SEMIFLEX® Piping Systems

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For over 50 years Vacuum Barrier has provided innovative solutions to the problems associated with handling liquid
nitrogen.When industry required liquid nitrogen in large volume for various modern production processes, it was our products and engineering that helped firms meet their requirements practically and efficiently. A continuing commitment to research and development in cryogenic and vacuum technology has made us a pioneering force in the field and given our customers a competitive edge.

Vacuum Barrier's first automated liquid nitrogen piping system employed vacuum jacketed rigid piping. The limitation of rigid
pipe and the increasingly sophisticated demands of industry led to the development of both dynamic and sealed bendable
pipe available in OHFC Copper and Stainless Steel. SEMIFLEX® systems boast the lowest cool down and steady state heat loss of any liquid nitrogen piping system available. The Triax Liquid/Vapor Separator and Vapor Vent enhancements deliver liquid nitrogen at low pressure and in pure liquid condition.

SEMIFLEX® system configurations

In order to meet the pressure and quality requirements of various industrial applications for liquid nitrogen, Vacuum Barrier offers SEMIFLEX® liquid nitrogen in three major system configurations.

SEMIFLEX®
Both dynamic and sealed SEMIFLEX® systems deliver liquid nitrogen at bulk tank pressure (normally 25 to 125 psig) in two-phase condition. Basic SEMIFLEX® systems are commonly used in applications that simply require transfer of liquid or refrigeration.

SEMIFLEX®/Vapor vent
SEMIFLEX®/Vapor Vent systems employ a mechanical float operated device which minimizes two phase flow – maintaining liquid nitrogen in SEMIFLEX®
at storage pressure.

SEMIFLEX®/Triax/Liquid vapor phase separator
SEMIFLEX®/Triax systems deliver liquid nitrogen in pure liquid form at pressures of 1 to 10 psig. The addition of Triax pipe and Liquid /Vapor Separators completely eliminates two phase flow to use points. In this special system, all of the losses of the total system are vented to the atmosphere separately.

Pure low pressure liquid nitrogen is delivered by gravity to each use point on demand. By separating gas losses and venting them prior to liquid delivery no gaseous nitrogen passes through your
equipment. SEMIFLEX®/Triax systems are commonly used in applications where pure liquid is critical to the production processes.

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