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Pentek 155320-43 WS-20 Water Softening Filter

Pentek 155320-43 WS-20 Water Softening Filter

Item SKU: 155320-43

MFG ID: 155320-43 | UPC: 688580784178

The WS series cartridges provide softened water in a convenient cartridge-style design. With its long filter life, the Pentek 155320-43 WS-20 Water Softening Filter makes a valuable addition to the water filter system. It combines quality and functionality with durability for a lifetime of customer satisfaction.


  • The Pentek WS-20 water softener filter cartridge contains FDA Grade Softener Resin.
  • The Pentek WS-20 cartridges provide softened water in a convenient cartridge-style design.
  • The Pentek WS-20 softening water filters utilize a bed of sodium form cation resin beads to reduce hardness and scale deposits.
  • The Pentek WS-20 convenient and space-saving design means that softened water can be provided easily and cost effectively at the exact point of need.
  • Note: For drinking water applications, do not use where the water is microbiologically unsafe or with water of unknown quality without adequate disinfection before or after the system.


  • Dimensions: 20" x 2-5/8" (508 mm x 67 mm)
  • Recommended Flow Rate: 0.75 gpm (2.8 L/min)
  • Capacity: 1,500 (Grains as CaCO3)
  • Temperature Rating: 100°F (37.8°C)
  • Pentek WS-20 Water Softener Filter Materials of Construction:
  • Filter Media: Standard Softener Resin
  • (Cation, sodium-form resin, 20 x 40 mesh, R-SO3 -Na+)
  • End Caps, Pre-Filter, and Post-Filter: Polypropylene
  • Gasket: Buna-N

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