DGD-5005-20 Pentek Whole House Filter Replacement Cartridge by Tier1

The P5-20BB Tier1 sediment water filter is an affordably priced option that ensures you serve only high-quality water from every faucet throughout your home! Built to capture and filter virtually all types of sediment particles, 5 microns or larger, out of the water in your home. In addition, these filters help to ensure your water tastes great while reducing the risk of sediment corrosion in your fixtures and appliances. Get the high-quality sediment filters you deserve by ordering P5-20BB Tier1 sediment water filters from us today.

This Tier1 comparable filter matches the Pentek DGD-5005-20 specification -- a dual-gradient depth filter designed for 4.5-inch x 20-inch Big Blue housings. The dual-gradient construction is what distinguishes this cartridge from standard single-stage sediment filters, providing multi-stage sediment capture in a single cartridge body.

Dual-Gradient Filtration Explained

Most sediment filters are wound to a single nominal micron rating throughout the cartridge. The DGD-5005-20 uses a dual-gradient design: the outer layers are wound to a coarser 50-micron rating to capture large particles first, while the inner core is wound to 5 microns to capture finer sediment before water exits the cartridge. This gradient approach significantly extends filter life by distributing particulate load across the full depth of the filter rather than loading the surface.

Key Specifications

Advantages Over Single-Stage Sediment Filters

The dual-gradient design offers two primary advantages over a single-micron filter: longer service life (the coarse outer stage takes the bulk sediment load, preserving the fine inner stage) and more thorough sediment removal in a single cartridge (no need to stack a 50-micron pre-filter ahead of a 5-micron final stage).

Due to the dual-gradient design, this filter typically lasts longer than a standard single-stage cartridge under equivalent conditions. Inspect based on pressure differential across the housing (a notable pressure drop indicates filter loading) or on a scheduled 3 to 6-month interval for most applications. Well water with heavy silt may require more frequent changes.