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10 reasons to choose ONEFLOW from WATTS

May 12, 2021

OneFlow® is not a water softener, but uses an innovative technology (Template Assisted Crystallization (CAP) that improves tap water quality by neutralizing limescale. The OneFlow® media in the cartridge attracts calcium and magnesium minerals in water hard and turns them into microscopic crystals. Once formed, these crystals break down from the OneFlow® medium and flow freely through the piping system without sticking to internal surfaces. Therefore, hard lime is excluded in pipes and heating elements .


Good to Know: Water treated with OneFlow® retains the same composition as normal tap water. This is because no salt or other chemicals are added to the water. Unlike water that has been treated with a 'normal' water softener, OneFlow® ensures that important minerals such as calcium and magnesium are preserved.


In addition to the CAP cartridge, OneFlow ™ + also includes an integrated 20 micron carbon filter. This type not only protects your pipes against limescale, but also ensures that the water is free of unpleasant odors and flavors. This carbon filter does not remove manganese, iron, and other metals.

These with the 10 reasons.

Removal of existing lime

Eliminates the accumulations of lime existing in the pipes or other areas of the installation.


Does not require the addition of salts or chemical additives

No additives are added to the water.


Safe for pipes and household appliances

OneFlow® also removes existing limescale, leaving pipes and appliances free of limescale.


Without eleectricity

OneFlow® works autonomously. Therefore, there is no need for a socket.


Minimal maintenance

No maintenance contract. Depending on the type, replace the cartridge or media every two to three years.


No waste of water

No rinsing and therefore no unnecessary water consumption.


Energy saving

Without unnecessary water consumption. And less hard lime provides better heating system efficiency.


Innovative technology with better respect for the environment

No water is wasted and no electricity or salt is required.


Preserved water quality

All vital minerals remain in the water.


Simple and compact installation

OneFlow® is a compact device that, depending on the type, can be hung or upright.



Scale Prevention System, 38 l / min OneFlow Watts S0002182

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