
The DGD-2501-20 is a premium gradient density cartridge designed to deliver exceptional sediment filtration in high-flow water systems.
Made from 100% pure polypropylene and built for Pentair Big Blue housings, it combines dual filtration layers in a single cartridge, offering both fine and coarse particle removal with a nominal 1-micron rating.
Download PDFEngineered for powerful performance and long-lasting reliability, the DGD-2501-20 stands out from standard sediment filters by delivering cleaner water with fewer replacements and better flow rates.
Dual-gradient density captures both large and fine particles, offering up to 3x the dirt-holding capacity of standard filters. Ideal for water with mixed contaminants.
Its extended 20″ length and increased media depth reduce the need for frequent cartridge changes, saving time and money in the long run.
Made from 100% pure polypropylene, it resists chemicals without leaching taste, odor, or color, ensuring consistent purity for every application.
Perfectly sized for Pentair Big Blue housings, this filter is trusted for residential, rural, municipal, and light industrial use.
| Model Number | Part Number | Maximum Dimensions | Rating (Nominal)* | Initial ∆P (PSI) @ Flow Rate (Gpm)* |
|---|---|---|---|---|
| DGD-2501 | 155359-43 | 4.50" x 9.88" (114 mm x 251 mm) | 1 micron | <1 psi @ 10 gpm (<0.1 bar @ 38 Lpm) |
| DGD-5005 | 155357-43 | 4.50" x 9.88" (114 mm x 251 mm) | 5 micron | <1 psi @ 10 gpm (<0.1 bar @ 38 Lpm) |
| DGD-7525 | 155355-43 | 4.50" x 9.88" (114 mm x 251 mm) | 25 micron | <1 psi @ 10 gpm (<0.1 bar @ 38 Lpm) |
| DGD-2501-20** | 155360-43 | 4.50" x 20" (114 mm x 508 mm) | 1 micron | <1 psi @ 20 gpm (<0.1 bar @ 76 Lpm) |
| DGD-5005-20 | 155358-43 | 4.50" x 20" (114 mm x 508 mm) | 5 micron | <1 psi @ 20 gpm (<0.1 bar @ 76 Lpm) |
| DGD-7525-20 | 155356-43 | 4.50" x 20" (114 mm x 508 mm) | 25 micron | <1 psi @ 20 gpm (<0.1 bar @ 76 Lpm) |
Have questions or need help finding the right Pentair filter? Contact us today for expert guidance, personalized recommendations, or to place your order.

The MicroGuard Pre-Cartridge is used as an initial filtration stage in a multi-stage system. It captures larger sediment particles before they reach the main cartridges. This helps reduce buildup in downstream components and supports smoother system operation. It is commonly used in light commercial and small business filtration setups.