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GRAVITY FILTERS
Model HGF
Model DBGF
Model LGF
Model LF (Li'l Fil)
AIR VACUUM FILTERS
Model SCF
Model HVSCF
Model FLA
LIQUID VACUUM
FILTERS
Model LVF
PRESSURE FILTERS
Model APF
SLUDGE FILTERS
Model SF
ABSORPTION FILTERS
Model ABS
MAGNETIC
SEPARATORS
Model MSI
Model MSI Video
CENTRIFUGES
Model ACF
Model ASF
Model MCF
EVAPORATORS
Model TEB
VACUUM
DISTILLATION UNIT
Model VDU
Model VDU Video
OIL-WATER
SEPARATION
Model OWS
Model DTOS
AUXILIARY
EQUIPMENT
Model SMR
Model SDU
ALUMINUM ROLLING AND DRAWING
Cold Rolling Coolants
Aluminum Wire Drawing
METAL GRINDING
Roll Grinding Coolants
Centerless Grinding
Parts Grinding Coolants
INDUSTRIAL
WASTEWATER
Spent Coolants
Process Wastewaters
MACHINING
Machining Coolants
Honing Coolants
Gun Drilling Coolants
METAL FINISHING
Alkaline Cleaners
Acid Pickling Solutions
Electroplating Rinsewater
PAINT SLUDGE
Paint Sludge Dewatering
PHOSPHATING
Sodium Phosphate Solns
Iron Phosphate Solutions
STEEL ROLLING
Cold Rolling Coolants
Stainless Steel Rolling Oils
WIRE DRAWING
(NON-FERROUS)
Continuous Cast
Wire Drawing Emulsions
Annealer Quenchants
Spent Emulsion Disposal
WIRE DRAWING
(FERROUS)
Wire Drawing Emulsions
SST Drawing Oils
Annealer Quenchants
Dry Soap Rinsewaters
The following is a partial list of filtration applications for which Filtertech equipment has been successfully employed.
Aluminum Rolling
Industry Group 335: Rolling, Drawing, And Extruding Of Nonferrous
SIC Code: 3353 Aluminum Sheet, Plate, and Foil
Establishments primarily engaged in flat rolling aluminum and aluminum base alloy basic shapes, such as sheet, plate, and 
foil, including producing welded tube. Also included are production of similar products by continuous casting. The hot rolling process uses a water-soluble coolant that requires continuous flat bed air-vacuum filtration to eliminate staining of the sheet. The cold rolling process uses a kerosene-based rolling oil which requires periodic recovery by vacuum distillation to remove heavy hydrocarbon oils and greases from the oil.
PRODUCTS
- Coils, sheet aluminum
- Foil, plain aluminum
- Plates, aluminum
- Sheets, aluminum
- Tubes, welded: aluminum
Aluminum Drawing
Industry Group 335: Rolling, Drawing, And Extruding Of Nonferrous
SIC Code: 3355 Aluminum Rolling and Drawing
Primarily engaged in rolling, drawing, and other operations resul
ting in the production of aluminum ingot, including extrusion ingot, aluminum and aluminum-base alloy basic shapes, such as rolled and continuous cast rod and bar. Primarily engaged in producing aluminum powder, flake, and paste are classified in Industry 3399, and those producing aluminum wire and cable from purchased wire bars, rods, or wire are classified in Industry 3357. The continuous cast rod and wire drawing processes typically use a straight drawing oil or water-soluble coolant, depending on the application. To prevent build up of contaminants in the coolant, it must be continuously filtered. For viscous oils a centrifuge operating on a bypass basis provides the required clarification.
PRODUCTS
- Bars, aluminum rolled
- Cable, aluminum made in rolling mills
- Coils, wire aluminum made in rolling mills
- Extrusion ingot, aluminum made in rolling mills
- Ingot, aluminum made in rolling mills
- Rails, aluminum rolled and drawn
- Rods, aluminum rolled
- Slugs, aluminum
- Structural shapes, rolled aluminum
- Wire, aluminum made in rolling mills
Roll Grinding
Industry Group 354: Metalworking Machinery And Equipment
SIC Code: 3547 Rolling Mill Machinery and Equipment
Primarily engaged in manufacturing rolling mill machinery and processing equipment for metal production, such as cold 
forming mills, structural mills, and finishing equipment. Mill rolls are frequently reworked and polished with a roll grinder. A water- soluble coolant is used which requires continuous filtration to maintain a very low contaminant level. Typically a gravity type indexing media filter is used. In some cases media filtration is coupled with magnetic separation to reduce the load on the filter. Too high a solids level in the coolant will result in increased wheel wear as well as poor finish quality.
