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Filtration Table of Contents
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Filter Supplier
Cylindrical filters may be either open-faced
cylindrical axial or radial flow. Filters fabricated with
cylindrical cases appear to offer substantial advantages such
as easier mounting in circular ducts, but in practice they
have been found to have disadvantages attributable to
manufacturing difficulties, escalated costs, and increased
susceptibility to leakage. However, cylindrical filters offer
significant advantages regarding simplified gasketing and
automated filter-changing techniques. In the United Kingdom,
a “push-through filter system” has been developed that
permits changing of cylindrical filters by loading a clean
filter that has gaskets on the top and bottom filter flanges
into the filter housing tube from the “clean side,” then
pushing it through until it ejects the old contaminated
filter into the “dirty side” of a cell or glove-box. A
cylindrical filter of somewhat different design, but with
similar characteristics, has been developed in the United
States.
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