Regeneration of Fuller's Earth: Does It Make Sense?

Fuller's earth is a general term for industrially used smectite or polygorskite-sepiolite clays with a large surface area and strong absorptive, binding, gelling, thickening, and decolorizing ability.

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Allen Microfiber Filter Element Product Brief

Allen Product BriefThe Microfiber Filter Element is designed to adsorb oil from water.

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Allen Fuller's Earth Filter Element Product Brief

Allen Product BriefThe Allen Fuller's Earth Filter Element uses the inherent properties found in the palygorskite family of clays (fuller's earth) to adsorb acids and remove color from oils.

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Allen Filter Elements Product Brief

Allen Product BriefAllen Filter Elements can last several years with moderate solids loading.

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Allen Duck Cloth Filter Element Product Brief

Allen Product BriefThe Duck Cloth Filter Element is designed to be used in the adsorption of solids and moisture from solvents, diesel, jet fuel, and kerosene.

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Allen Coalescer Filter Element Product Brief

Allen Product BriefThe Coalescer Filter Element provides a cost effective particle and emulsified water removal element for hydrocarbon fluids.

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Allen Cellulose Filter Element Product Brief

Allen Product BriefThe Cellulose Filter Element is designed to remove varnish and adsorb the moisture in transformer oil, electro-hydraulic oil, lubrication oil, transmission fluid, vegetable oil, wine filtration, water & waste water filtration, and diesel fuel.

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Allen Activated Carbon Filter Element Product Brief

Allen Product BriefThe Activated Carbon Filter Element adsorption process uses forces of molecular attraction to bind soluble and gaseous chemicals to the surface of the carbon.

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Allen Activated Alumina Filter Element Product Brief

Allen Product BriefThe Activated Alumina Filter Element is used for solvent, fluoride, selenium, and arsenic adsorption as well as acid cotrol in water and waste water filtration.

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Filter Elements

Allen Filter ElementsAllen Filters, Inc. offers a variety of filter elements for each Allen system.

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Allen Filters 2009-2010 Full-Line Catalog

Allen Filters Full-Line Catalog

Environmental stewards strive to sustain natural resources and our environment by managing, overseeing, and caring for the world’s natural resources.

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Astonishing Facts About Filter Elements, Part 1

Astonishing Facts About Filter Elements, Part 1The filter industry is in a state of confusion about rating their filters. Customers want a simple way to compare filter elements so the micron ratings system was invented. A micron rating is an arbitrary value assigned to a filter by the manufacturer, not an actual measured value. It quotes a particle size without establishing the filter’s efficiency at removing that size particle.

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Transformer Oil, Part 2: Deterioration of Mineral Transformer Oil

Cover of the Transformer Oil, Part 2: Deterioration of Mineral Transformer Oil white paperMoisture contamination is one of the most obvious causes of deterioration in the insulating quality of transformer oil. This contamination can be eliminated by purification.

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Transformer Oil, Part 1: Maintenance of Mineral Transformer Oil

Cover of the Transformer Oil, Part 1: Maintenance of Mineral Transformer Oil white paperThe function of transformer oil is insulation and cooling of transformers. A transformer consists of metal, oil, and cardboard insulation. The oil is actually insulating oil and is used not only in transformers, but also in circuit breakers, capacitors, bushings, and tap changers. Insulating oil is a refined mineral oil obtained from fractional distillation of crude oil. It is free of moisture, inorganic acids, alkali, sulfur, asphalt, tar, and vegetable or animal oils.

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Concepts in Fluid Filtration

Cover for the Concepts in Fluid Filtration white paperFiltration is the separation of a fluid-solids mixture, involving passage of most of the liquid through a porous barrier that retains most of the solids contained in the mixture.

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On-Load Tap Changer Filter Systems

Cover for the On-Load Tap Changer Filter Systems white paperOn-load tap changers are used for changing the transforming ratio of power transformers without supply interruption. To reduce arcing at the contacts, the tap changer operates in a chamber filled with insulating transformer oil.

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Sustainable Electric Power for the Emerging Markets

Sustainable Electric Power for the Local CommunityLack of power impacts annual growth rates, slowing the development of new businesses and inhibiting new investment. The demand for power can lead to new investments in large-scale power projects in addition to creating markets for smaller generators of power.

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Maintenance of Phosphate Esters-Based Fluids

Maintenance of Phosphate Esters-Based FluidsPhosphate esters are polar fluids with excellent lubricating properties that can operate under extreme conditions such as electro-hydraulic compounds for steam and gas turbines, aircraft carriers, as well as steel mills and foundries. However, phosphate esters require strict control in order to extend their useful lifespan.

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