vibration and thermal contraction. That makes a huge difference where precision matters.
Table of Contents
1. Advanced Thermal Insulation
2. Active Vacuum Management
3. Precision Flow & Phase Control
4. Flexible Systems & Compliance
● Advanced Thermal Insulation
We’ve also tackled the usual headaches with valves. Our Vacuum Insulated Valve keeps the vacuum barrier right through the valve body, so you don’t get frost buildup or stem-seal problems like with standard valves. That means every connection stays cold and secure, which is key for keeping liquid helium in its sub-cooled state.
To keep your cryogenic system running smooth, our Vacuum Insulated Phase Separator vents off flash gas and keeps the pressure steady. This way, your system delivers a steady stream of pure liquid, which is crucial for things like satellite fueling and sensitive physics experiments. For local storage, our Mini Tank connects seamlessly to the main pipe with a custom cryogenic hose, keeping the vacuum seal unbroken from start to finish.
We don’t cut corners on quality. Every pipe and hose assembly passes rigorous leak detection and non-destructive tests, meeting top global safety standards like ASME and CE. In industries like LNG distribution or semiconductor manufacturing, even a small extra heat leak can cost thousands. That’s why we use special gettering materials to soak up stray molecules and keep the vacuum strong for the long haul.
● Active Vacuum Management
By combining our Dynamic Vacuum Pump System, Vacuum Insulated Valve, and Phase Separator, we give you a setup that moves liquid helium efficiently and keeps costs down. Our Mini Tanks and Flexible Hoses let us handle both mobile and fixed jobs with precision.
No matter if you’re running a massive LNG terminal or a high-tech lab, HL Cryogenics stays ahead in vacuum insulation. We deliver the durability and thermal accuracy you need for the toughest cryogenic work out there. Reach out to HL Cryogenics today — let’s talk about what you need, and our team will help you build a custom cryogenic system that raises your performance and keeps your operation safe and efficient.
● Operational Safety Managed by Valve and Valve Box
The flow and pressure of cryogenic liquids within the HL Cryogenic vacuum jacketed pipe system are regulated using specially engineered HL Cryogenic valves. These components are designed to operate reliably under ultra-low temperatures and rapid thermal transitions.
To further enhance system safety and accessibility, each HL Cryogenic valve is housed inside an insulated HL Cryogenic valve box. The valve box protects the valve from moisture ingress, reduces frost buildup, and enables technicians to perform inspections and adjustments without disrupting the thermal balance of surrounding areas.
This compact, modular configuration also aligns well with the strict spatial limitations common in semiconductor packaging plants and cleanroom environments.
● Precision Flow & Phase Control
We build our Vacuum Insulated Valve with a special thermal break, so the actuator and stem stay at room temperature—even when the valve’s handling liquid helium or nitrogen at freezing-cold levels. This keeps the valve running smoothly and stops ice from messing with the seals or causing things to jam up. When we tie the Vacuum Insulated Valve straight into the vacuum-jacketed network, we cut out the big heat leaks you get with old-school foam insulation.
Long cryogenic piping runs into another problem: two-phase flow. To keep that under control, we use the Vacuum Insulated Phase Separator. It vents off the unwanted gas that forms as the liquid moves through the line, keeping delivery pressure steady. That way, whether you're fueling up a satellite or running a semiconductor lithography tool, your equipment gets a reliable, dense stream of liquid—just what you need for smooth operation.
● FAQS
Since 1992, HL Cryogenics has specialized in the design and manufacturing of high-vacuum insulated cryogenic piping systems and related support equipment, tailored to meet diverse customer needs. We hold ASME, CE, and ISO 9001 certifications, and have provided products and services to many well-known international enterprises. Our team is sincere, responsible, and committed to excellence in every project we undertake.
Vacuum Insulated/Jacketed Pipe
Vacuum Insulated/Jacketed Flexible Hose
Phase Separator / Vapor Vent
Vacuum Insulated (Pneumatic) Shut-off Valve
Vacuum Insulated Check Valve
Vacuum Insulated Regulating Valve
Vacuum Insulated Connectors for Cold Boxes & Containers
MBE Liquid Nitrogen Cooling Systems
Other cryogenic support equipment related to VI piping — including but not limited to safety relief valve groups, liquid level gauges, thermometers, pressure gauges, vacuum gauges, and electric control boxes.
We are happy to accommodate orders of any size — from single units to large-scale projects.
HL Cryogenics' Vacuum Insulated Pipe (VIP) is manufactured in accordance with the ASME B31.3 Pressure Piping Code as our standard.
HL Cryogenics is a specialized vacuum equipment manufacturer, sourcing all raw materials exclusively from qualified suppliers. We can procure materials that meet specific standards and requirements as requested by customers. Our typical material selection includes ASTM/ASME 300 Series Stainless Steel with surface treatments such as acid pickling, mechanical polishing, bright annealing, and electro polishing.
The size and design pressure of the inner pipe are determined according to the customer's requirements. The size of the outer pipe follows HL Cryogenics' standard specifications, unless otherwise specified by the customer.
Compared with conventional piping insulation, the static vacuum system provides superior thermal insulation, reducing gasification losses for customers. It is also more cost-effective than a dynamic VI system, lowering the initial investment required for projects.
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Post time: Jan-19-2026
