Techniguard B-Series Bendable Vacuum Jacketed Pipe (VJP)

High-Efficiency, Configurable Vacuum Insulated Pipe

Techniguard R-Series bendable vacuum jacketed pipe is an effective, cost-efficient flexible vacuum insulated pipe designed to transfer liquid cryogens from a bulk storage tank to a point of use. With the additional new configurations and our revised bayonets it's even easier to connect different sized bendable and rigid pipe in the same system. And the new B-Series heat leak performance is now even better where it counts, when you bend it!

Techniguard B-Series Features

• Simplifies system layout requirements

  — Flexibility reduces the necessity for precise system layout measurements.
  

• Easy Installation

  — Bendable piping requires less precise layout measurements than rigid pipe.  No welding or refitting in the field required. It's even easier to install than foam covered pipe!
  

• Reroute/reuse system

  — Flexibility allows much or all of a system to be reused if use-point locations are changed, i.e. plant layout is changed.  You can also add to the existing system without major rework expenses.
  

• Lower shipping costs

  — Flexibility allows cryogenic pipe systems to be coiled and crated for shipment via motor or air freight.  The need for expensive dedicated trucks is eliminated.  Overseas shipment is no longer cost prohibitive.
  

• Rugged construction for virtually maintenance-free operation

• Liquid nitrogen, carbon dioxide, argon, and hydrogen ready.

  Liquid oxygen and helium options are available.
  

All this with only a modest loss in performance versus our R-Series VJP.

Flexibility and cost savings are the factors in considering the use of a Techniguard B-Series vacuum jacketed pipe over traditional rigid pipe in a vacuum insulated system. When a low cost rapid installation is of primary concern, and insulative qualities are required to prevent excessive loss of product, bendable pipe is a good alternative to rigid vacuum insulated pipe. Techniguard B-Series bendable pipe's advantages over more traditional rigid Vacuum Jacketed Pipe (VJP) can translate into cost savings to the customer along with improved system options for growing plant operations.

You can learn more about the trade-offs between rigid and bendable pipe in the article from the Summer 2006 issue of Cold Facts on Flexible Transfer Hoses for Cryogenic Fluids.

 A wide variety of options are available to meet your specific needs including:

• Lengths up to 60 feet (19 meter)
• Choice of external covering to best meet your application needs
• Choice of end connections
• ASME B31.3 and liquid oxygen certification available.

Suggested Applications

Techniguard B-Series Bendable Vacuum Insulated Pipe can be used in any situation where liquid nitrogen needs to be transferred from a bulk storage tank to any number of user points. The B-Series Techniguard is well suited for any of the following installations:

• Start-up operations

• Operations where substantial plant growth is anticipated

• Laboratories where future rerouting of cryogenic pipe system may be necessary

• New product launch facilities that need to be brought on line quickly

• Economical replacement of old, inefficient (leaky) LN2 piping

By its flexible nature, bendable pipe may be used in a variety of applications not possible for rigid pipe, such as the filling of MRI magnets from portable dewars and the connection of liquid nitrogen food freezers and deflashers to liquid bulk storage tanks.

Download Techniguard B-Series Sales Information

System design

Technifab offers a full line of other components from valves, phase separators, and custom cryogenic equipment to meet your cryogenic system needs. Regardless of the size, complexity, or location you envision, Technifab can design the system right for your installation. And if you need help installing your system we can arrange that too.

For more information or to request a cost/thermal performance analysis of your plant's cryogenic pipe system or a quote please contact us.

Pipe Construction

The pipe is constructed of convoluted inner and outer tubing.  The inner tube serves as the cryogen carrier. The outer tube contains the vacuum jacket. The inner tube is mechanically insulated with multi-layered super-insulation (MLS).  The MLS consists of alternating layers of reflective foil and non-conductive spacer material.  The insulated inner tube is loaded into the outer jacket. The space between the two lines is evacuated to the highest industry standards. The vacuum annulus contains appropriate getter materials to adsorb out-gassed molecules, thereby improving the vacuum.

Pipe Joints

Sections of Techniguard Bendable Pipe are connected via vacuum insulated bayonet connectors. These connections provide a frost-free joint between cryogenic lines.  Bayonet connections simplify installation by eliminating the need for threaded or welded field joints and the associated foam insulation or wrapping.

Techniguard Specifications for Bendable Pipe

Techniguard B-Series VJP Specifications
	Inner Diameter in Inches (mm)	Available Outer Coverings	Outside Diameter in Inches (mm)	MAWP in PSIG (kPa)	Minimum Bend Radius in Inches (cm)
B50	1/2 (13)	Heat Shrink, Armor, Braided	1-3/4 (44), 2 (51)	200 (29)	10 (25)
B65	5/8 (16)	Heat Shrink, Armor	2-1/4 (57), 2-1/2 (64)	200 (29)	15 (38)
B100	1 (25)	Heat Shrink, Armor	2-5/8 (67), 3 (76)	150 (22)	15 (38)
B125	1-1/4 (32)	Heat Shrink, Braided	3-1/2 (89)	150 (22)	20 (51)
B150	1-1/2 (38)	Braided	4 (100)	150 (22)	20 (51)
B200	2 (51)	Braided	5 (130)	150 (22)	30 (76)

Quality Assurance

Techniguard Vacuum Insulated Pipe and connections are fully guaranteed to be free of defects and are backed by a 3-year warranty.