Watts SF-20-425 20" x 4.5" String Wound Standard Filter Cartridges PureT (B890-BK34) 20" Filter Housing 3/4" NPT Blue/Black and rust staining in whole-house

and rust staining in whole-house water systems

Reinstall housing cap with lubricated o-ring

The relay can trigger solenoid valves

Amtrol 147-69 44-Gallon Steel RO Pressure Tank

Covers 0-0

Watts SF-20-425 20" x 4.5" String Wound Standard Filter Cartridges PureT (B890-BK34) 20" Filter Housing 3/4" NPT Blue/Black and rust staining in whole-houseThe Watts SF 20 425 delivers true depth filtration through precision string wound polypropylene construction, engineered for demanding commercial, whole house, and well water applications. This 20" x 4. 5" cartridge handles everything from mineral acids to caustic alkalis with exceptional dirt holding capacity and minimal media migration. SPECIFICATIONS Watts SF 20 425 Technical Details Dimensions 20" x 4. 5" Micron Rating 5 Micron Filter Media