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Pentair SX2-21 Water Treatment System

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About the Product

Coffee Machine Depot USA: Authorized Distributor of Pentair's Premier Water Treatment System

Introducing the SX2-21 Dual-Housing Water Treatment System As an authorized distributor, Coffee Machine Depot USA is proud to offer the SX2-21, a state-of-the-art water treatment solution from Pentair. This dual-housing system boasts 10” drop-in cartridges designed to significantly reduce sediment to 0.5 microns and effectively cut down chlorine, taste, and odor. With a generous flow rate of 1.5 gallons per minute (gpm) and a capacity of 15,000 gallons, the SX2-21 incorporates the revolutionary ScaleX2® technology. This chemical-free scale inhibition feature utilizes Template-Induced Crystallization, ensuring optimal protection against calcium-carbonate scale formation.

Key System Advantages:

  • Enhanced Protection: ScaleX2® technology shields boilers, steam generators, and coffee brewing equipment from scale accumulation.
  • Cost and Maintenance Efficiency: Reduces the frequency and cost of maintenance while prolonging the lifespan of equipment.
  • Superior Filtration: Gradient-density sediment filtration combats dirt, rust, and debris down to 0.5 microns. High-capacity activated-carbon filtration improves water taste and shields against chlorine corrosion.
  • Ease of Installation and Maintenance: Features a sturdy, powder-coated mounting bracket, full-flow inlet shut-off valve, and simple filter replacement process, minimizing waste through reusable filter sumps.
  • Certified Excellence: Proudly NSF Certified under Standard 42, ensuring quality and safety.

Applications: Ideal for:

  • Steam & Combi Ovens: Suitable for boilers or steam generators up to 1.5 gpm. Note: Not recommended for flash type (boilerless) combi ovens.
  • Coffee Brewers: Optimized for single or combination applications up to 1.5 gpm.

Installation Guidelines:

  • Utilize only COLD water connections.
  • Adhere to specified temperature and pressure limits.
  • Ensure adequate clearance for filter maintenance.
  • Connect to ice- and steam-production lines only, excluding condenser water.
  • Comes with a comprehensive installation, operation, and maintenance manual. Activation or flushing not required.


  • Dimensions: 14.6"h x 11.3"w x 5.8"d
  • Inlet/Outlet Connection: 1/2” FNPT
  • Operating Pressure Range: 10 - 125 psi
  • Inlet Water Temperature Range: 35˚ - 100˚F
  • Shipping Weight: 12 lbs.

Performance Highlights:

  • Chlorine, Taste, and Odor Reduction: Up to 15,000 gallons
  • Flow Rate: 1.5 gpm
  • Sediment Reduction: 0.5 microns
  • Scale Inhibition: ScaleX2® technology

Replacement Cartridges:



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Maintenance Recommendations:

  • Change pre/post-filters and mineral cartridges biannually or as required based on capacity and water pressure.
  • Membrane lifespan varies; typically 12-18 months but can extend up to 3-5 years depending on conditions.

Important Notice: This commercial-grade product must be installed and serviced following the manufacturer's instructions. It is not intended for use with water of unknown quality or without proper disinfection pre- or post-system.

Ensuring Your Equipment's Longevity and Performance Coffee Machine Depot USA, through its partnership with Pentair, guarantees advanced water treatment solutions that meet the highest standards of quality and safety, enhancing the performance and lifespan of your coffee brewing and steam-generating equipment.


Warning: Proposition 65 Warning — Applies to the State of California Only. LEARN MORE >

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