Frequently Asked Questions
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Pressure Filtration
Go to the Pressure Filtration pageWhat is automatic backwash pressure filtration?
Automatic backwash pressure filtration is a continuous liquid filtration process in which a pressure vessel containing a permanent filter element self-cleans automatically when differential pressure across the element reaches a pre-set trigger point. The backwash cycle — typically 10 to 30 seconds — reverses flow across the element to flush captured solids to drain without interrupting filtration or process flow.
What is the difference between a backwash filter and a basket strainer?
A basket strainer is a manual device requiring a process shutdown to clean. A backwash filter is an automatic device that cleans itself in seconds without interrupting flow. Basket strainers are appropriate for low-contamination, infrequent-cleaning applications. Automatic backwash filters are appropriate for moderate-to-heavy contamination applications where cleaning would otherwise be required weekly or more frequently.
What is differential pressure in filtration?
Differential pressure (DP) in filtration is the pressure difference between the inlet and outlet of a filter element. A clean element has a low baseline DP. As solids accumulate and block pores, DP rises. Automatic backwash filters use a DP sensor to trigger the backwash cleaning cycle when DP reaches a pre-set threshold — typically 0.3 to 0.8 bar above the clean baseline.
What is the K-Optifil automatic backwash filter?
The K-Optifil is K Factor's flagship automatic backwash filter, developed in partnership with Lenzing Filtration of Austria. It uses a patented partial-backwash rotating arm mechanism that cleans a small section of the filter element at a time, maintaining continuous filtration through the rest of the element. Filtration to 1 micron is achievable. Over 100 K-Optifil systems are installed in automotive E-coat pretreatment lines globally.
What micron rating do K Factor pressure filters achieve?
The K-Optifil achieves filtration to 1 micron via filter cake formation, 3 micron with a depth filter fleece, and 5 micron with a metal fabric screen. Standard inline pressure strainers achieve 25 micron to 3,000 micron depending on screen selection. The appropriate micron rating depends on the application — contact K Factor's engineers to confirm the correct specification for your process.
Can backwash filters handle chemical and acidic process streams?
Yes. K Factor backwash pressure filters are available in 316L stainless steel, Hastelloy, Duplex stainless, and polypropylene-lined carbon steel to handle acidic, caustic, and chemically aggressive process streams. Seal materials — EPDM, FKM, PTFE, NBR — are selected for the specific fluid chemistry. The K-Optifil is rated to 120°C standard and operates continuously in chemical processing and petrochemical applications.
What is scrubber blowdown and how is it filtered?
Scrubber blowdown is the liquid waste stream generated by wet industrial air scrubbers — systems that remove acidic gases, particulate, and VOCs from exhaust stacks in chemical plants, metal finishing facilities, and power generation. The blowdown water contains captured suspended solids that must be removed before treatment or discharge. K Factor automatic backwash pressure filters are installed as the first-stage solids removal step in scrubber blowdown treatment circuits.
Does K Factor supply pressure filtration for cooling towers?
Yes. K Factor supplies automatic backwash pressure filters and inline strainer systems for cooling tower makeup water filtration and side-stream filtration of recirculating cooling water. Systems protect heat exchangers, spray nozzles, and tower packing from suspended solids fouling, reduce Legionella risk by limiting biofilm substrate, and operate continuously without manual cleaning shutdowns. Available across the US, Canada, and Gulf region.
What industries use K Factor pressure filtration systems?
K Factor pressure filtration systems serve automotive manufacturing, cooling towers and HVAC, oil and gas production, chemical processing, petrochemical refining, mining, heavy industry, pulp and paper, power generation, and municipal water treatment. The K-Optifil is particularly proven in automotive E-coat pretreatment applications with over 100 installations globally through the Lenzing Filtration partnership.
Does K Factor serve international markets for pressure filtration?
Yes. K Factor serves the United States, Canada, and the Gulf region (UAE, Saudi Arabia, Qatar, Kuwait, Bahrain, Oman) directly. Through the Lenzing Filtration partnership, K Factor's technology is available in Europe, Asia-Pacific, and Latin America. Contact K Factor at 1-289-362-6108 or sales@kfactorfilter.com to discuss supply and service arrangements for your location.
What is K Factor's 30-day free trial for pressure filtration?
K Factor's 30-day free trial makes the K-Optifil or an inline pressure strainer system available in your facility at no cost, with no purchase obligation. We assess your application, deliver the system, and commission it on-site. You run it for 30 days and evaluate performance. If the system does not meet your requirements, return it — no invoice. Available to qualifying facilities in the US, Canada, UAE, and Saudi Arabia.
What is the payback period for an automatic backwash pressure filter?
