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FCCST10BB Aquafilter is a BIG BLUE 10 softening cartridge with ion exchange resin. It removes calcium and magnesium ions from water, replacing them with sodium ions, thus reducing the formation of scale. Recommended for protecting plumbing systems, household appliances, and heating systems. The cartridge has a final filter that prevents the escape of resin grains outside the filter.
FCCST10BB Aquafilter is a BIG BLUE 10 softening cartridge designed to effectively reduce water hardness in domestic and utility installations. This filter cartridge with ion exchange granulate removes calcium and magnesium ions from water, replacing them with sodium ions, helping to protect fittings, household appliances, plumbing systems, and heating systems against limescale buildup. It is a practical water filter supporting everyday water treatment and the expansion of a larger water filtration system.

Aquafilter FCCST10BB has been designed for use in 10" Big Blue housings. Its function is to reduce the compounds responsible for water hardness, primarily calcium and magnesium ions. In the ion exchange process, they are replaced with sodium ions, which significantly limits the formation of limescale deposits.
This solution works wherever hard water accelerates the wear of installations and equipment. The cartridge helps protect components that come into contact with water against limescale buildup, which can reduce equipment efficiency and hinder day-to-day operation.
The cartridge contains fine-grained ion exchange granulate with a high capacity to exchange calcium and magnesium ions for sodium ions. As a result, water softening is effective and well suited to applications related to protecting installations and equipment operating with utility water.
The cartridge design has been developed so that water enters at one end and exits at the other, passing through the entire ion exchange granulate bed. This flow direction allows the active surface area of the media to be used to the fullest and increases cartridge efficiency.
Additionally, the FCCST10BB model features its own final filter, which prevents granulate particles from escaping beyond the filter. This is an important design element that affects the cleanliness of operation of the entire filtration system.
The Aquafilter FCCST10BB softening cartridge is recommended for protecting household appliances, heating equipment, and plumbing systems against the accumulation of calcium and magnesium deposits. It can be used as part of a larger water treatment system, including where it is important to reduce the effects of hard water before further filtration stages.
It is a good choice for users who want to improve the operating conditions of a water installation and reduce deposits at water draw-off points and in equipment supplied with utility water.
To extend cartridge life, a housing with an FCPS or FCPP series mechanical cartridge should be installed before the housing with the carbon cartridge.
Cartridge life depends on water quality.
The FCCST10BB model is intended for 10" Big Blue housings. Before purchase, it is worth making sure that the filter housing complies with this dimensional standard. A properly selected housing ensures appropriate flow and safe cartridge operation.
In everyday use, the durability and effectiveness of the cartridge are mainly influenced by the quality of the feed water. The greater the hardness and the load of mechanical contaminants, the more important properly selected prefiltration becomes. Using a mechanical cartridge before the softening cartridge helps limit contaminant buildup and extends the effective operating life of the media.
The cartridge can operate with both cold and hot utility water, providing broad application possibilities in domestic installations and selected technical systems.
| Model | FCCST10BB |
|---|---|
| Brand | Aquafilter |
| Product type | Softening cartridge |
| Size / standard | Big Blue 10" |
| Filter media | Ion exchange granulate |
| Granulate grain size | 0.2–0.7 mm |
| Operating mechanism | Exchange of calcium and magnesium ions for sodium ions |
| Application | Cold and hot utility water |
| Purpose | Protection of plumbing systems, household appliances, heating equipment, and industrial machines against limescale |
| Final filter | Yes, it prevents granulate particles from escaping |
| Component approvals | NSF, FDA |
| Certificate | PZH hygiene certificate |
The cartridge is used to soften water by removing calcium and magnesium ions and replacing them with sodium ions. Its main purpose is to reduce limescale buildup in installations and equipment.
The FCCST10BB model is intended for 10-inch Big Blue housings.
Yes, the cartridge can be used for cold and hot utility water.
The cartridge reduces calcium and magnesium ions responsible for water hardness. As a result, it limits the formation of limescale deposits.
The ion exchange granulate performs ion exchange: calcium and magnesium ions are retained, and sodium ions are released into the water in their place. This process is responsible for the water-softening effect.
Using mechanical prefiltration, for example with FCPS or FCPP series cartridges, helps extend the life of the softening cartridge. This limits the inflow of solid contaminants that could worsen the operating conditions of the media.
Yes, its use helps reduce limescale buildup in household appliances, plumbing systems, heating equipment, and selected industrial machines.
Yes, the cartridge is equipped with its own final filter, which prevents granulate particles from passing beyond the filter.
Cartridge life depends on water quality, primarily on its hardness level and the amount of mechanical contaminants present in the feed water.
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FCCST10BB Aquafilter is a BIG BLUE 10 softening cartridge with ion exchange resin. It removes calcium and magnesium ions from water, replacing them with sodium ions, thus reducing the formation of scale. Recommended for protecting plumbing systems, household appliances, and heating systems. The cartridge has a final filter that prevents the escape of resin grains outside the filter.