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Water Quality & Conditioning


Salt-Free Scale Prevention and Water Filtration

Lead Free* Models Available


Connection Sizes: 1-in, Flow Rates: From 0.5 gpm to 10 gpm (1.9 lpm to 37.85 lpm)


The OneFlow+ system is an economical and environmentally friendly physical water treatment technology that protects pipes, extends the life of appliances, and provides better tasting water through filtration. The OneFlow+ system is a dual cartridge-based system with a radial flow 20 micron carbon block cartridge which reduces sediment, chlorine taste and odor, and an integrated OneFlow scale prevention cartridge.

OneFlow uses template assisted crystallization (T.A.C.) to attract hardness minerals and convert them into harmless, inactive microscopic crystal particles. These crystals stay suspended in the water, flowing through the system without attaching to pipe and fixtures. The system requires very little maintenance, no backwashing, no salt and no electricity. Typical hardness problems, especially build-up of scale in heating elements, pipes, water heaters, boilers and on fixtures are no longer a concern.
OneFlow is not a water softener. It does not add chemicals. It is a scale prevention device with proven third party laboratory test data and years of successful commercial, residential and foodservice applications. OneFlow is the intelligent scale solution and is a great alternative to water softening (ion exchange) or scale sequestering devices.

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Disclaimer: Watts product dimensions in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.

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*The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight.

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