Payback periods depend on the application and incumbent technology being replaced. In cooling tower applications, payback typically occurs within 12–18 months through energy savings from improved heat transfer efficiency and reduced maintenance labour. In automotive pretreatment applications, payback is typically 6–12 months through bag filter elimination and bath life extension. In oil and gas applications, a single avoided heat exchanger cleaning event ($10,000–$50,000) often justifies the investment.
Vacuum Filtration
Go to the Vacuum Filtration pageWhat is industrial vacuum filtration?
Industrial vacuum filtration uses controlled negative pressure — generated by a vacuum pump — to draw process liquid through a filter medium at a consistent rate, even as a thick filter cake builds on the surface. Vacuum compensates for increasing filter cake resistance, maintaining consistent filtration rate and finer particle capture than gravity-driven filtration can achieve in high-sludge applications.
When should I use vacuum filtration instead of gravity media filtration?
Use vacuum filtration when: your gravity filter advances media every 10–30 minutes instead of every 2–8 hours; you need consistent sub-10 micron filtration in a high-sludge stream; wet sludge disposal cost is significant and you need near-dry solids output; floor space constraints prevent a larger gravity system. In moderate contamination applications, gravity filtration remains the more cost-effective choice.
What is the KĀV inline vacuum filter?
The KĀV (K Factor Advanced Vacuum) is an inline industrial vacuum filter rated to 400 GPM with a vacuum pump delivering up to 27 inches of mercury — approximately three times the vacuum force of comparable inline vacuum filtration systems. The KĀV features an oversized vacuum tank, integrated vacuum drying shelf for near-dry solids discharge, a media rewinder, and advanced PLC control.
What is the Q-Filter® for K Factor active vacuum belt filter?
The Q-Filter® for K Factor is an active vacuum belt filter developed by Esselent Solutions B.V. of the Netherlands for aqueous cleaner and machine coolant filtration. It achieves filtration to 5 micron standard and 2 micron with optional pre-coat, in a footprint of 2.0–2.8 m² using less than half the energy of comparable systems. Its intelligent control continuously adjusts vacuum pressure to prevent filter cloth compression — extending cloth life and maintaining filtration quality.
What is a coolant sump and why does it need to be cleaned?
A coolant sump is the tank beneath a CNC machine tool that collects and recirculates cutting fluid. As machining produces metallic particles, swarf, and tramp oil that exceed the filtration system's removal rate, solids settle in the sump and accumulate as sludge. Without vacuum filtration, sumps require manual cleaning every 4–12 weeks — a 2–4 hour, two-technician process that shuts down the machine.
Can vacuum filtration eliminate coolant sump cleaning?
Yes. A KĀV vacuum filtration system installed as a side-stream on the machine coolant circuit continuously removes solids from the coolant before they can settle in the sump. When removal rate consistently exceeds the sludge generation rate of the machining process, sludge accumulation stops and scheduled sump cleanouts are eliminated. Most facilities report sump cleaning requirements dropping to zero within 30–60 days of KĀV installation.
What micron rating does the KĀV achieve?
The KĀV's filtration performance depends on the filter media grade selected for the application. In grinding coolant applications, 5–15 micron is typical using fine-grade non-woven media. In general machining coolant, 15–25 micron is standard. For applications requiring sub-5 micron filtration, the Q-Filter® is the recommended system — achieving 5 micron standard and 2 micron with optional pre-coat filtration.
How does the Q-Filter®'s intelligent control system work?
The Q-Filter® continuously monitors pressure drop across the filter cloth and adjusts vacuum force in real time — maintaining the filter cake at optimal density. As the cake builds, vacuum increases to maintain flow rate, but stays below the compression threshold that would blind the cloth prematurely. This prevents the cloth compression that wastes media in conventional vacuum belt systems, extending cloth life significantly.
What industries use K Factor vacuum filtration systems?
K Factor vacuum filtration systems serve CNC machining and grinding, automotive pretreatment, central coolant systems, aqueous parts washing, industrial laundry, wire drawing, surface treatment, and food and beverage processing. The KĀV handles high-flow, high-sludge applications. The Q-Filter® serves precision aqueous cleaner and coolant applications requiring consistent sub-5 micron filtration in a compact footprint.
Does K Factor serve international markets for vacuum filtration?
Yes. K Factor serves the United States, Canada, and the Gulf region directly. The Q-Filter®, through the Esselent Solutions partnership, is available across Europe, Asia-Pacific, and Latin America via Esselent's distribution network. The KĀV is available globally. Contact K Factor at 1-289-362-6108 or sales@kfactorfilter.com to discuss supply and commissioning for your location.
What is the 30-day free trial for vacuum filtration systems?
