Bag filter elements are a lower cost alternative to cartridge-style filters. They are used to filter sand, rust, and pipe-scale from plant process waters; metal shavings and wear particles from recycled cutting, quenching, flushing and hydraulic oils and coolants; and to filter contaminants that can plug nozzles in spray systems.
All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
Return filters catch all debris generated by the system’s components and are designed to be the last component that fluid passes before returning to the system reservoir. The location of a return filter allows for much lower pressure ratings and helps reduce costs.
Off-line or recirculating filters are completely independent of a machine's main hydraulic system. This filter configuration is sometimes called kidney loop, recirculating, or auxiliary filtration.
Search Logic:
All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
Full-flow filters prevent contaminated fluids from bypassing the filter element and contaminating the system. All of the fluid that enters the unit passes through the filtering element. Resistance to flow increases as the filter element becomes contaminated.
Proportional or partial-flow products filter only a portion of the fluid that flows through a Venturi throat during each cycle. Constant recirculation through the system eventually causes all of the fluid to pass through the filter element.
Search Logic:
All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
Filtration grade (micron rating, Beta ratio) describes the ability of a fluid filter to remove contaminants by particle size. Machinery manufacturers may accept the Beta ratio, but refrain from using this information to identify or specify their filters. Unlike fluid filters, air filters are not rated by micron size.
Search Logic:
User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
Reverse osmosis is a membrane-separation process that uses synthetic membranes to extract purified water from wastewater. These synthetic membranes are permeable to water molecules, but relatively non-permeable to contaminants.
Nano filtration is a pressure-related process, which separates molecules based on size. It is used mainly in water purification processes such as water softening, de-coloring, and micro-pollutant removal. Nano filtration is also used to remove specific components such as coloring agents.
Micro filtration can remove particles as small as 0.1 – 10 µm.
Search Logic:
All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
Products are rated for use in the manufacturing of semiconductors. High-purity process fluids, gases, and water used in the semiconductor manufacturing process require the highest quality filters to increase production yields, to remove particulate and other impurities, and to increase the life of the fluids used.
All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
Chemical filtration products are rated for use with chemicals. This includes ratings for general chemical heating, and for corrosive chemicals such as acids and solvents.
All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
Activated carbons are made of a variety of materials, the most common of which are bituminous coal and lignite. They have specific properties that are a function of the material source and the mode of activation. Property standards are also useful in specifying activated carbon for a specific application. Granular carbons from bituminous coal and lignite are used mainly in wastewater treatment applications. Granulated, activated carbon can also be produced by roasting organic material.
Diatomaceous earth (DE) is a naturally-occurring mineral derived from the microscopic, fossilized remains of marine diatoms. DE has high absorption, low bulk density, and high brightness.
Cellulose is made from plant fibers. Because it is a natural material, its fibers are rough in texture and varied in both size and shape. These characteristics create a higher restriction to the flow of fluids compared to synthetic media. Cellulose types include cellulose acetate, nitrocellulose or cellulose nitrate, and regenerated cellulose.
Ceramic materials are made of nonmetallic minerals (such as clay) that have been permanently hardened by firing at high temperatures. Most ceramics resist both heat and chemicals.
Cotton is a highly-efficient filtration media because its fibers are irregularly shaped and have good absorption properties. Cotton filters are often a good choice because they provide increased tenacity under wet conditions.
Glass fibers are completely-incombustible inorganic fibers. They have a high tensile strength in relation to their weight and dimensional stability. Glass fibers do not stretch or shrink. They do not absorb water and resist mildew, deterioration, and decay.
Ion exchange is a process that involves two similar applications of one technology. The first application is water softening, a process that removes ions from water and replaces them with sodium ions and chloride ions. The second application is deionization, a process that removes ions from water and replaces them with H+ and OH- ions which can combine to form water.
Ion exchange filters are used in residential applications to reduce hardness or improve the taste of water. They are also used to reduce deposits and scale from water with a high level of hardness. Deionization is often used when extremely pure water is required.
Nylon is a commonly-used, general-purpose material that comprises several grades of polyamides. Nylon is tough, resistant, and has good pressure ratings. Nylon membranes are compatible with most solvents, both organic and aqueous. Use with strong acids, 70% ethanol, methylene chloride, or dimethylformamide (DMF) is not recommended.
Polyethersulfones (PES) are high-performance polymers that are similar to polycarbonates, but much more heat-resistant. Because PES resists water and steam, it is used to make products that must be sterilized between uses (e.g., cookware, medical instruments).
Polyester is a manufactured product whose fibers are long-chain, synthetic polymers which, by at least 85% per weight, are composed of an ester of a substituted aromatic carboxylic acid, including but not restricted to substituted terephthalic units.
Polypropylene (PP) is a thermoplastic material which exhibits excellent cold flow, bi-axial strength, and yield elongation properties. PP is similar to PVC, but can be used in exposed applications because it resists UV, weathering, and ozone.
PTFE is an insoluble compound that exhibits a high degree of chemical resistance and a low coefficient of friction. It is sometimes marketed in proprietary classes of materials, such as Teflon® (DuPont Dow Elastomers).
Polyvinylidene fluoride (PVDF) is a melt-processable fluoropolymer that provides better strength and lower creep than other fluoropolymers. PVDF has good wear resistance and excellent chemical resistance, but does not perform well at elevated temperatures. Common brand names include Kynar® (Elf AtoChem).
Polyvinylidene chloride (PVDC) can be made directly from ethylene and chlorine or by the further chlorination of vinyl chloride with the subsequent removal of hydrogen chloride by alkali treatment. Vinylidene chloride is polymerized in suspension or emulsion processes, using free-radical initiators. Because of its low permeability to water vapor and gases, PVDC is ideal for food packaging. Copolymers of vinylidene chloride and other monomers are also marketed.
Polysulfone (PSU) is a thermoplastic polycondensate used in electric connectors. It has high strength, good toughness, good dielectric strength, and dimensional stability. PSU is sold under the trade name Ultrason® (BASF Aktiengesellschaft).
All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
Aluminum is a bluish, silver-white, malleable, ductile, light, trivalent, metallic element that has good electrical and thermal conductivity, high reflectivity, and resistance to oxidation.
Steel is a commercial iron that contains carbon in any amount up to about 1.7 percent as an essential alloying constituent. It is malleable under suitable conditions, and is distinguished from cast iron by its malleability and lower carbon content.
Teflon® refers to a class of fluoropolymer resins used for a wide variety of commercial applications. They are highly-resistant to temperature, chemical reaction, corrosion, and stress-cracking. Teflon is a registered trademark of DuPont Dow Elastomers.
All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
The pressure across the filter changes as the element becomes dirty. High delta P indication provides local indication that the element needs to be replaced.
Duplex transfer valves direct flow to one or two separate filters, permitting continuous uninterrupted filtration even during filter element change-out.
Spin-on (canister) filters are common to both the automotive and mobile markets. Their design prohibits an operator from running a system without an element (canister) in place.
Other unlisted, specialized, or proprietary features.
Search Logic:
All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
