Pentek - RFFE20-BB - 20" x 4.5" Radial-Flow Iron Reduction Filter
RFFE20-BB Radial-Flow Iron Reduction Filter
20" x 4.5" Big Blue cartridge engineered to remove dissolved iron and eliminate rust staining without adding chemicals to your water supply
The Pentek RFFE20-BB uses radial-flow media technology to oxidize and remove dissolved ferrous iron from well water, city water, and whole-house applications. Designed for 20" x 4.5" Big Blue housings, this cartridge reduces iron concentrations up to 3 ppm while preventing damage to pipes, water heaters, and fixtures throughout your home or facility.
Why the RFFE20-BB Stands Out
Radial-Flow Design
Water flows from the outside to the center, maximizing media contact time and filtration efficiency across the entire cartridge length
No Chemical Additives
Iron oxidation occurs through catalytic media without introducing phosphates, salts, or other chemicals into your drinking water supply
Stain Prevention
Stops the formation of rust-colored deposits on sinks, toilets, tubs, and fixtures caused by oxidized iron in water
System Protection
Reduces iron buildup in pipes, water heaters, and appliances, extending equipment life and maintaining flow rates
High Capacity
Handles 80,000 to 160,000 gallons depending on iron concentration, offering extended service intervals between cartridge changes
Performance-Tested
Rated for iron levels from 0.5 to 3 ppm with predictable capacity based on household water consumption and iron concentration
Expected Service Intervals by Iron Level
| Iron Level | Total Capacity | 1 Person (75 GPD) | 2 People (125 GPD) | 4 People (250 GPD) |
|---|---|---|---|---|
| 3 ppm | 26,000 gallons | 416 days | 208 days | 104 days |
| 2 ppm | 40,000 gallons | 640 days | 320 days | 160 days |
| 1 ppm | 80,000 gallons | 1,280 days | 640 days | 320 days |
| 0.5 ppm | 160,000 gallons | N/A | 1,280 days | 640 days |
Recommended Water Conditions
| Parameter | Requirement |
|---|---|
| pH Level | Greater than 7.0 |
| Dissolved Iron | Less than 3 ppm |
| Manganese | Less than 1 ppm |
| Silica | Less than 100 ppm |
| Iron Bacteria | None present |
| Hydrogen Sulfide | None present |
Installation & System Integration
The Pentek RFFE20-BB (model 155263-03) fits standard 20-inch x 4.5-inch Big Blue filter housings and should be installed on the main cold water line after the pressure tank or water meter. Ideal for whole-house filtration, well water treatment, and commercial applications where iron reduction is required. For optimal performance and extended cartridge life, install a 5-micron sediment filter upstream and a carbon block filter downstream to polish taste and remove any residual oxidized iron particles. Compatible with Pentek Big Blue housings including the #20 and similar 20" x 4.5" configurations from major manufacturers.
Pentek has manufactured reliable filtration media for residential, commercial, and industrial water treatment systems for over four decades, with every cartridge produced to consistent specifications for predictable performance.
RFFE20-BB Radial-Flow Iron Reduction Filter
20" x 4.5" Big Blue cartridge engineered to remove dissolved iron and eliminate rust staining without adding chemicals to your water supply
The Pentek RFFE20-BB uses radial-flow media technology to oxidize and remove dissolved ferrous iron from well water, city water, and whole-house applications. Designed for 20" x 4.5" Big Blue housings, this cartridge reduces iron concentrations up to 3 ppm while preventing damage to pipes, water heaters, and fixtures throughout your home or facility.