K Factor's 30-day free trial makes the KĀV or Q-Filter® available in your facility at no cost and with no purchase obligation. We assess your application — sludge load, flow rate, micron requirement, floor space — deliver and commission the system, and you evaluate it for 30 days. If it does not perform as promised, return it. No invoice. Available to qualifying facilities in the US, Canada, UAE, Saudi Arabia, and other markets.
What is the payback period for a KĀV vacuum filtration system?
Payback periods depend on the application and the cost of the incumbent process. Facilities replacing scheduled sump cleaning on 5–10 machines typically see payback within 6–12 months through eliminated downtime, labour, and disposal cost. Facilities with high media consumption in overloaded gravity filters typically see payback within 12–18 months through media savings. Grinding operations with high tool wear attributable to contaminated coolant often see payback in under 6 months.
Automatic Self-Cleaning Filters
Go to the Automatic Self-Cleaning Filters pageWhat is an automatic self-cleaning filter?
A filter that removes solids from a liquid continuously and renews its own media without stopping the flow — no cartridges, no bags, no operator.
How is it different from a bag or cartridge filter?
A bag holds the solids until someone stops the flow and changes it. Here fresh media advances on its own when the old media loads up, so the flow never stops.
Which filter in the family do I need?
Most plants start with the K Factor Filter. The CMF suits a single machine; the Plastic Filter suits acids and corrosive liquids.
Where does the sludge go?
It leaves on the used media and drops into a bin you empty on your schedule.
Industrial Water Filtration Systems
Go to the Industrial Water Filtration Systems pageWhat is industrial water filtration?
Industrial water filtration removes suspended solids, oil and metal fines from process water, coolant and wastewater so the liquid can be reused or discharged.
Which filter do I need?
It depends on what is in the water. Fine solids take a self-cleaning or backwash filter; ferrous fines take a magnetic separator first; free oil takes an oil water separator; heavy sludge takes a vacuum or candle filter. Send us the process and we will tell you which.
Do you build the whole system or just the filter?
The whole system — filter, pump, tank, controls and commissioning — or the filter alone to fit what you have.
Magnetic Separation
Go to the Magnetic Separation pageWhat is industrial magnetic separation?
Industrial magnetic separation is the removal of ferrous (iron-containing) particles from a liquid stream using a permanent magnetic field. As the fluid passes through or over the magnetic element, ferrous particles are captured on the magnet surface and held while clean fluid flows on. Captured particles are discharged automatically on a timed or sensor-triggered cycle. Magnetic separation has no consumable elements and essentially zero operating cost after installation.
What particles does a magnetic separator capture?
Magnetic separators capture ferrous particles — those containing iron, steel, cast iron, and other magnetic metals. Non-ferrous particles including aluminium, copper, titanium, carbide, ceramic, and non-metallic swarf are not captured and pass through unaffected. For operations generating both ferrous and non-ferrous contamination, magnetic separation is used upstream of media filtration, which captures all remaining particles regardless of material type.
What is the GT-MAG magnetic separator?
The GT-MAG is K Factor's patented Gravity Tunnel inline magnetic separator. Process liquid flows under gravity through an inclined tunnel where it is exposed to a powerful magnetic conveyor that captures ferrous particles automatically. The GT-MAG features K Factor's unique Crystal Ball inspection window — a clear view port that allows visual performance verification without stopping the system. Operation is fully automatic with zero downtime for cleaning.
What is the PAC-MAG and how powerful is it?
The PAC-MAG (PACMAN) is a high-intensity inline magnetic separator developed by K Factor in partnership with MHD Magnets of the Netherlands — Europe's leader in ferrous particle removal. It operates at 0.6 Tesla (6,000 Gauss) of permanent magnetic flux density with a surface area up to 2.7 m² — capturing over 85% of ferritic particles down to 5 µm, the fine fraction that conventional drum separators miss. It is specifically designed for automotive degreasing and precision industrial fluid applications.
What is the K-Drum Black Belt drum magnetic separator?
The K-Drum Black Belt is K Factor's rare-earth drum magnetic separator using permanent magnets 10 times more powerful than conventional ferrite drum magnets. It continuously removes ferrous particles from heavy-contamination streams — grinding sludge, gear cutting chips, and PAC-MAG purge fluid — using a Black Belt conveyor system that automatically transports captured ferrous material to a collection bin without operator intervention.
What is purge water recovery in magnetic separation?
Purge water recovery captures and recycles the process fluid expelled during magnetic separator cleaning cycles. Every automatic purge cycle discharges process fluid (coolant, degreasing solution, or process water) along with the captured ferrous solids. A purge recovery system diverts this fluid to the K-Drum, removes the ferrous solids, and returns the clean fluid to the process — achieving 100% fluid retention and contributing to zero liquid discharge compliance.
What is zero liquid discharge and does K Factor's system support it?
