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Acqua Brevetti MiniDUE ½″ Liquid Water Softener - 17 LPM


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The Acqua Brevetti MiniDUE ½″ Liquid Water Softener is a compact volumetric proportional mechanical dosing pump water softening system designed to fit onto ½″' pipes. The system simply fits onto the rising main copper pipe or any pipe supplying a particular device, such as a boiler. The MineDUE is a great alternative for a water softener due to it being very easy to install and to maintenance and replacing the pouches is very simple too. The system takes up very little space compared to a traditional softener as well.


✓ Prevents limescale build up and corrosion for whole house (hot and cold) or individual appliances

✓ Brilliant eco-friendly Non-Salt alternative to a traditional water softener

✓ No electricity, no waste and easy maintenance

✓ Ideal for confined spaces

✓ WRAS Approved


The Acqua Brevetti MiniDUE ½″ Liquid Water Softener is a compact volumetric proportional mechanical dosing pump water softening system designed to fit onto ½″' (15mm copper or speedfit) pipes. The system simply fits onto the rising main pipe or any pipe supplying a particular device, such as a boiler.

The MiniDUE adds the precise dosage of AcquaSIL 2/15® Liquid to water. AcquaSIL is a 100% safe, food grade polyphosphate used specifically for the treatment of drinking water.  MiniDUE provides limescale prevention and corrosion prevention within the systems such as boilers, heaters, showers, taps, radiators, coffee machines, all plumbing fixtures and so on.

The MineDUE is a great alternative to a water softener due to it being very easy to install and to maintain as replacing the pouches is very simple and quick. The system takes up very little space compared to a traditional softener as well and the cost of maintenance is lower too.

The MiniDue is an eco-friendly alternative to a water softener as no water is wasted; as softeners uses thousands of litres every month to regenerate the resin - there is no need with this innovative and space saving device. It also uses no electricity and overall the system is a great innovation in the water treatment industry.


Download Acqua Brevetti MiniDUE ½″ Liquid Water Softener - 17 LPM Manual


How Does MiniDUE Work


MiniDUE is a self-priming mechanical volumetric pump that is operated by a turbine which in turn transmits the movement to a special cam shaft that enables the liquid to rise from the refil pouch to the injection valve, where it is injected a small amount of AcquaSIL 2/15®  Liquid into the water as it passes through the pipe. The liquid comes in pouches (sold in 250gram and 1000gram variants) that clip onto the system, which makes changing them very easy. The system comes with a remote installation kit, a 250gram refill, an installation manual and a warranty form.

MiniDUE is available as standard with ½″ Male connections.and can be installed on a horizontal or vertical pipe by simply adjusting the orientation of the connection block. For whole house protection you can use our larger refill pouch of 1000gram which provides up to 44 cubic meters of dosage (44,000 litres) from a single pouch.

Because MiniDUE uses a liquid solution we guarantee a sludge free operation. MiniDUE is fully compliant with European Approval EU 98/83/CE for use with drinking water. and is approved by the Italian water quality approval board under DM, no. 174, 06.04.04. The Use of AcquaSIL and specifically the use of Polyphosphates is covered by the standard UNI 8065, part 5.4.1 which indicates the use of polyphosphates for the treatment of scale deposits and corrosion.




Totally mechanically operated, no power required.
Absolute and real precise proportional dosage of liquid polyphosphate AcquaSil 2/15®.
Miniaturized in minimal size dosing station suitable for household applications.
Remote installation availability. The flexible bag can be installed separately from the dosing pump, when
spaces do not allow the jointly installation.
Versatile. The pump can be oriented in all directions, just turning it; no need to reverse or disassembly its
own parts.
No need to put in by pass or drain the system during refill operations; just replace the flexible bag.
Non return valve integrated resistant to water counter pressure.
For the first time suitable also for protection of recessed boilers!, where spaces are very restricted.

About refill


Under-vacuum suction
Flexible disposable refill bags
Can be jointly or remotely to the pump be installed
Two different sizes available (250 gr. or 1000 gr, for increasing the autonomy)
Completely isolated from hydraulic circuit


The advantages of the Under-Vacuum suction and disposable refills!


Hygienic advantages. No direct handling form end user.
No periodic tank cleaning operations required.
Effective preservation of polyphosphate quality.
No evaporation of product, avoiding water concentration reduction in the liquid solution.
No atmospheric contamination.




Width (A) - 90mm

Total height (B) - 92mm

Heigth at connection (C) - 58mm

Distance from ground (D) - 300mm

Depth (E) - 82mm


Model PM004
Brand Acqua Brevetti
Daily Deal Yes
In Depth We provide a LIFETIME WARRANTY with this product - the warranty is subject to you the customer purchasing genuine liquid from H2O Life and the installation complying with the technical specifications as detailed in the manual (i.e. flow rate, minimum/maximum incoming pressure).