Why the RFFE20-BB Stands Out
Radial-Flow Design
Water flows from the outside to the center, maximizing media contact time and filtration efficiency across the entire cartridge length
No Chemical Additives
Iron oxidation occurs through catalytic media without introducing phosphates, salts, or other chemicals into your drinking water supply
Stain Prevention
Stops the formation of rust-colored deposits on sinks, toilets, tubs, and fixtures caused by oxidized iron in water
System Protection
Reduces iron buildup in pipes, water heaters, and appliances, extending equipment life and maintaining flow rates
High Capacity
Handles 80,000 to 160,000 gallons depending on iron concentration, offering extended service intervals between cartridge changes
Performance-Tested
Rated for iron levels from 0.5 to 3 ppm with predictable capacity based on household water consumption and iron concentration
Expected Service Intervals by Iron Level
| Iron Level | Total Capacity | 1 Person (75 GPD) | 2 People (125 GPD) | 4 People (250 GPD) |
|---|---|---|---|---|
| 3 ppm | 26,000 gallons | 416 days | 208 days | 104 days |
| 2 ppm | 40,000 gallons | 640 days | 320 days | 160 days |
| 1 ppm | 80,000 gallons | 1,280 days | 640 days | 320 days |
| 0.5 ppm | 160,000 gallons | N/A | 1,280 days | 640 days |
Recommended Water Conditions
| Parameter | Requirement |
|---|---|
| pH Level | Greater than 7.0 |
| Dissolved Iron | Less than 3 ppm |
| Manganese | Less than 1 ppm |
| Silica | Less than 100 ppm |
| Iron Bacteria | None present |
| Hydrogen Sulfide | None present |
Installation & System Integration
The Pentek RFFE20-BB (model 155263-03) fits standard 20-inch x 4.5-inch Big Blue filter housings and should be installed on the main cold water line after the pressure tank or water meter. Ideal for whole-house filtration, well water treatment, and commercial applications where iron reduction is required. For optimal performance and extended cartridge life, install a 5-micron sediment filter upstream and a carbon block filter downstream to polish taste and remove any residual oxidized iron particles. Compatible with Pentek Big Blue housings including the #20 and similar 20" x 4.5" configurations from major manufacturers.
Pentek has manufactured reliable filtration media for residential, commercial, and industrial water treatment systems for over four decades, with every cartridge produced to consistent specifications for predictable performance.
Original: $199.99
-65%$199.99
$70.00Description
RFFE20-BB Radial-Flow Iron Reduction Filter
20" x 4.5" Big Blue cartridge engineered to remove dissolved iron and eliminate rust staining without adding chemicals to your water supply
The Pentek RFFE20-BB uses radial-flow media technology to oxidize and remove dissolved ferrous iron from well water, city water, and whole-house applications. Designed for 20" x 4.5" Big Blue housings, this cartridge reduces iron concentrations up to 3 ppm while preventing damage to pipes, water heaters, and fixtures throughout your home or facility.
Why the RFFE20-BB Stands Out
Radial-Flow Design
Water flows from the outside to the center, maximizing media contact time and filtration efficiency across the entire cartridge length
No Chemical Additives
Iron oxidation occurs through catalytic media without introducing phosphates, salts, or other chemicals into your drinking water supply
Stain Prevention
Stops the formation of rust-colored deposits on sinks, toilets, tubs, and fixtures caused by oxidized iron in water
System Protection
Reduces iron buildup in pipes, water heaters, and appliances, extending equipment life and maintaining flow rates
High Capacity
Handles 80,000 to 160,000 gallons depending on iron concentration, offering extended service intervals between cartridge changes
Performance-Tested
Rated for iron levels from 0.5 to 3 ppm with predictable capacity based on household water consumption and iron concentration
Expected Service Intervals by Iron Level
| Iron Level | Total Capacity | 1 Person (75 GPD) | 2 People (125 GPD) | 4 People (250 GPD) |
|---|---|---|---|---|
| 3 ppm | 26,000 gallons | 416 days | 208 days | 104 days |
| 2 ppm | 40,000 gallons | 640 days | 320 days | 160 days |
| 1 ppm | 80,000 gallons | 1,280 days | 640 days | 320 days |
| 0.5 ppm | 160,000 gallons | N/A | 1,280 days | 640 days |
Recommended Water Conditions
| Parameter | Requirement |
|---|---|
| pH Level | Greater than 7.0 |
| Dissolved Iron | Less than 3 ppm |
| Manganese | Less than 1 ppm |
| Silica | Less than 100 ppm |
| Iron Bacteria | None present |
| Hydrogen Sulfide | None present |
Installation & System Integration
The Pentek RFFE20-BB (model 155263-03) fits standard 20-inch x 4.5-inch Big Blue filter housings and should be installed on the main cold water line after the pressure tank or water meter. Ideal for whole-house filtration, well water treatment, and commercial applications where iron reduction is required. For optimal performance and extended cartridge life, install a 5-micron sediment filter upstream and a carbon block filter downstream to polish taste and remove any residual oxidized iron particles. Compatible with Pentek Big Blue housings including the #20 and similar 20" x 4.5" configurations from major manufacturers.
Pentek has manufactured reliable filtration media for residential, commercial, and industrial water treatment systems for over four decades, with every cartridge produced to consistent specifications for predictable performance.
