Pentek Ws Series Disposable Water Softener Cartridges, Sodium-Form Resin, Multiple Sizes
| Model | Item # | Dimensions | Recommended Flow Rate | Capacity (Grains as CaCO3) |
|---|---|---|---|---|
| WS-10 | 155319-43 | 2.63" x 9.75" | 0.50 gpm | 750 |
| WS-20 | 155320-43 | 2.63" x 20" | 0.75 gpm | 1,500 |
| WS-20BB | 155321-43 | 4.50" x 20" (Big Blue) | 2.0 gpm | 4,500 |
Media: Cation, sodium-form resin, 20 x 40 mesh, R-SO3-Na+
Endcaps: Polypropylene
Pre-Filter: Polypropylene
Post-Filter: Polypropylene
Gaskets: Buna-N
Temp Rating: 40°F–100°F (4.4°C–37.8°C)
Application: Medical equipment, coffee/espresso machines, low-volume beverage and commercial food service equipment
Note: Do not use with water that is microbiologically unsafe or of unknown quality without adequate disinfection before or after the system
The Pentek WS Series is designed to allow optimal contact between water and resin surfaces, ensuring maximum ion exchange for effective softening. An internal expansion pad minimizes channeling, while a post-filter eliminates any potential for bypass — delivering consistent, softened water even in low-usage applications.
Built for low water usage, these disposable cartridges deliver softened product water using a sodium-based, non-solvent rinsed softening resin. This convenient cartridge- design provides an easy way to protect sensitive water delivery equipment from hardness and scale — making the WS Series ideal for medical equipment, coffee and espresso machines, low-volume beverage dispensers, and commercial food service equipment.
Available in three sizes to fit Pentek Slim Line, Standard, and Big Blue Series filter housings, the WS Series scales from small point-of-use applications up to higher-capacity systems. Select the model below that matches your housing size and required grain capacity.
