Page 31 - CorrugatedCatalog110913Rev8LR

Jacket
A jacketed assembly consists of a “hose within a hose.” An inner or primary media-conveying hose
is enclosed or jacketed by a larger-diameter hose. The hoses are joined at each end by specially
designed fttings so that there is no media pathway between the two hoses. Jacketed assemblies are
often specifed when the primary media must be kept at either an elevated or cryogenic temperature.
Steam is often circulated through the jacket hose to keep a viscous material in the inner hose hot and
easily conveyed. A vacuum can also be pulled on the jacket hose to insulate cryogenic liquids being
conveyed in the inner hose.
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Tracer
Traced assemblies are similar in concept to jacketed assemblies in that there is an inner, smaller-
diameter hose encased by a single, larger-diameter hose. Where jacketed assemblies surround the
media with heat or cold, traced assemblies have the media surround the hose containing the heating
or cooling element. The tracer, or inner hose, may also be installed in a long “U” shaped loop within
the outer hose, with the steam inlet and outlet at the same end of the assembly.