3-STAGE CARBON WATER FILTER SOFTENER UNDER SINK 1/2 INCH THREAD CARBON

Three-stage under-sink filter for water purification, softening, and taste improvement

This set has been designed as a 3-stage pre-filter for installation under the sink. The system operates on three specialized Aquafilter cartridges, supporting daily household water preparation in the kitchen and helping protect plumbing and water-contact appliances.

The set provides:

• purification,
• water softening,
• chlorine reduction.

This solution can be used as a standalone filtration system or as a pre-treatment element in more advanced water treatment installations.

Original Aquafilter components and 1/2 inch internal thread

The set is based on original Aquafilter parts. The housings are equipped with a 1/2" internal thread, and the head has a brass thread. This design makes connection to the installation easier and ensures durability during everyday use.

The transparent 10" sump allows visual assessment of cartridge dirt level, which makes system monitoring easier. The product is made of high-quality materials, and the whole set has been manufactured and assembled in the European Union.

How 3-stage filtration works

The efficiency of the system comes from the arrangement of three complementary filtration stages. Each filter cartridge performs a different function, so the water is successively cleaned of mechanical contaminants, softened, and improved in sensory qualities.

I stage – FCPS20, 20-micron mechanical filtration

In the first stage, the FCPS20 cartridge made of polypropylene nonwoven with a precision of 20 microns is used. This is a sediment cartridge designed to retain mechanical impurities present both in tap water and in water from a private intake.

The cartridge effectively removes fine solid contaminants larger than 20 microns, such as silt, sludge, and similar deposits. As a result, it protects the next cartridges, the water installation, and fittings from premature wear and clogging.

FCPS20 is made of high-quality polypropylene nonwoven shaped to filter water through the entire structure of the cartridge. This type of solution is typically used as protection for carbon, softening, iron-removal cartridges, and the water installation itself.

FCPS20 cartridge life: 3–6 months, depending on water quality.

II stage – FCCST, softening on an ion-exchange bed

The second filtration stage is the FCCST cartridge with ion-exchange granules, whose task is to reduce water hardness. The cartridge removes calcium and magnesium ions from the water, replacing them with harmless sodium ions. This helps limit limescale buildup in the installation and appliances.

This solution is recommended for protecting household appliances, heating devices, and plumbing installations against the accumulation of calcium and magnesium deposits.

Advantages of the FCCST cartridge:

• the cartridge contains technologically treated ion-exchange granules with grain size from 0.2 to 0.7 mm,
• it is characterized by an exceptionally effective ability to exchange calcium and magnesium ions for sodium ions, softening the water,
• used for cold and hot utility water,
• prevents limescale buildup in household appliances and industrial machines,
• the cartridge components have been approved by NSF and FDA,
• the cartridge has a PZH sanitary certificate,
• designed so that water flowing through the cartridge penetrates the entire ion-exchange granulate bed, ensuring maximum performance,
• the cartridge effectively eliminates bad taste and odor from water, as well as toxic organic compounds,
• the cartridge also contains a polypropylene filter insert with a filtration precision of 10 microns, removing mechanical impurities such as sand, silt, or rust.

FCCST cartridge life: 1–3 months, depending on water quality.

III stage – FCCBL-S, carbon cartridge with coconut shell carbon

The third stage is the FCCBL-S cartridge, a granular carbon cartridge with carbon made from coconut shells. Its task is to reduce chlorine and chlorine-derived substances, as well as improve water taste and odor.

Granular cartridges do not cause a pressure drop in the installation, so they also work well where maintaining comfortable flow is important.

Advantages of the FCCBL-S cartridge:

• remove up to 99% of free chlorine from water and chlorine-derived substances,
• remove organic contaminants,
• remove phenol and benzene from water,
• contain carbon from coconut shells,
• remove heavy metals (Pb, Cu, Hg, Sr, Cs),
• soften water,
• support reduction of boiler scale,
• provide excellent filtration even with pressure drops,
• remove up to 85% of chlorinated pesticides,
• remove mechanical impurities down to 5 microns,
• improve the taste and odor of water,
• the highest lifespan of any carbon cartridge available on the market.

FCCBL-S cartridge life: 3–6 months, depending on water quality.

3-piece housing for easier cartridge replacement

The system uses an Aquafilter 3-piece in-line housing designed for quick installation and protection of the water system. It is a practical solution that makes servicing the set easier during regular cartridge replacement.

The main advantage of the 3-piece housing is simpler operation. To open the housing, it is enough to unscrew the ring itself. There is no need to rotate the entire sump, as in 2-piece solutions.

The housing provides:

• maximum tightness,
• easy cartridge replacement,
• resistance to everyday use,
• the possibility of visual inspection of cartridge dirt thanks to the transparent 10" sump.

The 3-piece Aquafilter housing consists of:

• a head with a brass thread,
• a ring,
• a transparent sump.

Pressure gauges and centering disks – easy installation and better operating control

The set includes two pressure gauges, which allow pressure readings. This is a practical feature that helps assess system performance and more easily determine when the cartridges need to be replaced.

The set also includes three antibacterial centering disks. The applied BACinix™ antibacterial technology uses nanosilver with bacteriostatic action, which helps prevent microorganism growth inside the filtration system, extends storage time, and protects against further microbiological contamination.

Centering disk:

• facilitates correct cartridge installation,
• prevents bacterial growth,
• reduces the risk of pathogenic microorganism growth,
• made of the highest-quality materials in the European Union,
• compatible with most cartridges available on the market,
• ensures proper cartridge positioning when tightening components,
• reduces the likelihood of cartridge damage during installation,
• BACinix technology based on nanosilver provides antimicrobial protection.

Set contents

The complete set includes all the basic elements needed to install and start the under-sink filtration system:

• 3 three-piece housings on a plate (frame) (easy to unscrew, resistant to pressure surges),
• 2 1/2 connections for installation hookup,
• 3 O-rings located inside the head,
• 3 centering disks,
• 2 pressure gauges,
• 2 x FCPS20 cartridge,
• FCCST cartridge,
• FCCBL-S cartridge,
• housing wrench,
• Teflon tape.

Additionally, the set includes a spare FCPS20 cartridge made of polypropylene nonwoven with a precision of 20 microns.

Technical specification