PRODUCTS
- Bar mills
- Billet mills
- Blooming and slabbing mills
- Cleaning lines, electrolytic (rolling mill equipment)
- Cold forming type mills (rolling mill machinery)
- Ferrous and nonferrous mill equipment, auxiliary
- Finishing equipment, rolling mill
- Galvanizing lines (rolling mill equipment)
- Hot strip mill machinery
- Mill tables (rolling mill equipment)
- Picklers and pickling lines, sheet and strip (rolling mill equipment)
- Pipe and tube mills
- Plate rolling mill machinery
- Rod mills (rolling mill equipment)
- Roller levelers (rolling mill machinery)
- Rolling mill machinery and equipment
- Rolls for rolling mill machinery, machined
- Steel rolling machinery
- Straightening machinery (rolling mill equipment)
- Structural mills (rolling mill machinery)
- Tube mill machinery
Centerless Grinding
Industry Group: Centerless grinding is used in multiple Industrial Classifications
SIC Code: Includes multiple codes in various Industrial Groups.
Primarily used f
or fabrication of cylinders, shafts and other miscellaneous parts. Centerless grinders are typically inline feed units which do not require centering chucks. Typically the grinding process is cooled and lubricated with a water-soluble coolant. This coolant is kept clean with a gravity type indexing media filter. This reduces the build up of solids in the coolant sump.
PRODUCTS
- Cylinders
- Shafts
- Pins
- Discs
- Other miscellaneous parts
Parts Grinding
Industry Group: Parts grinding is used in multiple Industrial Classifications
SIC Code: Includes multiple codes in various Industrial Groups.
Process of grinding various shaped parts using techniques such as surface, jig, OD/ID grinding as well as other methods. Materials included steel alloys, 
carbides, ceramics and other exotic coatings. Many grinding processes require extremely fine finishes. Water-soluble coolants are used to extend wheel life and improve tolerance control. To prevent build up of solids, continuous filtration of the coolant is recommended. Depending on system size either a gravity filter or vacuum filter would be used.
PRODUCTS
- OD grinding
- ID grinding
- Flat surfaces
- Jig grinding
Lapping
Industry Group: Lapping is used in multiple Industrial Classifications
SIC Code: Includes multiple codes in various Industrial Groups.
Lapping is a free abrasive machining process. An abrasive compound in a slurry is applied to a lap (tool). The work part is pl
aced on top of the lap and moved to cause cutting/material removal at a controlled rate. This produces finished components without introducing stresses and heat damage associated with other processes such as grinding. By comparison, fine grinding would be considered a roughing operation to be performed before lapping. In some applications the lapping compound is recovered by separating the abrasive from the carrier fluid. Filtration of the slurry can be accomplished with a gravity type indexing media filter.
PRODUCTS
- Rotating seals
- Parts with flat surfaces
- Very close tolerances
- Minimal heat distortion
Spent Coolant and Wastewater Disposal
Industry Group: Spent Coolant and Wastewater Disposal is used in multiple Industrial Classifications
SIC Code: Includes multiple codes in various Industrial Groups.
In metalworking applications, water-soluble coolants are frequently used. Over time the coolant will lose its effectiveness and require replacement. The spent coolant must then be disposed of within environmental regulations and guidelines. One method of disposal is evaporation with a wastewater evaporator in which the water phase is boiled off and discharged to atmosphere while the remaining oil concentrate (usually less than 10%) is shipped off-site for disposal or recovery.
SOLUTIONS
- Spent drawing emulsions
- Spent quenchants
- Spent machining coolants
- Process wastewaters
- Other miscellaneous aqueous wastes
Machining
Industry Group: Machining is used in multiple Industrial Classifications
SIC Code: Includes multiple codes in various Industrial Groups.
Machining operat
ions include drilling, tapping, reaming, gun drilling, cross drilling and tapping, deburring, knurling, broaching, milling, honing, slotting, turning, stamping, etc. Many of these processes require the use of water-soluble coolants, emulsions and cutting and honing oils. Emulsion systems require continuous filtration to prevent accumulation of solids. This is typically accomplished using a gravity type indexing media filter, liquid vacuum filter or air vacuum filter. The choice of filter is dependent on the size of the system being serviced.