Zero liquid discharge (ZLD) is the elimination of all liquid waste discharge from an industrial process. K Factor's purge recovery system contributes to ZLD by capturing 100% of magnetic separator purge fluid, removing ferrous solids, and returning clean fluid to the process circuit. ZLD compliance is mandated in specific sectors in India, incentivised in the Gulf region, and increasingly required under US EPA and Canadian provincial environmental regulations.
How does magnetic separation reduce media filter consumption?
Magnetic separation installed upstream of a media filter removes ferrous particles — which represent 60–85% of total contamination mass in ferrous machining operations — before the media filter. The media filter then handles only non-ferrous residual contamination, dramatically reducing its loading rate. Industry data consistently shows 50–80% reduction in media filter consumption in ferrous machining operations when magnetic pre-filtration is added to the circuit.
What is the K Factor Oil-Water Separator and how does it work?
The K Factor OWS (oil-water separator) removes tramp oil from coolant and industrial wastewater using a three-compartment coalescing design. A submerged partition prevents free oil from reaching the second compartment, where polypropylene coalescing media grows small oil droplets until they rise by gravity to the surface. The cleaned fluid exits to the third compartment for return to process. The OWS achieves 99%+ oil-water separation efficiency with no chemicals and no replaceable filter elements.
Which K Factor magnetic separator is right for my application?
GT-MAG: gravity-driven, zero downtime, patented Gravity Tunnel — best for moderate ferrous loading and circuits compatible with gravity-assisted flow. PAC-MAG: 6,000 Gauss, over 85% of ferritic particles down to 5 µm — best for degreasing, automotive pretreatment, and high-precision applications. K-Drum: rare-earth drum, 10× conventional magnets — best for heavy grinding sludge and gear cutting chip loads. Contact K Factor engineers for application-specific recommendations.
Does K Factor serve international markets for magnetic separation?
Yes. K Factor serves the United States, Canada, and the Gulf region (UAE, Saudi Arabia, Qatar, Kuwait, Oman, Bahrain) directly. Through partnerships with MHD Magnets of the Netherlands and Esselent Solutions of the Netherlands, K Factor's magnetic separation technology is available across Europe and Asia-Pacific. Contact K Factor at 1-289-362-6108 or sales@kfactorfilter.com to discuss supply, installation, and commissioning for your location.
What is the 30-day free trial for magnetic separation?
K Factor's 30-day free trial makes GT-MAG, PAC-MAG, or K-Drum magnetic separation systems available in your facility at no cost and with no purchase obligation. We assess your ferrous contamination load, fluid type, and flow rate. We commission the system inline. You measure media consumption, coolant clarity, and tool life over 30 days. If the results don't justify the investment, return the system. No invoice. Available to qualifying facilities in the US, Canada, UAE, Saudi Arabia, and other markets.
What is the payback period for a K Factor magnetic separation system?
Payback depends on the application and contamination load. Heavy grinding operations with high media consumption typically see payback within 3–9 months through media savings alone. Facilities with high tooling costs attributable to ferrous contamination often see payback within 3–6 months through tool life extension. Automotive degreasing bath applications typically pay back in 6–12 months through bath life extension and reduced chemical waste disposal costs.
Self-Cleaning Strainers
Go to the Self-Cleaning Strainers pageWhat is a self-cleaning strainer?
A self-cleaning basket strainer is a basket strainer that cleans itself. A pressure switch senses when the basket is loaded and a control panel backwashes the solids to drain through automated valves — no operator opens the lid.
Does the flow stop during backwash?
On a single strainer, for a few seconds. On a duplex strainer, no — the second basket takes the flow while the first is flushed.
What particle size can it capture?
The mesh is selected for the particle size you tell us to capture. Coarse screening and fine straining both fit; below the strainer range, a backwash filter takes over.
Is it a standard product?
No. Every system is designed to the application — the strainer, the valves and the panel are chosen for your flow, fluid and line. That is why we ask for your process first.
Automotive
Go to the Automotive pageWhat causes seeds and craters in E-coat?
Seeds and craters in E-coat are caused by sub-25-micron particulate — typically iron fines, phosphate sludge carry-over, or degreaser oil — reaching the E-coat tank. Layered upstream filtration (pressure backwash on recirc loops, magnetic capture before the tank, vacuum on sumps) eliminates the contamination at its source.
What is the best filter for an automotive phosphate bath?
An automatic backwash pressure filter (K-Optifil) on the recirculating loop is the industry standard for live phosphate solids, paired with a KĀV vacuum unit for settled sludge in the tank bottom. Together they keep the bath in spec without dump cycles.
How do you remove iron fines before E-coat?
