Fil-Trek
Industrial filtration cartridges, bags, housings, strainers, and turn-key pump/filter skids — FRP corrosive-service vessels, ASME code-stamped housings to Class 2500.
Fil-Trek makes industrial filtration cartridges, bags, housings, strainers, and turn-key pump and filter skids. Cartridge lines include FLUORO PURE pleated PTFE, and high-flow elements reach 500 GPM each. FRP housings serve corrosive and marine service, duplex DSL/DTL housings allow zero-downtime bag swaps, and ASME code-stamped housings run to Class 2500.
What LibertyCES specifies from Fil-Trek
Pleated PTFE membrane for aggressive liquids, NSF-61 compliant high-flow elements to 500 GPM, and stainless wire-mesh for polymer-media limitations.
FRP fiberglass housings for corrosive/marine service, and duplex dual-vessel designs enabling zero-downtime bag swaps.
Fil-Trek — Real Catalog Spec Data
| Product Line | Model | Category | Material | Size / Capacity | Temp Rating |
|---|---|---|---|---|---|
| Cartridge Filters | KLARES/ALARIS/AQUA-TEC/ECOMESH/FLUORO PURE/TEF-PURE/POROSHIELD/WW/etc (17 lines) | Filter | polypropylene/cellulose/PES/PTFE/stainless mesh/sintered metal | 2.5" OD, 10"-40" length, 0.2-100 micron | - |
| High Flow Filters | 700/700MB/800MB/Cascade-600/HF/Mega Flow/Max Flow/Ultra Flow/UFW/ACT | Filter | polypropylene/polyester/glass fiber, stainless (ACT) | 6"-7" OD, 20"-60" length, up to 500 GPM/element | - |
| Bag Filters | 500/MF/MF61/MB/BOS/MPG/MPS/PMF/DF/ESP/PEPTDP/PEPT/POEL/TW/XPOMF | Filter | polypropylene/polyester/nylon/PTFE felt, depth, mesh | P1/P2/P4 sizes, 1-200 micron | - |
| Cartridge Housings | GL/EGL/GLH/EAQ/FRP/FRPH/HPI/HT/L/UPW/LH/MP/MPH/LM/M/MSO/VC/PF | Housing | carbon steel, 304/316 SS, FRP (fiberglass), Teflon-lined | 2.5"-40" cartridge length compatible | - |
| High Flow Housings | UF/UFH/UFS/TW/HF/HFH/HFS/700V/700H/MX/MFV/MFH | Housing | carbon steel, 304/316 SS | 6"-7" OD cartridge compatible, up to 500 GPM/element | - |
| Bag Housings | ELP/LP/EBMB/BMB/FRP-BMB/ESL/SL/TW/TL/ETL/HSL/DSL/DTL/PSL/PTL/SLDV/PBFC/TLDV | Housing | carbon steel, 304/316 SS, FRP (fiberglass) | P1/P2/P4 compatible, single to 24+ bag capacity | - |
| Fabricated Strainers | 90/91/92/93/94/95/96/97 Series | Strainer | carbon steel, 304/316 SS, duplex, super duplex, Hastelloy, Inconel, titanium | 1"-48"+, up to ANSI Class 2500 | - |
| Automatic Strainers | 98 Series | Strainer | carbon steel, 304 SS, 316 SS | - | -50F (methanol service application) |
| Filtration Systems | PFS Turn-Key Pump/Filter Skid | System | carbon steel, 304 SS, 316 SS | - | - |
Sourced from Fil-Trek's own catalog documentation.
Related Manufacturers & Products
Bag Filter Housing Construction
Duplex zero-downtime housings, FRP corrosive-service housings, and NSF/61 filter bag media.
DSL/DTL duplex housing — valve changeover enables zero-downtime bag swaps.
Same duplex housing, as-installed — connected to real facility piping in a semiconductor filtration room.
ELP Series housing, related to the FRP-BMB corrosive-service multi-bag line.
Mera Felt MF61 — NSF/61-compliant seamless polypropylene bag media.
High-Purity Multi-Cartridge Housings for UPW Service
A separate Fil-Trek line from the bag housings above — 316 stainless pressure vessels with a virgin PFA-lined wetted interior, crevice-free construction, and zero-bypass cartridge sealing, published from 9 to 210 elements and roughly 180–4,200 GPM depending on model. Built for semiconductor and other high-purity polishing/distribution service where the housing itself can't be allowed to contribute particulate or ionic contamination back into the water.
Separate dirty and clean drain connections preserve that quality boundary through maintenance and cartridge changeout; the top vent supports complete fill/wetting during startup.
A UPW housing can be loaded with the correct high-retention cartridges and still fail its actual job if any water finds a path around the cartridge seal instead of through the media — bypass water never touched the filter, no matter how fine its rating. Fil-Trek's absolute/zero-bypass sealing via direct plate seating exists specifically to close that path. But the housing alone doesn't manufacture ultrapure water; upstream RO, EDI, and UV establish the ionic/organic purity, and this housing's real job is preserving that purity without becoming a new contamination source itself.