PROCESSES
- Drilling
- Tapping
- Reaming
- Gun drilling
- Cross drilling and tapping
- Deburring
- Knurling
- Broaching
- Milling
- Honing
- Slotting
- Turning
- Stamping
Electroplating
Industry Group 347: Coating, Engraving, And Allied Services
SIC Code: 3471 Electroplating, Plating, Polishing, Anodizing, and Coloring
In the process of electroplating there are in many mechanical as well as chemical pre-treatment processes such as electrolytic cleaning and pickling which must be done to prepare 
the surface for plating. Typically there are rinse stations between these processes which prevent cross contamination of the solutions as well as cleaning the part of residual plating chemicals at the end of the electroplating process. Continuous filtration of these solutions helps to remove sludges which form. This helps to improve their performance and extend the useful life of the bath. Due to the extremely high cost of plating baths it is crucial to keep them clean and free of sludge. With extremely fine sludges that form in plating baths it is often best to filter the solutions using a centrifuge. Other pre-treatment solutions may work fine with standard gravity filtration or an automatic pressure filter if fumes are a concern.
PROCESS SOLUTIONS
- Alkaline (Electrolytic) cleaning
- Acid (Activation) pickling
- Strike solutions
- Electroplating solutions
- Rinsewaters
Spray Paint Booths
Industry Group 172: Spray Painting and Finishing
SIC Code: 172103 Spray Painting and Finishing
In automotive paint booths the overspray is collected in water curtains. This contaminated water is then treated to remove the paint particles. This is typically done by concentrating the solids in a Palin unit with the concentrated sludge discharging into a two stage vacuum-assisted sludge filter for final dewatering and disposal of the sludge. The special design of the sludge filter causes the sludge to be dry enough for landfilling.
Phosphating
Industry Group 347: Coating, Engraving, And Allied Services
SIC Code: 3479 Coating, Engraving, and Allied Services, Not Elsewhere Classified
It is a treatment on a steel surface by a chemical solution containin
g metal phosphate and phosphoric acid as main ingredients to form an adherent corrosion inhibiting layer that serves as a good base for subsequent paint coating. Phosphate solutions become contaminated over time and require continuous filtration to avoid replacement. Due to the corrosive nature of the phosphate solution an enclosed automatic pressure filter is recommended.
The three typical methods of phosphating are:
- Conventional dip method
- Conveyorized spray method
- Conveyorized dip-spray method
SOLUTIONS
- Iron phosphate
- Sodium phosphate
Steel/Stainless Steel Cold Rolling
Industry Group 331: Steel Works, Blast Furnaces, And Rolling
SIC Code: 3316 Cold-Rolled Steel Sheet, Strip, and Bars
Primarily engaged in: (1) cold-rolling steel sheets and strip from purchased hot-rolled sheets; (2) cold-drawing steel bars and steel shapes from purchased hot-rolled steel 
bars; and (3) producing other cold finished steel. Primarily engaged in the production of steel including hot-rolled steel sheets and further cold-rolling such sheets are classified in Industry 3312. In cold-rolling steel sheets a water-based coolant is used and for stainless steel a light oil is typical. These coolants require continuous filtration to minimize build-up of solids which could cause defects and staining on the sheet finish. For the larger flowrates associated with steel rolling an air vacuum filter is typically used. The following products are not made in hot-rolling mills.
PRODUCTS
- Cold-finished steel bars
- Cold-rolled steel strip, sheet, and bars
- Corrugating iron and steel, cold-rolled
- Flat bright steel strip, cold-rolled
- Razor blade strip steel, cold-rolled
- Sheet steel, cold-rolled
- Wire, flat: cold-rolled strip
Nonferrous Wire Drawing
Industry Group 335: Rolling, Drawing, And Extruding Of Nonferrous
SIC Code: 3357 Drawing and Insulating of Nonferrous Wire
Primarily engaged in drawing, drawing and insulating, and insulating wire and cable of nonferrous (copper, aluminum, brass, etc.) metals from purchased wire bars, rods, or wire. Also included are establishments primarily engaged 
in manufacturing insulated fiber optic cable. Primarily engaged in manufacturing glass fiber optic materials are classified in Industry 3229, and those manufacturing fabricated wire products from purchased wire are classified in Industry 3496. When drawing nonferrous wire, a water-soluble emulsion is often used. This emulsion must be continuously filtered to eliminate the fines which would increase die wear and reduce die and capstan life. Typically gravity filters and vacuum filters are used for these applications. For aluminum wire drawing in a viscous oil, an automatic centrifuge operating on a bypass basis is used.