A high-intensity inline magnetic separator (PAC-MAG at 6,000 Gauss) installed after the final rinse and upstream of the E-coat tank captures sub-25-micron ferrous fines that bag filters and basket strainers leave behind.
Will a backwash filter handle phosphate sludge?
K-Optifil handles continuous phosphate solids on the recirculating loop. For settled sludge in tank bottoms, pair it with a KĀV vacuum unit on the sump.
Where does the magnetic separator go in a paint line?
PAC-MAG installs inline upstream of the E-coat tank — typically after the final rinse — to strip iron fines before they contaminate paint chemistry.
Do you have references in automotive?
K Factor has 100+ installations on automotive paint pretreatment lines globally. Contact us for site-specific references in your region.
CNC, Grinding & Honing
Go to the CNC, Grinding & Honing pageHow do you extend CNC coolant life?
Coolant life is extended 3–5× by continuously removing sub-10-micron fines, ferrous swarf, and tramp oil that exhaust the fluid. A combined Q-Filter® (1-micron vacuum) and K-Drum Black Belt (rare-earth magnetic) system clarifies the sump 24/7 without disposable media.
What is the best filter for grinding coolant?
For grinding coolant, a 1-micron active vacuum belt filter (Q-Filter®) outperforms paper bed and bag systems on both finish quality and operating cost — it captures the submicron fines that defeat disposable media and eliminates consumable spend.
How do you remove ferrous fines from machine tool coolant?
A rare-earth drum magnetic separator (K-Drum Black Belt) captures ferrous fines at roughly 10× the efficiency of conventional magnets, including sub-25-micron swarf that recirculates through filter media and degrades surface finish.
Can I keep my existing coolant chemistry?
Yes. Our filtration platforms are chemistry-agnostic — they operate as a clarification stage on whatever water-soluble or synthetic coolant you currently run.
How fine can you filter?
Q-Filter® holds 1 micron continuously. KĀV vacuum systems handle coarser swarf at high flow. K-Drum magnetic captures sub-25-micron ferrous fines.
What's the payback?
Most installations recover their cost in 6–18 months from coolant savings, tool life, and disposal reduction. Run a 30-day in-plant trial to verify on your fluid.
Cooling Towers & HVAC
Go to the Cooling Towers & HVAC pageWhat is the best filter for a cooling tower?
An automatic backwash pressure filter on a 10–25% side-stream loop is the standard solution. It runs continuously without disposable media, fires backwash only when differential pressure rises, and removes the suspended solids that scale heat exchangers and feed biofilm.
How does cooling tower filtration prevent Legionella?
Legionella colonizes biofilm, and biofilm anchors to suspended solids. Continuous side-stream filtration removes those solids before biofilm can establish — making biocide treatment more effective and reducing Legionella risk as one layer of a broader water-management program.
How much energy does cooling tower fouling cost?
Heat-exchanger fouling typically increases chiller energy use 10–15%, with each millimeter of scale cutting heat transfer 5–10%. Continuous side-stream filtration preserves the design heat-transfer coefficient and pays back through reduced compressor runtime.
Side-stream or full-flow filtration?
Most cooling tower loops are well served by a 10–25% side-stream filter. Full-flow makes sense for high-fouling source water or when chiller tubes are unusually sensitive.
Will the backwash water count as blowdown?
Backwash reject can often be routed to existing blowdown or sewer lines. Reject volumes are typically 1–3% of throughput on dP-triggered cleaning.
Oil, Gas & Petrochemical
Go to the Oil, Gas & Petrochemical pageHow does K Factor's integrated CakeFil + FlowMAG system reduce CAPEX vs a conventional 4-stage train?
A conventional produced-water injection train uses four discrete stages — coarse strainer, multimedia filter, cartridge fine filter, and antiscalant dosing skid — with associated piping, instrumentation, and plot space. K Factor's integrated solution collapses that into a single CakeFil precoat skid plus an inline FlowMAG magnetic conditioner. Typical CAPEX drops from approximately $2.5M to $0.95M per train (>60% reduction), with proportional cuts to footprint and installation cost.
How do you protect jet pumps from nozzle and venturi erosion?
Jet pumps require clean, low-solids, scale-controlled motive water to avoid erosion of the nozzle and venturi geometry that drives lift performance. CakeFil precoat filtration delivers stable ~2 µm effluent on highly variable solids loading, and FlowMAG mitigates CaCO₃ and BaSO₄ scale formation downstream. Together they sustain jet-pump efficiency and extend overhaul intervals.
Can you eliminate antiscalant chemical dosing?
In many oilfield streams, yes. MHD FlowMAG's patented multi-pole magnetic conditioning prevents formation of CaCO₃, BaSO₄, MgCO₃, and asphaltene deposits without any chemical addition. Field references include Total Energies in the North Sea (significant asphaltene reduction) and Kuwaiti operations (up to 35% asphaltene precipitation reduction). Where some residual dosing is still required, dose rates drop substantially.
