Pentair 355220-43 Cartridge Filter 50 Micron Big Blue

Product Description

The PENTAIR 355220-43 is a string-wound, fibrillated polypropylene cartridge filter rated at 50 microns, designed for sediment reduction in plumbing filtration systems. It measures 4-1/2 inches in outside diameter and 9-7/8 inches in length, sized for Big Blue style filter housings. Rated to a maximum of 8 psi and suitable for water temperatures between 40 degrees F and 165 degrees F, this cartridge is a standard replacement for residential and light commercial whole-house or point-of-entry sediment filtration applications. Installation is performed by licensed plumbers or qualified water treatment technicians.

This cartridge is used in Big Blue filter housings for whole-house sediment filtration at point-of-entry installations. It targets sediment particles at the 50-micron level, making it appropriate as a pre-filter stage in residential or light commercial systems where sand, silt, and coarse particulate are present in the supply line. Its fibrillated polypropylene construction is compatible with cold and hot water supply lines within its rated temperature range.

Key Features

• 50-micron filtration rating targets sediment including sand, silt, and coarse particulate
• String-wound fibrillated polypropylene construction for consistent depth filtration
• 4-1/2 inches OD fits standard Big Blue filter housings
• Rated for water temperatures from 40 degrees F to 165 degrees F
• Maximum operating pressure of 8 psi
• Lightweight at 1.31 pounds for easy cartridge swap

Compatibility

Designed as a replacement cartridge for Big Blue style filter housings used in residential and light commercial point-of-entry sediment filtration systems.

Installation Notes

Cartridge replacement is typically performed by a licensed plumber or water treatment technician. Shut off the supply water and relieve system pressure before opening the filter housing. Follow local plumbing codes and the housing manufacturer guidelines for cartridge seating and housing torque. Inspect the housing O-ring for wear or damage each time the cartridge is replaced.