We supply genuine Darlly industrial filter cartridges, disposable capsules, and pressure vessels: High Flow elements, sterile PES/PTFE membranes, depth media, and vessels.
Darlly Filtration Product Range
Certified industrial product series of High Flow cartridges, sterilizing membranes, depth elements, and stainless steel vessels from Darlly Filtration.
High Flow filter cartridges (HF, SHF, MHF series)
Darlly High Flow filter cartridges featuring a large 6-inch (152 mm) outside diameter deliver filtration flow rates up to 70–110 m³/h per single cartridge.
Available in outside-to-inside (HF) and inside-to-outside (SHF, MHF) flow patterns, these elements serve seawater desalination plants, thermal power station condensate polishing, RO pre-filtration, and industrial process water treatment.
Hydrophilic PES membrane filter cartridges (PAE series)
Pleated membrane cartridges Series PAE incorporate highly asymmetric hydrophilic polyethersulfone (PES) membranes for sterilizing-grade filtration across biopharmaceutical and beverage packaging facilities.
The cartridges guarantee absolute bacterial retention of Brevundimonas diminuta per ASTM F838 with minimal protein adsorption and ultra-low extractable levels.
Fluoropolymer filter cartridges Series PTB and BTG featuring hydrophobic expanded PTFE membranes serve sterile air tank venting, compressed gas purification, nitrogen filtration, and aggressive chemical processing.
Hydrophilic PTFE Series PTBL provides spontaneous wet-out for filtering concentrated acids and caustic alkalis without alcohol pre-wetting.
Application: sterile vent gas filtration (hydrophobic PTFE) or aggressive chemical solvents (hydrophilic PTBL); process temperature.
Polypropylene melt blown depth filter cartridges Series DLPP are manufactured from 100% virgin polypropylene resin via thermally bonded microfiber blowing without surfactants or binders.
The continuous gradient pore matrix distributes solid particle loading across cartridge depth, significantly extending downstream membrane operational service intervals.
Configuration: standard 2.5" or Big Blue 4.5" OD, smooth or grooved exterior, length 10" to 50", filtration rating 1–100 µm.
Stainless steel sanitary and industrial cartridge filter housings
Darlly cartridge filter vessels fabricated from AISI 304 and AISI 316L stainless steel handle aggressive liquids, steam, and gases.
Sanitary Series A and D models feature electrochemical interior mirror polishing down to Ra < 0.4 µm devoid of dead legs, quick-release Tri-Clamp closures, and design pressures up to 10–16 bar.
Precision string wound depth filter cartridges Series DLSW are engineered by computer-controlled tension winding of polypropylene, bleached cotton, or fiberglass rovings over rigid central core tubes.
The elements exhibit excellent structural resilience against differential pressure surges across high-viscosity coatings, resins, and hot process solutions.
Replacement pool and spa filter cartridges (SC series)
Replacement pool and spa filter cartridges Series SC are precision engineered for hot tubs, residential spas, and commercial aquatic centers.
Featuring genuine Reemay trilobal spunbond polyester filtration fabric, the elements trap particulates and body oils, while Microban-infused polyurethane end caps suppress microbial growth.
Selection: Darlly part number (SC704, SC705, SC706…), cross-reference code (Pleatco, Unicel, Filbur), outer diameter, length, and end cap style.
System Sizing & Technical Selection
Application engineers calculate clean pressure drop, filter surface area requirements, and vessel cartridge counts for new and retrofitted process water and fluid treatment trains.
Consumable Cartridges & Seal Elastomers
We maintain reliable supply schedules for replacement High Flow cartridges, PES/PTFE membrane elements, capsules, and chemical-resistant EPDM, Silicone, and Viton gaskets.
How to identify Darlly cartridge part numbers and end cap adapters
Darlly Filtration manufactures comprehensive filtration cartridges for industrial water, pharmaceutical, and power plant facilities; series HF, PAE, PTB, and DLPP differ in media composition, thermal resistance, and end cap adapter geometry.
To select an exact replacement element, copy the manufacturer part number from the end cap laser engraving, packaging carton, or vessel technical documentation. The alphanumeric designation encodes the filter media series, length in inches, micron rating, and adapter configuration.
If markings are illegible, measure cartridge outer diameter (standard 68 mm, High Flow 152 mm, or Big Blue 115 mm), length over end seals, and connection style: double open end DOE, Code 7 (226 with bayonet tabs), Code 8 (222 with locking ears), or MPT threads.
High Flow filter cartridge design: HF, SHF, and MHF series
Darlly High Flow filter cartridges with a 6-inch outer diameter are engineered for industrial processes handling liquid flows from dozens to hundreds of cubic meters per hour.
