Solenis + NCH:<br/>Forward As One
NCH is now part of Solenis
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Closed Loop Filtration

Innovative chemistries, advanced monitoring and control systems, and expert support for your water treatment challenges.

Our Closed Loop Filtration Systems high-surface-area media allows particulate matter to penetrate deeply into the filter bed, but still be easily released on backwash. These systems remove smaller suspended particles than conventional sand filters, some models as low as 0.5 μm (microns), while operating at higher flow rates and with longer times between backwash. Our closed loop filters work with your chemical treatment program to protect your closed recirculating system from the harmful effects of corrosion and other suspended matter, and to ensure efficient and reliable system operation.

Our sales representatives, equipment specialists, and analytical laboratories will work together to help you select the right filtration system and troubleshoot problems. We also provide an extensive line of in-house manufactured products and technologies and stock an extensive line of replacement parts and consumables.

Why purchase from us?
  • Manufactured in-house
  • Filters from 5 – 0.5 μm depending upon model
  • Self-cleaning system
  • Preassembled
  • Preprogrammed for site-specific needs
  • Pretested for leaks
  • Regulated service and backwash flow rates
  • Fresh water backwash minimizes bleeding treated water
  • Reduces energy and maintenance costs
  • Professional service and installation
  • Suited for commercial and industrial applications

Check out our different models

High Performance Filtration (HPF)
  • Removes particles down to 5 μm
  • Water systems operating at less than 110°F (43.3°C)
  • High performance media
  • Allows particulate matter to penetrate deeply into the filter bed
  • Allows longer times between backwash
Super Performance Filtration (SPF)
  • Removes particles down to 0.5 μm
  • Water systems operating at less than 110°F (43.3°C)
  • Super performance media
  • Removes particulate matter closer to the surface of the filter bed
  • Allows for shorter times between backwash
Hot Water/High Pressure HPF Filter
  • Removes particles down to 5 μm
  • Water systems operating at less than 200°F (93.3°C)
  • Water systems operating at less than 250 psig
  • Sample valves on filter inlet and outlet
  • Regeneration counter
  • In-line rotometer to monitor and adjust filter flow rate
  • ASME coded carbon steel pressure vessel

Sustainably Clean

Our commitment extends beyond treating water. At Solenis, we are dedicated to transforming sustainability into action. Our tailored 360° Get Clean, Keep Clean™ Approach, will help your water treatment systems operate at peak efficiency with minimal downtime and maximum reliability while driving down the impact on the environment and your operational costs.

Learn more about sustainability

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Whether you're building a career that lets you make a real difference or need reliable answers to your toughest process and water sustainability questions, we're ready to deliver.

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Customer Stewardship

From award-winning innovation to recognized safety excellence, we bring partnership and value to every interaction.