PRODUCTS
- Apparatus wire and cord made in wiredrawing plants
- Automotive and aircraft wire and cable, nonferrous
- Cable, nonferrous bare, insulated, or armored-mfpm
- Coaxial cable, nonferrous
- Communications wire and cable, nonferrous
- Cord sets, flexible made in wiredrawing plants
- Fiber optic cable
- Magnet wire, insulated
- Shipboard cable, nonferrous
- Signal and control cable, nonferrous
- Weatherproof wire and cable, nonferrous
- Wire cloth, nonferrous: made in wiredrawing plants
- Wire screening, nonferrous: made in wiredrawing plants
- Wire, nonferrous: bare, insulated, or armored
Continuous Cast Rod
Industry Group 335: Rolling, Drawing, And Extruding Of Nonferrous
SIC Code: 3351 Rolling, Drawing and Extruding of Copper
Establishments primarily engaged in rolling, drawing, and extruding copper, brass, bronze, and other copper base alloy basic
shapes such as plate, sheet, strip, bar, and tubing. These processes include copper rod manufacturing in which molten copper is formed into rod through a rolling process. This process typically uses a water-based emulsion for cooling and lubrication of the rolling stands. This emulsion must be continuously filtered to eliminate the fines which would increase die wear and reduce die and capstan life. Typically vacuum filters are used for these applications.
- Bands, shell copper and copper alloy-made in copper rolling mills
- Bars, copper and copper alloy
- Brass rolling and drawing
- Bronze rolling and drawing
- Cartridge cups, discs, and sheets copper and copper alloy
- Cups, primer and cartridge copper and copper alloy
- Extruded shapes, copper and copper alloy
- Pipe, extruded and drawn: brass, bronze, and copper
- Plates, copper and copper alloy
- Primer cups, copper and copper alloy
- Rails, rolled and drawn: brass, bronze, and copper
- Rods, copper and copper alloy
- Rolling, drawing, and extruding of copper and copper alloys
- Rotating bands, copper and copper alloy
- Sheets, copper and copper alloy
- Shell discs, copper and copper alloy
- Slugs, copper and copper alloy
- Strip, copper and copper alloy
- Tubing, copper and copper alloy
- Wire, copper and copper alloy made in brass mills
Ferrous Wiredrawing
Industry Group 331: Steel Works, Blast Furnaces, And Rolling
SIC Code: 3315 Steel Wiredrawing and Steel Nails and Spikes
Primarily engaged in drawing wire from purchased iron or steel rods, bars, or wire and which may be engaged in the further manufacture of products made from wire; establishments primarily engaged in 
manufacturing steel nails and spikes from purchased materials are also included in this industry. Rolling mills engaged in the production of ferrous wire from wire rods or hot-rolled bars produced in the same establishment are classified in Industry 3312. Establishments primarily engaged in drawing nonferrous wire are classified in Industry Group 335. Wet wiredrawing is done using an oil-water emulsion which requires continuous filtration to remove iron particulates from the emulsion. Depending on the size of the emulsion system either a gravity filter or vacuum filter is typically used.
PRODUCTS
- Barbed and twisted wire: made in wiredrawing plants
- Baskets, steel: made in wiredrawing plants
- Brads, steel: wire or cut
- Cable, steel: insulated or armored
- Chain link fencing, steel: made in wiredrawing plants
- Fence gates, posts, and fittings: steel-made in wiredrawing plants
- Form ties, made in wiredrawing plants
- Horseshoe nails
- Nails, steel: wire or cut
- Paper clips, steel: made in wiredrawing plants
- Spikes, steel: wire or cut
- Staples, steel: wire or cut
- Steel wire cages, made in wiredrawing plants
- Tacks, steel: wire or cut
- Tie wires, made in wiredrawing plants
- Welded steel wire fabric, made in wiredrawing plants
- Wire carts: household, grocery, and industrial-made in wiredrawing
- Wire cloth, steel: made in wiredrawing plants
- Wire garment hangers, steel: made in wiredrawing plants
- Wire products, ferrous: made in wiredrawing plants
- Wire, ferrous: made in wiredrawing plants
- Wire, steel: insulated or armored