What is the best filter for produced water?
For high-solids produced water with sand, scale, and iron sulfide, the K Factor approach is CakeFil precoat filtration paired with FlowMAG magnetic conditioning and, where ferrous corrosion product dominates, an upstream PAC-MAG magnetic separator. The combination handles the full contamination profile continuously without disposable cartridges or antiscalant chemicals.
How do you meet water-injection particulate limits?
Continuous CakeFil filtration upstream of the injection pumps controls particulate to the level required to avoid formation plugging and preserve sweep efficiency — typically 2–10 µm absolute for sandstone formations and 5–25 µm for carbonate. Sizing and micron rating are matched to each field's injectivity specification.
How do you remove iron sulfide from oilfield water?
Inline magnetic separation (PAC-MAG) is the most effective capture mechanism for iron sulfide and ferromagnetic corrosion product, since iron sulfide rapidly blinds conventional filter media. Magnetic separation runs continuously and is purged on schedule without consumable spend, then handed off to CakeFil for residual fine solids.
Are your systems suitable for Gulf and offshore operating conditions?
Yes. K Factor has an active install base across the UAE, Saudi Arabia, and other Gulf markets, with Duplex and Super Duplex material options for high-chloride produced water. Skid footprints are engineered for offshore platform deck space and remote wellsite constraints, and controls are specified for minimum-manning operation.
Do you support API-aligned design?
Pressure vessels and skid packages are engineered to align with applicable API standards on a project-by-project basis, with full material traceability and ISO-certified manufacturing from our Hamilton, Ontario facility.
Chemical & Scrubber Blowdown
Go to the Chemical & Scrubber Blowdown pageWhat is the best filter for scrubber blowdown?
An automatic backwash pressure filter built with corrosion-resistant wetted parts (plastic media or 316L stainless, matched to the chemistry) is the standard solution. It runs continuously on the high-solids, aggressive blowdown stream without consumable media and without manual basket pulls.
How do you filter acidic or caustic process streams?
Aggressive chemistry requires material-matched construction — typically a plastic-bodied filter or stainless build with elastomer selection specific to the acid/base concentration and temperature. K Factor's plastic media filter line and engineered skids are designed specifically for these duties.
Can scrubber blowdown be reused?
Yes — with reliable upstream filtration, blowdown can be returned to the scrubber loop instead of going to discharge, cutting fresh-chemistry cost. The filter is the enabling step; the economics typically justify the filter on chemistry savings alone.
What materials of construction are available?
We build in 316/316L stainless, plastic-bodied options for aggressive chemistry, and special alloys on engineered packages.
Can you handle hot blowdown?
Yes. Material selection and gasket specification are matched to operating temperature on every project.
Do you provide skid-mounted packages?
Yes — our Custom Engineering team builds skid packages with controls, instrumentation, and piping pre-fabricated for plug-in installation.
Mining & Heavy Industry
Go to the Mining & Heavy Industry pageWhat is the best filter for mining process water?
A heavy-duty automatic backwash pressure filter (K-Optifil) sized for high GPM duty is the standard solution for mining process water. It handles abrasive mineral solids continuously without consumable media and without manual basket pulls — critical at remote sites where filter swap windows aren't acceptable.
How do you protect blast furnace cooling water?
Continuous automatic backwash filtration on the cooling loop maintains heat-transfer surfaces and protects tuyeres and shell-cooling channels from fouling. Element specification and material selection are matched to the operating temperature and solids load of the furnace water.
How do you filter dust scrubber blowdown?
Wet scrubbing concentrates fly ash and reaction-product solids into a high-load blowdown stream that quickly plugs cartridges. A heavy-duty backwash filter with abrasion-resistant elements handles this duty continuously and enables reuse of the scrubber water.
How abrasive a stream can you handle?
Element specification, vessel lining, and material selection are matched to abrasive load on every project. We've installed in tailings, slag, and dust-blowdown duty.
Do you build for remote sites?
Yes — skid packages ship complete with controls, instrumentation, and piping ready for connection on arrival.
Food, Pharma & High-Purity
Go to the Food, Pharma & High-Purity pageWhat is the best filter for food and pharma processes?
A high-intensity inline magnetic separator (PAC-MAG at 6,000 Gauss) installed as a HACCP critical control point captures ferrous contamination at a level metal detectors cannot reach, with hygienic-design wetted parts and audit-supporting documentation.
How do you prevent metal contamination in food processing?
High-intensity magnetic separation upstream of the metal detector and fill point captures ferrous fines from upstream stainless wear and ingredient handling — preventing metal-detector trips, recall exposure, and lost batches.
