Dionela FDN2 under sink water filter

Two-stage filtration plus nitrate removal. Cleans impurities and makes great-tasting water.

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Product description

Dionela FDN2 under sink water filter

Dionela water filters are a quick and cost-effective solution for improving the quality of water in your household for drinking, preparing beverages, and cooking. This under-counter filter fits neatly out of site under the sink and attaches to a filtered-water faucet. These are purchased separately and are available in a simple form and more elegant form.

The filtration rate of 1.5 liters per minute offers a ready supply of filtered water for immediate use.

Dionela FDN2 under counter filter

FDN2 Filtration for high nitrates

The FDN2 has all the same capabilities as the FAM1 filter, plus it can remove higher levels of nitrates. It uses a two-stage system to effectively purify your water.  The first stage is a textile-based system which removes physical impurities including dirt, sand, rust, and metal pieces from pipes. The second stage uses bacteriostatically treated granular activated carbon to remove dissolved substances including chlorine, radon, heavy metals, organic substances, detergents, and pesticides. It also improves the taste, clarity, and color of water.

The FDN2 filter is suitable for water with nitrate levels over 50mg/L. For lower nitrate levels, use the Dionela FAM1 filter. If you also want to reduce water hardness, use the Dionela FTK3.

Dionela under sink schematic

Simple hookup

To hook up the Dionela under sink filter, a three-way valve is screwed onto the cold water line. A tube runs to the filtered water tap (to turn on and off the water), a second tube to the filter input, and a third tube from the filter output to the tap for pouring.

Dionela filter cartridge

Long-lasting filter

The Dionela can filter up to 38,000 liters and can last up to two years. To save money, the filter can be sent in for replacement. The internal textile and carbon filters are removed and replaced for a fraction of the cost of a new filter.


  • FDN2 water filter cartiridge
  • Stand for under sink mounting
  • Input for 1/4" tube
  • Outlet for 1/4" tube
  • All necessary tubing
  • NOTE: Valve adaptor to connect to cold-water line not included


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