The 9 Best Dual Gradient Water Filter

This Pentek DGD-5005-20 spun polypropylene filter cartridge reduces sand, silt, scale, and rust particles in residential, commercial, and municipal drinking water. It has two separate gradient layers for higher particle reduction efficiency and dirt-loading capacity than standard spun or string-wound cartridges. The nominal filtration rating of the pre-filter layer is 50 microns, and the rating of the post-filter layer is 5 microns. The filter is made of spun polypropylene fibers for resistance to chemicals and bacteria. It has an initial pressure drop of less than 1 pound per square inch (psi) at a flow rate of 20 gallons per minute (gpm), and operates over a temperature range of 40 to 145 degrees F (4.4 to 62.8 degrees C). This spun polypropylene filter cartridge meets National Sanitation Foundation/American National Standards Institute (NSF/ANSI) standard 42 for quality assurance, and is used for treatment of residential, commercial, and municipal drinking water.

This is listing is for two filters. DGD Series cartridges are manufactured from 100% pure polypropylene and are sized for use in our Big Blue® filter housings. DGD Series cartridges are designed for purity and will not impart taste, odor or color to the liquid being filtered. Additionally, the polypropylene construction provides superior chemical resistance and is not prone to bacterial attack. The DGD Series’ advanced design combines selective final filtration with appropriate pre-filtration to achieve up to three times the dirt-holding capacity of similar size sediment cartridges and even greater capacity than standard spun or string-wound cartridges. This performance enhancement is achieved by combining two separate gradient layers in one filter. The larger diameter of the pre-filter reduces the particle load to the post filter, allowing it to operate at higher velocities. The effective filter depth is increased to a full 233% of standard spun-polypropylene or string-wound filters. This increased depth provides for very high particulate reduction efficiencies and added loading capacity. The unique design and performance characteristics of the DGD Series cartridges make them an excellent choice for all residential, rural, municipal and commercial applications.

Whole house heavy duty filter cartridge.

The Aquatic Life 5-Micron dual density gradient sediment pre-filter cartridge is highly recommended due to longer life and cost effectiveness. Precision manufactured from 100% pure Polypropylene fibers, the fibers have been carefully spun together to form a true gradient density from outside to inside surfaces, ensuring complete removal of particulate matter such as dirt, sand, silt and rust. 20″ x 4.5″ standard size cartridge is self-sealing for a tight fit in home filtration and reverse osmosis units. The Aquatic Life 5-Micron Carbon Block Filter is unsurpassed at removing chlorine, sediment, bad taste, bad odor and organic contaminants – its precision molded shape and fine mesh wrap prevents the release of carbon fines, as well as eliminating the channeling and bypass of water through the filter cartridge. 20″ x 4.5″ standard size cartridge includes rubber gaskets at both ends to ensure 100% water flow-through.

6 x Pentek 155358-43, DGD-5005-20 Big Blue 20″ x 4-1/2″ 50/5 Micron Sediment Melt Blown Filters Cartridges Dual Gradient Polypropylene by CFS These compatible cartridges are manufactured from 100% pure polypropylene and are sized for use in our Big Blue filter housings. These cartridges are designed for purity and will not impart taste, odor or color to the liquid being filtered. Additionally, the polypropylene construction provides superior chemical resistance and is not prone to bacterial attack. The advanced design combines selective final filtration with appropriate pre-filtration to achieve up to three times the dirt-holding capacity of similar size sediment cartridges and even greater capacity than standard spun or string-wound cartridges. This performance enhancement is achieved by combining two separate gradient layers in one filter. The larger diameter of the pre-filter reduces the particle load to the post filter, allowing it to operate at higher velocities. The effective filter depth is increased to a full 233% of standard spun-polypropylene or string-wound filters. This increased depth provides for very high particulate reduction inefficiencies and added loading capacity. The unique design and performance characteristics of this cartridges make them an excellent choice for all residential, rural, municipal and commercial applications.**Please note this is a compatible spare part and the manufacturers’ names and part numbers have been used for reference purposes only.

Sediment filter – Dual Gradient Density 25 / 1 micron 20″ x 4.5″ by CFS Whole House Sediment filter – Dual Gradient Density 25 / 1 micron – 20″ x 4.5″ 25 micron outer layer, 1 micron inside layer sediment filter. Reduces dirt, sand, silt, and rust particles. 2 separate gradient density layers provide triple the dirt-holding capacity of similar sized filters. Designed for purity with chemical and bacteria resistance Fits Big Blue 20″ x 4.5″ filter housing, and Home Master Water Filter models #HMF2SdgB1, #HMF2SdgC 25 micron outer layer, 1 micron inside layer sediment filter. Reduces dirt, sand, silt, and rust particles. 2 separate gradient density layers provide triple the dirt-holding capacity of similar sized filters Designed for purity with chemical and bacteria resistance Fits Big Blue 20″ x 4.5″ filter housing, and Home Master Water Filters

Conclusion

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