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Doulton DUO Limescale Removal Under-Sink Water Filter System (Full System with Chrome Tap, Fittings, Ultracarb And Cleansoft Filters)

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Doulton DUO Under Sink Filter Kit with Ultracarb & Cleansoft Filters. Includes Tap & Fittings

The Doulton DUO Drinking Water Filter from Doulton brings you bottled quality water on tap in your own home.

DUO fits neatly under the sink in your kitchen, supplying filtered water through the drinking water tap included in the kit.

Doulton water filters have been manufactured in the UK for more than 185 years. It is a well-tested and trusted brand.

Doulton Duo module with Cleansoft & Ultracarb ceramic filters, tap, tubing and fittings.


  • 1 x Doulton DUO Housing
  • 1 x Doulton Ultracarb Ceramic Filter
  • 1 x Doulton Cleansoft Ceramic Filter
  • 1 x Chrome tap
  • 1 x 3 metres of DMFit Tubing
  • 1 x Finerfilters auto shut off valve (ASV3)
  • 1 x 7 & 1/16" x 1/4" tap adapter

Tap Pressure:

MIN - 0.5 Bar
MAX - 8.5 Bar

Stage 1 - CleanSoft
Protect against the damaging effects of hard water by using the Doulton® CleanSoft limescale reduction cartridge in the first chamber of the DUO drinking water filter. Reduces limescale build-up in kettles. Reduces temporary hardness in drinking water. Prevents an unpleasant film from forming on the surface of tea and coffee. CleanSoft cartridge life - 3 months typical usage before cartridge replacement is required

Stage 2 - Ultracarb
Multistage filtration in one filter cartridge:
Stage I - Outer Shell-Micro Filtration
Stage II - Anti-Bacterial formula within the ceramic matrix inhibits microbial growth
Stage III - Activated carbon in the Ultracarb candle takes out chlorine and organics improving taste and odour
Stage IV - Ultracarb also contains heavy metal removal media, which takes out toxic lead Ultracarb filter candle life - 6 months* before replacement of the ceramic filter is required. *Cartridge and filter candle life may vary depending on your local water conditions.

Faucet / Tap Specifications
Connection: 7/16" Thread (We supply a 7/16" UNS x 1/4" Push Fit Fitting)

Tap Stem: The taps have a 70mm stem and although designed to fit onto your sink, should fit through most modern-day worktop and kitchen sink tops.

Bore Size: The hole you will be required to drill through your work surface should be between 11mm - 16mm

Minimum Operating Pressure: 7.5 psi / 0.5 Bar

Maximum Operating Pressure: 120 psi / 8.5 Bar

More Information
Product Name Doulton Duo Undersink Filter Kit with Ultracarb and Cleansoft Filters
Brand/Manufacturer Doulton
Contaminants Filtered Chlorine, Cysts (Giardia & Cryptosporidium), Dissolved Organic Matter (DOM), Heavy Metals, Lead, Limescale, Microplastics, Pathogenic Bacteria, Pesticides & Herbicides, Polyfluoroalkyls (PFAs), Sediment, Volatile Organic Compounds (VOCs)
Connection Type 3/8" Push Fit
Min. Working Temp. 4°C / 39.2°F
Max. Working Temp. 38°C / 100.4°F
Max. Working Pressure 8.62 Bar / 125 Psi / 862 kPa
Rated Capacity 1135 Litres / 300 US Gallons
Weight (kg) 2.730000
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