Cartridge selection is where projects most often go wrong even with the right housing. Fil-Trek's own high-purity media — TEF-PURE PTFE, AQUA-TEC PES, FMA polypropylene — spans a real range of retention ratings, and current SEMI standards (F63/C79) specifically address sub-15 nm filtration for the most demanding UPW positions. A cartridge that's excellent for RO guard filtration can be the wrong choice for final polishing ahead of leading-edge wafer processing. LibertyCES's job is confirming exactly where in the train a given housing sits before the cartridge, connection geometry, and DP instrumentation package get finalized — not assuming "UPW Series" alone answers that question.
Frequently Asked Questions
What is a duplex bag filter housing used for?
Duplex (dual-vessel) housings like Fil-Trek's DSL/DTL/SLDV/TLDV Series use a valve changeover to enable zero-downtime bag swaps — a real engineering feature for continuous chemical dosing or process lines that can't tolerate a filtration shutdown.
What materials are available for Fil-Trek fabricated strainers?
Carbon steel, 304/316 stainless steel, duplex, super duplex, Hastelloy, Inconel, and titanium, rated up to ANSI Class 2500 — one of the broadest exotic-alloy ranges available for a strainer in the LibertyCES catalog.
What is FRP housing material and when is it used?
Fiberglass-reinforced plastic (FRP) is a non-metallic pressure vessel material explicitly built for corrosive and marine service — a real, distinct material class from metal alloys or PVC/PP/PVDF fittings, available on both cartridge and multi-bag housings.
Get the right filtration system for your chemistry and flow rate
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Fil-Trek models in the LibertyCES catalog
9 models across 9 product lines. For most models that state them (the middle 80%): connection sizes 1–48 in. Extremes are in the table.
| Model / line | Type | Size / capacity / flow | Pressure | Temperature | Wetted material | Source |
|---|---|---|---|---|---|---|
| Cartridge Filters KLARES/ALARIS/AQUA-TEC/ECOMESH/FLUORO PURE/TEF-PURE/POROSHIELD/WW/etc (17 lines) | Filter | 2.5" OD, 10"-40" length, 0.2-100 micron | polypropylene/cellulose/PES/PTFE/stainless mesh/sintered metal | Fil-Trek — Industrial Filtration | ||
| High Flow Filters 700/700MB/800MB/Cascade-600/HF/Mega Flow/Max Flow/Ultra Flow/UFW/ACT | Filter | 500 gpm | polypropylene/polyester/glass fiber, stainless (ACT) | Fil-Trek — Industrial Filtration | ||
| Bag Filters 500/MF/MF61/MB/BOS/MPG/MPS/PMF/DF/ESP/PEPTDP/PEPT/POEL/TW/XPOMF | Filter | P1/P2/P4 sizes, 1-200 micron | polypropylene/polyester/nylon/PTFE felt, depth, mesh | Fil-Trek — Industrial Filtration | ||
| Cartridge Housings GL/EGL/GLH/EAQ/FRP/FRPH/HPI/HT/L/UPW/LH/MP/MPH/LM/M/MSO/VC/PF | Housing | 2.5"-40" cartridge length compatible | carbon steel, 304/316 SS, FRP (fiberglass), Teflon-lined | Fil-Trek — Industrial Filtration | ||
| High Flow Housings UF/UFH/UFS/TW/HF/HFH/HFS/700V/700H/MX/MFV/MFH | Housing | 500 gpm | carbon steel, 304/316 SS | Fil-Trek — Industrial Filtration | ||
| Bag Housings ELP/LP/EBMB/BMB/FRP-BMB/ESL/SL/TW/TL/ETL/HSL/DSL/DTL/PSL/PTL/SLDV/PBFC/TLDV | Housing | P1/P2/P4 compatible, single to 24+ bag capacity | carbon steel, 304/316 SS, FRP (fiberglass) | Fil-Trek — Industrial Filtration | ||
| Fabricated Strainers 90/91/92/93/94/95/96/97 Series | Strainer | 1"-48"+, up to ANSI Class 2500 | carbon steel, 304/316 SS, duplex, super duplex, Hastelloy, Inconel, titanium | Fil-Trek — Industrial Filtration | ||
| Automatic Strainers 98 Series | Strainer | - | to -50 °F (to -46 °C) | carbon steel, 304 SS, 316 SS | Fil-Trek — Industrial Filtration | |
| Filtration Systems PFS Turn-Key Pump/Filter Skid | System | - | carbon steel, 304 SS, 316 SS | Fil-Trek — Industrial Filtration |
This table is part of the equipment catalog dataset (CSV and JSON).
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Reviewed by James Riggins, 30+ years specifying water and chemical process equipment · Updated