512-734-6241   AUSTIN / sAN aNTONIO

Dust, FUME, MIST COLLECTION AND INDUSTRIAL VENTILATION SYSTEMS

process environments I. Ltd. llp

800-495-2249  Toll Free

281-316-2500    HOUSTON

Process environments I ltd llp   

281-316-2500    or     800-495-2249

Privacy Policy

Dust Collectors  •  Fume Extractors  •  Mist Collectors •  Industrial Ventilation
Dust Collection System Design  •  Explosion Venting  •  System Ductwork 


Sheet Metal Fabrication  •  Turn-Key Installations  •  Replacement  Filters 
 Replacement Parts  •  Maintenance Contracts

Parts and Service

For genuine Donaldson replacement filters and parts, CALL:

PHONE:  281-316-2500

TOLL FREE:  800-495-2249

Email Sales:  sales@peillp.com 



P031791-016-426

DFO ULTRA-WEB SB CARTRIDGE (11.36" x 14.36") OD x 26.00"L

Ultra-Web Spunbond Oval Cartridge Filter, Open/Open Endcaps for Downflo Oval, Downflo WorkStation, Downflo Containment System and other brands.

P199476-016-426

DFO ULTRA-TEK CARTRIDGE (11.36" x 14.36") OD x 26.00"L

Ultra-Tek Oval Cartridge Filter, Open/Open Endcaps for Downflo Oval, Downflo WorkStation, Downflo Containment System and other brands.

P199419-016-436

DFO FIBRA-WEB FR CARTRIDGE (11.36" x 14.36") OD x 26.00"L

Fibra-Web Flame Retardant Oval Cartridge Filter, Open/Open Endcaps for Downflo Oval, Downflo WorkStation, Downflo Containment System and other brands.

P199418-016-433

DFO TORIT-TEX CARTRIDGE (11.36" x 14.36") OD x 26.00"L

Torit-Tex Oval Cartridge Filter, Open/Open Endcaps for Downflo Oval, Downflo WorkStation, Downflo Containment System and other brands.

P199475-016-340

DFO ULTRA-WEB NL FR CARTRIDGE (11.36" x 14.36") OD x 26.00"L

Ultra-Web No Liner Flame Retardant Oval Cartridge Filter, Open/Open Endcaps for Downflo Oval, Downflo WorkStation, Downflo Containment System and other brands.

P199474-016-340

DFO ULTRA-WEB NL CARTRIDGE (11.36" x 14.36") OD x 26.00"L

Ultra-Web No Liner Oval Cartridge Filter, Open/Open Endcaps for Downflo Oval, Downflo WorkStation, Downflo Containment System and other brands.

P199413-016-436

DFO FIBRA-WEB CARTRIDGE (11.36" x 14.36") OD x 26.00"L

Fibra-Web Oval Cartridge Filter, Open/Open Endcaps for Downflo Oval, Downflo WorkStation, Downflo Containment System and other brands.

P191920-016-436

DFO ULTRA-WEB FR CARTRIDGE (11.36" x 14.36") OD x 26.00"L

Ultra-Web Flame Retardant Oval Cartridge Filter, Open/Open Endcaps for Downflo Oval, Downflo WorkStation, Downflo Containment System and other brands.

P191889-016-436

DFO ULTRA-WEB CARTRIDGE (11.36" x 14.36") OD x 26.00"L

Ultra-Web Oval Cartridge Filter, Open/Open Endcaps for Downflo Oval, Downflo WorkStation, Downflo Containment System and other brands.

downflo oval dfo  -  dUst collector CARTRIDGE FILTERS


Ultra-Web Media Technology - Proprietary Technology that Performs

Proven and proprietary Ultra-Web® technology delivers longer filter life, cleaner air and greater cost savings than other types of cartridge filter media. Made with an electrospinning process that produces a very fine, continuous, resilient fiber of 0.2 - 0.3 micron in diameter, Ultra-Web forms a permanent nanofiber web with very fine interfiber spaces that trap dust on the surface of the media.

Donaldson® Torit® filters keep dust collectors operating at peak performance. Offered for a full range of dust, fume and mist collection applications, Donaldson Torit filters—especially proprietary Ultra-Web® filters— outperform and outlast other filters. When it comes to Ultra-Web filters, there is no equal in performance and value.

All filters are not alike. Equip a dust collector with a generic replacement filter and expect the performance of that collection system to decline. What’s worse, generic replacement filters selected for their initial lower purchase price often waste manufacturers’ time, productivity and money in the long run.


  • Superior media is more efficient in capturing submicron dust particles
  • Longer filter life and better pulse cleaning due to surface loading technology
  • Lower energy and less compressed air use with better pulse cleaning and lower operating pressure drop
  • MERV 15 and 14 filtration efficiencies to meet specific application needs

P199411-016-340

DFO CELLULEX CARTRIDGE (11.36" x 14.36") OD x 26.00"L

Cellulex Oval Cartridge Filter, Open/Open Endcaps for Downflo Oval, Downflo WorkStation, Downflo Containment System and other brands.