Watts Water Quality Solutions

Flow-Max Pleated Cartridges

Get more filtration for the money with Flow-Max® pleated cartridges for high flow, long life, greater sediment removal and reduced filtration costs.

Flow-Max filter cartridges outperform wound, spun, melt blown, resin bonded and other "depth" type filter elements because our cartridges are pleated to provide increased surface area and longer life.

Flow-Max filter cartridges outperform other pleated elements because our high-performance filter media is systematically produced using 100% synthetic fibers, with no binders or additives to leave a residue, foam or contaminate.

Lower pressure drop is another significant advantage, using Flow-Max pleated cartridges, which allows for increased flow
rates and the use of smaller filter housings to reduce capital equipment costs.

Our filter media is dramatically thicker than other products. For this reason, Flow-Max cartridges provide "depth" filtration for greater sediment removal, along with more surface area with our pleated design.

A multi-ply laminate is used with our sub and one micron grades for longer life and greater solids removal.

Multi-ply Laminate


Temperature range: 40ºF - 140ºF (4.5ºC - 60ºC)
Media: 100% chemical resistant PP, PE and PET, with no binders or additives
Center tubes: PP (standard & BB); PVC, Jumbo
End caps: Plastisol (std & B-B); Molded, Jumbo
Packaging: All cartridges are shrink wrapped for purity
Flow rates: see data

Flow-Max standard cartridges are available in a wide rnge of micron ratings and lengths.

Flow-Max full-flow cartridges for 10" & 20" B-B housings.

Flow-Max jumbo cartridges for Flowmatic & Hurricane housings.

Washable & Reusable

Flow-Max® cartridges are washable and reusable, five micro and up to reduce filtration costs. For best results, direct spray into pleats to dislodge sediment. Or, let dry and brush off filter cake from surface of the media.

All Flow-Max® cartridges are individually shrink wrapped for purity.

Flow-Max® - HP

All Poly Cartridges for critical filtration and high purity water.

We now offer a complete line of pleated polypropylene filter cartridges for a wide variety of applications. Cartridges are made entirely of polypropylene, including filter media, center tubes and support materials. All components are fusion-bonded, eliminating adhesives which can potentially leach. Cartridges are absolute rated and exceed 99.9% efficiency at stated micron rating. An assortment of end cap configurations are available, including double-open-end (DOE), fin, 222 and 226 cartridges with o-ring seals. 2-1/2" OD. For more details please see product features described below. For temperatures to 140°F (60°C).
* Now Beta 5000 rated


  • 100% polypropylene
  • Non-leaching, FDA listed materials
  • High throughput / long filter life
  • Absolute rated (99.99% Beta 5000 efficient)
  • Resistant to aggressive chemicals
  • Pleated for more surface area
  • Wide range of micron ratings

Melt Blown Polypropylene Filter Cartridges

Spun poplypropylene filter cartridges. Ideal for aggressive chemicals and general filtration requirements when depth filtration is required. Available in wide range of lengths and micron ratings.

Cartridges rated for temperatures to 125ºF (52ºC). Polypropylene construction for excellent chemical resistaance. No binders, additives, lubricants to leach to water. 5 GPM maximum flow rate for five micro cartridge, 9-3/4" x 2-1/2" OD.

Wound Filter Cartridges

Full line of wouond filter cartridges offering excellent depth filtration. Available in FDA polypropylene, 304L stainless, 316L stainless and tin center tubes. 2.5" O.D. All cartridges are shrink wrapped, bagged or in sleeves.

Flowmatic® Pleated

Twenty micro pleated cellulose cartridges. 2.5" OD X 9-3/4" length. Twenty micron impregnated cartridges. 2.5" OD X 9-3/4" length.