WRAS Approved. WRAS Approval Number: 1603318 - Approved Product

Connections - ½” Male BSP on inlet & outlet ports (ideal for 15mm pipe)

For the correct operation and performance of the unit, the following conditions must be met:

Minimum flow rate - 0.18 m3/h
Maximum flow rate - 1.0 m3/h (just under 17 litres per minute)

Flow rate (at 0.2 bar) - 0.6 m3/h (600 LPH)

Flow rate (at 0.5 bar) - 1.0 m3/h (1000 LPH)

Min-max water hardness - 5 - 35°f (max 350 ppm CaCO3)

Max. instantaneous heating temperature - 80°C

Max temperature for stored hot water - 60°C

250 gr refill capacity - 10-11 m3 (10,000 to 11,000 litres)

1000 gr refill autonomy - 40-44 m3 (40,000 to 44,000 litres)

Min-max water pressure - 1.5 - 6 bar

Min-max water temperature inside MiniDUE - 5 - 30°C


What is the advantage of MiniDUE?
MiniDUE is a patented device which exclusively uses a liquid 100% food grade polyphosphate designed to prevent limescale and also over time provide a de-scaling action for already encrusted surfaces.Because MiniDUE uses a liquid it 100% guarantees no sludge build up or clogging often found when using granules or powder. MiniDUE is very compact and requires no power supply. MiniDUE uses vacuum packed refill pouches which use a simple twist bayonet style fitting. Our largest refill pouch of 1000gram will provide up to 42 cubic meters of dosage, typically up to 1 years supply in a typical household.

Do I need a separate (non-treated) drinking supply?
No. this is only required when a water softener is installed which use salts. Or if other dosing systems are installed which cannot guarantee the dosage amount. MiniDUE provides 100% accurate, metered dosage of food grade polyphosphate liquid solution with is 100% safe for drinkable water

What is AcquaSIL?
AcquaSIL is our liquid polyphosphate anti limescale solution used exclusively in the MiniDUE to prevent limescale and corrosion. It is a 100% food grade liquid solution which allows a guaranteed metered dosage and delivers 100% drinkable water whilst stopping limescale build up. Polyphosphates have for years been one of the only trusted ways in which to treat and prevent limescale build up. In fact Polyphosphate is often found in many foods currently available.

What does AcquaSIL do to the water?
AcquaSIL , when released in an accurate measured dosage into the water effectively coats the mineral ions preventing them from forming on surfaces and allowing them to travel through the system. The systems has no effect of the soap effect of the water, like a salt based system does.

Will MiniDUE protect my boiler?
MiniDUE has been designed to be installed on the mains water feed directly into the boiler to provide 100% protection against limescale build up. MiniDUE also provides corrosion protection within the central heating boiler. As MiniDUE exclusively uses a liquid to provide protection, MiniDUE guarantees that no sludge or residue build up will occur thus ensuring your boiler operates at maximum efficiency.

Is AcquaSIL safe?
Yes. AcquaSIL and polyphosphates are classed as a ‘food grade’ additive which conform to European Standards EN1208 and World Health Organisation standards as a safe additive to drinking water.

Does it smell?
No. AcquaSIL is odourless.

Can I taste AcquaSIL?
No. AcquaSIL is a tasteless liquid.

Will it discolour my clothes?
No. AcquaSIL will not affect fabrics or finished surfaces.

When does the easy fit refill pouch need to be replaced?
When the vacuum packed easy fit refill pouch is empty, simply untwist the old used pouch and twist on a new pouch. There is no need to isolate the water supply and because we use disposable refill pouches there is no need to come into contact with any of the AcquaSIL liquid. Our refill pouches are designed to be replaced easily by you with minimum fuss. MiniDUE uses a patented system for 100% accurate and metered dose of the AcquaSIL liquid. The amount of AcquaSIL that enters the system is 100% guaranteed regardless of the volume or flow rate of the water. MiniDUE guarantees no over dose or under dose of the liquid due to the proportionate method of dosage. It’s easier than changing a light bulb. Each starter pack comes complete a 250gram refill pouch which typically will treat up to 11000 litres of water. We also offer a 1000gram pouch which will typically treat up to 44000 litres of water.

Does MiniDUE need maintenance?
Depending on the refill pouch used, a 1000gr refill pouch will typically last 12 months in an average household. MiniDUE requires no other maintenance.

Does heat affect the MiniDUE?
No. MiniDUE and the AcquaSIL is un affected by higher ambient temperature and has in fact been designed so the unit can if required be installed within the boiler casing where space permits.

Do I need a professional plumber to install MiniDUE?
Fitting the MiniDUE does require a basic competency level of plumbing skills and equipment. However, we would always recommend using a professional plumber.

Where can I buy MiniDUE and the easy fit vacuum packed refill pouches?
MiniDUE is available through all good independent plumbers merchants or direct from ourselves.


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For or full delivery information including international shipping, please click here to view full delivery information.

Warranties and Guarantees

Any warranty or guarantee applied to goods sold at the behest of a third party shall be the responsibility of the said third party absolutely and any correspondence entered into must initially be carried out between the purchaser and the Company.

Goods sold as manufactured by or being the service of the Company shall be subject to such warranties and guarantees as may be stated by the Company and correspondence should be entered into with the Company in writing exclusively.

No warranty or guarantee shall be applied or implied other than at the time of purchase.

In any event all goods or services purchased here in shall be subject to an unconditional warranty for a period of 30 days, said warranty not to exceed the value of the purchase.


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