The large pleated surface area reduces required filter element quantities by a factor of 10 to 20 compared with conventional two-inch cartridges, substantially reducing pressure vessel footprints.
The HF Series utilizes an outside-to-inside flow pattern protected by an external rigid polypropylene cage resisting pressure fluctuations. Series SHF and MHF employ an inside-to-outside flow path, retaining all captured particulates inside the cartridge core during element changeouts.
Series MHF and XHF provide direct drop-in replacement for Pall Ultipleat High Flow and 3M High Flow baskets.
Pleated membrane cartridges Series PAE featuring asymmetric hydrophilic polyethersulfone (PES) membranes serve critical bioburden reduction and cold sterilization across biopharmaceutical, beverage, and high-purity microelectronics facilities.
The smooth pore diameter gradient delivers elevated flux rates and high particulate dirt-holding capacity prior to reaching terminal differential pressure limits.
22 micron pore size are fully validated for complete retention of Brevundimonas diminuta challenges at concentrations exceeding 10⁷ CFU/cm² under ASTM F838 standards. Thermally bonded assembly eliminates adhesives and curing agents.
The cartridges tolerate hot water CIP sanitization and repeated steam-in-place SIP cycles up to 135 °C.
Chemical compatibility of PTFE fluoropolymer cartridges (PTB and PTBL)
Fluoropolymer membrane cartridges Series PTB and BTG incorporating hydrophobic expanded PTFE membranes are engineered for sterile gas filtration, compressed process air purification, and tank sterile venting.
Natural PTFE hydrophobicity prevents moisture droplet wetting of pores from humid atmospheric air.
For aggressive chemicals, concentrated mineral acids, and polar solvents, Series PTBL incorporates hydrophilic surface modification, enabling spontaneous water wet-out without flammable alcohol conditioning.
All polymeric construction components demonstrate comprehensive chemical inertness against harsh oxidizers, solvents, and corrosive reagents up to continuous temperatures of 95 °C.
Melt blown depth elements DLPP and precision wound DLSW cartridges
Polypropylene depth filter cartridges Series DLPP are manufactured via continuous melt-blown thermal bonding from virgin polymer resin without synthetic lubricants.
Continuous radial gradient pore density traps gross suspended particulates across outer zones while capturing fine contaminants deep within core layers, avoiding premature surface blinding.
Precision string wound cartridges Series DLSW feature continuous roving winding over rigid stainless steel or polypropylene support cores.
The structural core provides high mechanical rigidity against differential pressure spikes when filtering high-viscosity resins, varnishes, metalworking fluids, and galvanic plating solutions.
Sanitary and industrial stainless steel filter vessels
Darlly filter housings are precision fabricated from AISI 304 and acid-resistant AISI 316L stainless steel alloys. Pressure vessel geometry is rated for continuous operating pressures up to 10–16 bar with rigorous hydrostatic pressure hold testing.
4 µm, eliminating crevice entrapment and bio-fouling risks. Tri-Clamp sanitary sanitary connections facilitate rapid disassembly and inspection without heavy tools. For bulk liquid transfer, horizontal and vertical HFH vessels accommodate High Flow cartridges up to 60 inches in length.
Selection of replacement SC cartridges for pools and spa facilities
Darlly is among the premier international manufacturers of replacement filter cartridges for whirlpool baths, swim spas, and commercial aquatic complexes.
Series SC filter elements are fabricated from genuine Reemay spunbond polyester filtration fabric featuring trilobal filament cross-sections that effectively intercept suspended fines, debris, and cosmetic body oils.
Microban antimicrobial protection integrated into polyurethane end cap castings inhibits mold and bacterial colony growth. Cartridge selection is performed via Darlly catalog code, hot tub brand references, or physical measurements of outer diameter, pleated height, and bottom thread dimensions.
Quotation specifications and international supply agreements
Confirm complete supply configurations: replacement filter cartridges, single-use capsule units, EPDM/silicone/Viton elastomer seal gaskets, or complete stainless steel filter vessels with isolation valves and pressure gauges.
For each line item, specify full product codes or fluid parameters, process temperature, target flow rate, and required filtration efficiency ratings.
Application suitability parameters are validated during technical review; commercial pricing, dispatch schedules, and inventory terms are established in official quotations.
Deliveries include factory quality test reports and compliance certificates with direct logistical forwarding to industrial customer facilities.
International Delivery Terms
We deliver Darlly filtration cartridges, capsule assemblies, and pressure vessels directly from manufacturing facilities with complete quality documentation.
