The Watts FPMB50 Flow-Pro is a 40-inch melt blown polypropylene sediment cartridge engineered for industrial-scale water filtration with 50-micron depth filtration and NSF 42/372 certification. Built from 100% polypropylene with no media migration, this food-grade cartridge handles potable water, beverage production, chemical processing, and electronics applications up to 140°F and 40 psi differential pressure.
SPECIFICATIONS
Watts FPMB50 Cartridge Specs
Dimensions
40" × 2.5"
Industrial length cartridge
Filtration Rating
50 Micron
Depth filtration
Material
Polypropylene
Melt blown construction
Temperature Max
140°F
60°C continuous
Pressure Rating
40 psiD
Differential pressure
Certification
NSF 42/372
WQA tested
TECHNICAL DETAILS
Construction & Performance
| Model Number | Watts FPMB50 |
| Media Type | 100% polypropylene melt blown depth cartridge |
| Micron Rating | 50 micron nominal depth filtration |
| Chemical Resistance | Excellent compatibility across wide pH range |
| Media Migration | None – thermally bonded construction |
| Packaging | Individually shrink wrapped for cleanliness |
| Food Grade Status | FDA-compliant materials for food and beverage use |
COMPATIBILITY & APPLICATIONS
Where This Cartridge Works
The Watts FPMB50 fits standard 40-inch industrial cartridge housings with 2.5-inch outer diameter compatibility. Designed for potable water sediment reduction, beverage pre-filtration, chemical processing, metal finishing solutions, plating baths, electronics manufacturing rinse water, and other applications requiring high dirt-holding capacity and food-grade materials. The 50-micron rating makes this cartridge ideal as a first-stage sediment filter ahead of finer filtration or as a standalone solution for coarser particle removal in industrial and commercial water systems.
💧 Sizing note: At 40 inches, this is an industrial cartridge requiring compatible large-format housings. Watts Flow-Pro cartridges are individually wrapped to maintain cleanliness during storage and installation – a detail that matters in food-grade and pharmaceutical applications where contamination control is critical.
