The AQUA Logic Inline Duo is a compact two-stage water filter set with separate carbon and ultra elements. Suitable for use under the kitchen sink or in campers, caravans and boats.
The Inline Duo consists of two connected 10” filter housings containing a carbon filter and an ultra filtration membrane. Since carbon and micro are designed as separate elements, they can be replaced individually.
Filter characteristics
The AQUA Logic Inline Duo is a water filter that can be mounted between the water pipes of an existing pressurized water system. The filter improves the taste and quality of drinking water and is ideal for use at home, in caravans, campers, or yachts.
The Inline Duo consists of two connected filter housings containing
separate filter elements:
1. Activated Carbon cylinder with a pore size of 1 micron
Activated carbon is an organic material that reduces substances affecting odour, colour and taste, as well heavy as metals, chlorine, pharmaceutical residues and other chemicals.
2. Ultrafiltration membranes with a pore size of 0.01–0.03 microns (full-size)
Ultrafiltration membrames providing effective filtration against:
- Pathogenic organisms: Bacterial reduction of >99.9999% (including Cholera, Shigella, Typhus, Klebsiella terrigena, Enterococci, Legionella, and E. coli)
- Cysts/Protozoa: (including Giardia and Cryptosporidium)
- Micro- and Nano-plastics: Removes particles as small as 0.03 microns (30 nanometers)
All parts are BPA-Free. The filter works without the addition of chemicals and is made up of maintenance-free and corrosion-free parts.
How to use
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1. Connecting the filter
Screw the supplied 3/8 inch hose barbs or 3/8 inch nipples with the O-rings into the lids so that the filter set can be placed between the cold water supply line. Pay attention to the flow direction (IN/OUT).
Note: The 3/8 inch hose barbs are intended for use with flexible hoses (with a hose clamp if necessary), as commonly found in recreational vehicles. For connection to a fixed water line, the 3/8 inch nipples are used in combination with 3/8 inch flexible braided hoses.
2. Mounting the filter system
Mount the filter system using the supplied wall bracket. Allow approximately 10 cm of space below the system so that the bowls and filter elements can be easily removed.
3. Marking the date of first use
Write the date of first use on the supplied date sticker and place it visibly on the filter housing.
4. Venting the system
Before first use, the filter system must be vented. Press and hold the black vent buttons on top of the filter lids (while the system is pressurized and the tap is closed) until all air has escaped.
Tip: Hold a cloth near the vent valves to catch any water that may be released.
First use
It is recommended not to use the first 5 liters of filtered water for consumption. After this, the filter system is ready to provide clean and safe drinking water.
Replace Filter Element


1. Relieve System Pressure
Turn off the water supply and turn on the tap to release pressure from the system.
2. Disassemble the Filter
Place a bowl or towel under the filter. Turn the filter housing counterclockwise to open.
3. Replacing the Filter Element
Remove the old filter element (3.1) and place the new filter element (3.2) into the filter bowl.
4. Reassemble the Filter
Tighten the bowl; do not overtighten – hand-tight is sufficient. Ensure the rubber sealing ring is clean and properly positioned.
5. Deflate the System
Press and hold the (black) vent button on top of the filter lid (while the system is pressurized and the tap is closed) until all air has escaped.
Tip: Hold a cloth near the vent valve to catch any water that may be released.
Storage during prolonged absence
Allow the filters to air-dry and store them in a clean, dry place.
Note: Although the filter housings themselves are frost-resistant, it is important to drain the filter and the water system if they are not being used during the winter months, in order to prevent freezing.
Shelf life and service life
When unused, the filter has a virtually unlimited shelf life, provided it is stored in a cool, dry, and dark place.
The recommended service life is 6 months. The actual lifespan depends on the water quality and the level of contamination of the water being treated. Replace the filter elements at least once a year.
During extended periods of non-use, the filter elements can be removed and allowed to dry completely. After being stored in dry, hygienic conditions, the filter can be reused later. Periods during which the filter elements are stored completely dry do not need to be counted towards the actual service life.
Dimensions
(Click on the image below for a larger version)
Disclaimer
This water filter is designed to reduce a wide range of contaminants to levels generally considered safe for daily use. However, it may not be effective against water heavily contaminated with industrial chemicals or hazardous substances. Although water quality is significantly improved, the filter is not intended for specialized or medical use. Individuals with weakened immune systems or specific health concerns are advised to take extra precautions and consult a professional if necessary.