Pentair 155770-43 Cartridge Filter 5 Micron 40 Inch

Product Description

The PENTAIR 155770-43 is a thermal-bonded polypropylene cartridge filter designed for plumbing filtration applications. It measures 40 inches in length with a 2.5-inch outside diameter and delivers 5-micron filtration to capture sediment from water supply lines. The thermal-bonded construction integrates the filter media without adhesives or binders, maintaining consistent pore structure throughout the cartridge. Rated for service up to 175 degrees F, this filter is suited for both hot and cold water filtration systems. Licensed plumbers and water treatment technicians install this type of cartridge in standard filter housings as part of whole-house or point-of-entry filtration setups.

This cartridge filter is intended for residential and light commercial plumbing systems where sediment reduction is required at the point of entry or point of use. It fits into standard 40-inch filter housings and is commonly used upstream of water heaters, softeners, and other treatment equipment to protect downstream components from particulate fouling. The all-polypropylene construction, including the core material, makes it compatible with a wide range of water chemistry conditions.

Key Features

• 5-micron rating for effective sediment reduction from water supply
• Thermal-bonded polypropylene media — no adhesives or binders that can leach into water
• Full polypropylene construction including core for broad chemical compatibility
• 40-inch length fits standard big-blue and comparable large-format filter housings
• Rated to 175 degrees F for use in both cold and hot water filtration lines
• 2.5-inch outside diameter for correct fit in standard housing inner dimensions

Compatibility

Designed as an OEM-style replacement cartridge for standard 40-inch plumbing filter housings used in residential and light commercial point-of-entry sediment filtration systems.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and IPC guidelines. Shut off the main water supply and relieve system pressure before opening the filter housing. Inspect the housing o-ring and replace it if worn before seating the new cartridge. Do not exceed the cartridge temperature or pressure rating for the housing in use.