Pentair 155247-43 Gac Cartridge Filter 25 Micron 20 Inch

Product Description

The PENTAIR 155247-43 is a granular activated carbon (GAC) cartridge filter designed for residential and light commercial plumbing filtration systems. Measuring 20 inches in length with a 4.5-inch outside diameter, it operates on a radial flow design that maximizes contact time between water and the activated carbon media. Rated at 25 microns, the cartridge reduces sediment, taste, and odor from potable water lines. It is sized for standard whole-house or point-of-entry filter housings and is typically installed by licensed plumbers during new construction or system upgrades.

This cartridge is suited for residential whole-house water filtration applications and light commercial water treatment systems where sediment reduction and taste and odor improvement are the primary treatment goals. The radial flow configuration allows water to pass through the full depth of the GAC bed, improving contaminant contact. Operating temperature range is 40 degrees F minimum to 100 degrees F maximum, making it appropriate for cold and warm water supply lines in conditioned spaces. It ships as a single unit and fits standard-diameter filter housings that accept a 4.5-inch OD, 20-inch cartridge.

Key Features

• Granular activated carbon media reduces sediment, taste, and odor
• 25-micron filtration rating for effective particulate reduction
• Radial flow design maximizes media contact time
• 4.5-inch OD by 20-inch length fits standard big-blue or equivalent housings
• Rated for water temperatures between 40 degrees F and 100 degrees F
• Single-cartridge packaging with a minimum order quantity of 1

Compatibility

Designed as an OEM-style replacement cartridge for standard 4.5-inch OD by 20-inch plumbing filter housings used in residential and light commercial point-of-entry or whole-house water treatment systems.

Installation Notes

Installation is typically performed by a licensed plumber in accordance with local plumbing codes and IPC guidelines. Shut off the water supply and relieve line pressure before opening the filter housing to replace the cartridge. Avoid overtightening the housing sump, as this can damage the o-ring seal and cause leaks. After installation, flush the cartridge for several minutes to purge loose carbon fines before returning the system to service.