Pentair Pentek WS-20BB, 20" Big Blue Water Softener Cartridge, 20" x 4.5"
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- REDUCES HARD WATER SCALE - Sodium-form cation resin with 4,500-grain capacity (as CaCO3) reduces calcium and magnesium that cause scale buildup in pipes, fixtures, and appliances
- FITS STANDARD BIG BLUE HOUSINGS - Designed for 20" x 4.5" Big Blue filter housings; drop-in replacement with no modifications or adapters required for quick cartridge changes
- BUILT-IN RESIN PROTECTION - Polypropylene pre-filter and post-filter contain the 20 x 40 mesh resin media, preventing resin migration and ensuring cleaner, consistent water output
- RELIABLE CONSTRUCTION - Polypropylene endcaps and Buna-N gaskets provide a secure seal; internal expansion pad maintains cartridge integrity throughout the full service life
- RECOMMENDED OPERATING CONDITIONS - Flow rate of 2.0 gpm (8.5 Lpm) for optimal contact time; operating temperature range of 40-100 degrees F (4.4-37.8 degrees C) for cold water applications
Estimated shipping
Select a product to estimate shipping.The Pentair Pentek WS-20BB water softener cartridge is engineered to reduce hardness minerals from your water supply using sodium-form cation exchange resin. Hard water causes scale deposits that restrict flow in pipes, leave spots on fixtures and glassware, and shorten the service life of water heaters, dishwashers, and other appliances. This cartridge addresses those problems with 4,500 grains of softening capacity in the industry-standard Big Blue 20" x 4.5" format.
The WS-20BB uses 20 x 40 mesh cation resin held in place by polypropylene pre-filter and post-filter layers that prevent resin from entering your water lines. Polypropylene endcaps and Buna-N gaskets ensure a proper seal within compatible Big Blue housings. An internal expansion pad accommodates resin movement during operation, maintaining consistent performance from first use through end of service life.
This is a single-use cartridge designed for point-of-entry or point-of-use cold water applications between 40-100 degrees F. For optimal hardness reduction, maintain a flow rate at or below the recommended 2.0 gpm (8.5 Lpm) to allow sufficient resin contact time. Replace the cartridge when hardness levels in treated water begin to rise.
Product details
| Main Specification | |
|---|---|
| Product Benefits | Reduces hardness or minerals or and scale deposits in low flow rate applications or Protects sensitive water delivery equipment or Provides superior protection for medical equipment or coffee and espresso appliances or beverage and food service machines See more |
| Manufacturer | Pentair Industries |
| Unit Count | 1 Count |
| Brand | Pentek |
| UPC | 051678321034 |
| Number of Items | 1 |
| Product Dimensions | 4.5"D X 4.5"W X 20"H |
| External Testing Certification | Fda |
| Material | Cation Resin |
| Global Trade Identification Number | 00051678321034 |
| Item Weight | 9.7 pounds |
| Technical Details | |
| Manufacturer Part Number | 155321-43 |
| Material Type | Cation Resin |
| Item details | |
| Item Type Name | Big Blue Water Softener Cartridge or 20" x 4.5 |
| Model Number | WS-20BB |
| Measurements | |
| Item Dimensions D x W x H | 4.5"D x 4.5"W x 20"H |
| Others | |
| Product Type | Big Blue Water Softener Cartridge or 20" x 4.5 |
| Item Highlight | 4 or Sodium-Form Cation Resin Reduces Hard Water Scale in Pipes and Appliances or 500-Grain Capacity |