Are your filters FDA / GMP compliant?
Wetted parts, surface finish, gasket selection, and material certifications are specified to support FDA contact requirements, GMP practice, and HACCP documentation. Material test reports are provided as part of the project documentation package.
Can you supply material certificates for audit?
Yes. Material test reports and component certifications are provided as part of the project documentation package for FDA-regulated builds.
Where in the process does the magnetic separator go?
Most installs place the PAC-MAG immediately upstream of a downstream metal detector or fill point, functioning as a HACCP critical control point.
Is the design suitable for sanitary cleaning?
Wetted parts and seals are specified for the cleaning regime in use — CIP, hot-water sanitization, or chemical sanitization as required.
Aqueous Cleaners, Parts Washing & Laundry
Go to the Aqueous Cleaners, Parts Washing & Laundry pageHow do you extend aqueous cleaner bath life?
Aqueous cleaner bath life is extended 3–5× by continuously removing the soils, fine particulate, and tramp oil that exhaust the chemistry. A 1-micron active vacuum belt filter (Q-Filter®) clarifies the bath inline without disposable media and without taking the washer offline.
What is the best filter for a parts washer?
A sump-side inline vacuum filter (KĀV) running at 27" Hg pulls solids and oil from the bath bottom while the parts washer continues running — the standard solution for spray and immersion washers where bath dump frequency drives operating cost.
How do you remove lint from industrial laundry water?
Self-renewing vacuum belt filtration sized to laundry flow profiles captures lint and fiber inline, protecting downstream heat exchangers, screens, and treatment equipment without the consumable spend of bag or screen systems.
Will this hurt my cleaner chemistry?
Vacuum filtration is chemistry-agnostic. It removes the soils that exhaust chemistry — extending the useful life of whatever cleaner you currently run.
Can it remove tramp oil?
Yes. Vacuum platforms can be configured to capture floating oil along with suspended particulate, restoring bath performance.
K-OptiFil®
Go to the K-OptiFil® pageStrainer or backwash filter?
A strainer stops coarse solids and is cleaned by hand. A backwash filter stops much finer solids and cleans itself.
Full comparison →What starts the backwash?
A rise in pressure difference across the screen, a timer, or a manual push starts the clean. So an auto backwash filter cleans as often as the solids load calls for, not on a fixed schedule.
How differential pressure triggers backwash →Does it need consumables?
Only the filter fabric — replaced after several thousand backwashes, usually months.
What is the finest it filters?
5 µm on woven mesh. Down to 1 µm with a filter cake, so it works as a 1 micron filter that still cleans itself. 3 µm depth media for viscous liquids.
Can we test it on our fluid?
Yes. A K-OptiFil demo unit is available for on-site trials. Terms on request.
The K Factor Filter
Go to the The K Factor Filter pageWhat micron can it reach?
Standard media is 25 µm nominal (K1500: 50 µm). With finer media it goes down to 1 µm in certain applications. Once a cake builds on the media, it filters finer still.
Where does the sludge go?
It stays on the used media, which rolls out into a bin at the end of the filter. You empty the bin on your schedule.
Can I test it before I buy?
Yes. We qualify your application, send you media samples to test on your own liquid, and where it fits we run a demo in your plant.
Plastic Filter
Go to the Plastic Filter pageWhat is the K Factor Plastic Filter?
It is a fully automatic media filtration system built from chemical-resistant plastics selected for the liquid and corrosive agents in the application.
What flow rates are available?
The published range starts at 5 GPM. Larger systems are engineered to the required flow, chemistry, solids loading, and installation conditions.
Does the Plastic Filter require backwashing?
No. When the media loads with solids, the liquid level rises and triggers the system to advance fresh media automatically.
Which industries use a Plastic Filter?
The supplied K Factor datasheet identifies automotive and petrochemical applications, particularly where corrosion-resistant construction is required.
Candle Filter
Go to the Candle Filter pageWhat is the CakeFil candle filter?
CakeFil is a process candle filter for cake-building filtration of industrial process liquids. Vertical filter candles inside a pressure vessel build a filter cake that progressively captures particles down to sub-micron size. A patented candle geometry leaves the cloth cleaner after each backwash, extending cloth life. CakeFil is supplied across North America and the Gulf by K Factor Filter.
What is cake building filtration?
Cake building filtration is a pressure-driven solid-liquid separation process where the actual filtration happens at the filter cake that builds on the medium's surface — not at the medium itself. As the process fluid flows through the filter, solid particles accumulate layer by layer, and the cake itself becomes a progressively finer filter medium. Under optimal conditions with filter aid precoat, a fully developed filter cake separates particles below 1 micron.
