The clogging of filtering medium of a micro screen or a vacuum filter when the holes or spaces in the media become sealed off due to grease or the material being filtered. Also, insertion of blind flanges into a pipeline for isolation purposes.



Related Terms

CELLULOSE MEDIA

A filter material made from plant fibers. Because cellulose is a natural material, its fibers are rough in texture and vary in size and shape. Compared to synthetic media, these characteristics create a higher restriction to the flow of fluids.

FATIGUED

A structural failure of the filter medium due to flexing caused by cyclic differential pressure.

ADSORBENT FILTER

A filter medium primarily intended to hold soluble and insoluble contaminants on its surface by molecular adhesion.

BUILT-IN-DIRT

Material passed into the effluent stream composed of foreign materials incorporated into the filter medium.

CONSISTENCY

The degree to which a semisolid material such as grease resists deformation. (See ASTM designation D 217.) Sometimes used qualitatively to denote viscosity of liquids.

DEPTH FILTER

A filter medium that retains contaminants primarily within tortuous passages.

EJECTOR

A device which utilizes the kinetic energy in a jet of water or other fluid to remove a fluid or fluent material from tanks or hoppers.

ABSORBENT FILTER

A filter medium that holds contaminant by mechanical means.

ADSORPTIVE FILTRATION

The attraction to, and retention of particles in, a filter medium by electrostatic forces, or by molecular attraction between the particles and the medium.

FILTRATION

The physical or mechanical process of separating insoluble particulate matter from a fluid, such as air or liquid, by passing the fluid through a filter medium that will not allow the particulates to pass through it.

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