What flow rates and filter surface area does CakeFil cover?
A single CakeFil vessel handles flow rates above 1,000 m³/h with up to 356 m² of filter surface area in the wet-discharge configuration. Pilot plant systems are available at 1.7 m² (slurry), 1.2 m² (dry), and 0.1 m² (bench scale) for application validation prior to full-scale capital commitment.
Which filter cloths and filter aids are available?
Six filter cloth options: PP Mono, PP Multi, PP Mono/Multi (standard polymers), and PVDF/PTFE, PPS Multi, PVDF Mono/Multi (high-performance). Four filter aids: cellulose, diatomite, perlite, and activated carbon — selected for the chemistry, throughput, and discharge requirements of each application.
Can CakeFil handle pharmaceutical and food-grade applications?
Yes. CakeFil's all-plastic inner-parts configuration eliminates metallic contamination risk. Food-grade cellulose filter aid is FDA / EU food regulation compliant. The closed, automated cycle supports HACCP and cGMP validation. Documentation to support pharmaceutical installation qualification is available on request.
Can CakeFil be tested on our fluid first?
Yes. Pilot plant systems at 1.7 m², 1.2 m² and 0.1 m² run on your actual process fluid before any capital commitment. Terms on request — 1-289-362-6108 or sales@kfactorfilter.com.
FlowMag
Go to the FlowMag pageWhat is the FlowMag and how does it prevent scale?
The FlowMag is an inline magnetic fluid treatment system manufactured by MHD Magnets B.V. of the Netherlands. It uses advanced permanent magnets at 0.5 Tesla effective magnetic flux density, combined with a specific fluid dynamic flow path, to change the precipitation and crystallisation behaviour of scale-forming ions in water. Calcium carbonate, calcium sulphate, and iron phosphate precipitate as larger, rounder, less-adhesive crystals that remain suspended in the fluid rather than depositing on pipe walls and heat exchanger surfaces.
Is there independent scientific evidence that FlowMag works?
Yes. TU Delft (Delft University of Technology, Netherlands) conducted independent laboratory trials studying calcium phosphate precipitation with and without FlowMag treatment. Electron microscopy at 500× and 2,000× magnification confirmed a measurable shift in crystal morphology — treated samples showed larger, rounder particles with lower surface adhesion than untreated controls. MHD Magnets also provides before-and-after photographic documentation from automotive industry installations at 3 months and 7 months of operation, showing progressive scale dissolution.
What scale types does FlowMag control?
FlowMag controls calcium carbonate (the most common industrial scale — cooling towers, heat exchangers, pipelines), calcium sulphate (produced water and industrial process water), iron phosphate (industrial process water with iron contamination and phosphate treatment), and various metal hydroxides. For barium sulphate scale — common in oilfield produced water — suitability should be confirmed with K Factor's engineers.
Does FlowMag remove existing scale or only prevent new scale?
Both, simultaneously. In systems with existing scale deposits, the FlowMag's magnetic field proportionally dissolves and disintegrates previously deposited scale. The disintegrated particles are carried downstream with the passing fluid and exit the system through blowdown or drainage — confirmed visually by before-and-after photographs at 3 months and 7 months post-installation.
What is the FlowMag Plus and when should it be specified?
FlowMag Plus is the enhanced variant designed for applications where high operating pressure and/or aggressive chemicals prevent installation of the standard model. A different internal tube configuration delivers significantly higher pressure rating; an internal coating on the magnetic module provides chemical resistance and wear protection. Specify FlowMag Plus for upstream oil & gas, high-pressure chemical process lines, sour service environments with H₂S or CO₂ content, and aggressive chemistry systems.
What flow rates does FlowMag cover?
Seven models from SST-3 (30–45 m³/h, DN80) to SST-12 (445–650 m³/h, DN300). All have pressure drop below 0.1 bar and EN 1092-1 Type 01 flanged connections. Multiple units can be installed in series for systems requiring longer magnetic treatment contact time.
Can FlowMag replace chemical antiscalant injection?
Up to approximately 400–500 mg/L hardness as CaCO₃, FlowMag can replace antiscalant injection as the primary scale control measure. In very high hardness waters or for unusual scale types such as barium sulphate or silica scale, FlowMag may reduce but not fully replace chemical treatment. K Factor's engineers assess each installation and provide a specific recommendation based on water chemistry, hardness, and existing scale history.
What industries and applications use FlowMag?
Automotive manufacturing (cooling water, pretreatment, paint line water), cooling towers and HVAC (industrial and commercial), oil & gas (produced water, injection water, heat exchangers — FlowMag Plus for high-pressure sour service), chemical and petrochemical processing, food and beverage (where chemical dosing is restricted), pharmaceutical, mining, and power generation.
