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ALFILTRA DUPLEX-PRO 1.25" water softener

 (2)

€2,649.00
incl. VAT excl. shipping costs
Available - Delivery between 5/26/25 and 5/27/25

Capacity in m³ x °dH

The capacity depends on your water hardness and water consumption. You can determine the capacity using our capacity calculator or use this rule of thumb:

Water hardness Rule of thumb
Medium-hard water (8–14 °dH) Number of people x 7.5
Hard water (14–21 °dH) Number of people x 10
Very hard water (over 21 °dH) Number of people x 12.5

Example (4 people with water hardness 20): 4 x 10 = 40

Dimensioning the water softening system
180

240

300

400

500

600

700

Advice

Your advantages only with us

  • Excellent expertise for 20 years
  • Highest quality in every component
  • fair price-performance ratio
  • in-house, trained fitters
  • no risk through purchase on account (from 500 €)
  • Free shipping in Germany (from 250 €)
Advice

Contact

You can reach our customer service from Monday to Thursday from 9 a.m. to 5 p.m. and Friday from 9 a.m. to 3 p.m.

DUPLEX-PRO 1.25" water softener

Two-column water softening system for professional use in large residential complexes or in industry with 2 CLACK control valves and 1.25" connection , removes limescale (calcium and magnesium) verifiably

Duplex Pro water softener with CLACK control valve and 1.25" water connection

Fully automatic, two-column water softening system with separate salt container, ideal for large water quantities and large requirements. The two electronic, water meter-controlled Clack WS1 Cl control valves regulate the system completely automatically.

The highlights:

  • 1.25" water connection
  • Safety float valve to protect against overflow of the salt container
  • Glass fiber reinforced quality pressure tanks up to 16 bar
  • Eco-Inject system for optimal capacity utilization
  • High performance ion exchange resin, max. capacity per column please select above
  • Optimal utilization of plant capacity without interruption of regeneration

Technical details:

  • Power connection: 230 V, 50 Hz, 15 W
  • Water connection: 1.25"
  • operating pressure 2.2 - 8 bar
  • operating temperature 5-40 °C

Scope of delivery complete 2-column water softening system consisting of:

  • 2 pressure tanks with high-performance ion exchange resin for self-filling
  • 2 control valves Clack WS1.25 and 3-way motor valve
  • PVC piping
  • supporting gravel for optimal resin yield
  • salt container with safety float
  • without connecting parts (see accessories) and without waste water hose.

Please note that the illustration may differ from the actual appearance of the system. Depending on the capacity, larger pressure tanks are also installed. Please refer to the technical data sheet for the exact dimensions.

Note: This system was renamed from FILTRASOFT Duplex-Pro to ALFILTRA Duplex-Pro in May 2020. Nothing has changed in the system itself.

Installation and maintenance service for water softening systems

Alfiltra assembly team

If you wish, we can install your water softener in your apartment building at a fixed price within Germany. Thanks to our 4 locations, we can offer the installation service including travel at a reasonable fixed price.

This is how it works:

  • You order the desired system including installation service in our online shop, by phone or by email
  • To eliminate any possible ambiguities, please send us a few photos of the installation location in advance
  • We will contact you by phone to arrange an appointment
  • Our technician will professionally install the system at your premises or in your property

The Alfiltra quality promise

Highest quality

  • Our systems are Made in Germany from our own production
  • Carefully selected materials for durability and reliability
  • Up to 7 years warranty on selected systems with annual maintenance

Maximum security

  • Pay conveniently and securely by invoice, without financial risk
  • Positive customer reviews confirm the high level of satisfaction
  • Fast and uncomplicated help if something is not to your satisfaction

Competent team

  • Available throughout Germany for fast and competent service
  • 4 locations guarantee personal support and fast response times
  • If you have any questions or concerns, our support team is always available

Installation and maintenance service for water softening systems

Alfiltra assembly team

If you wish, we can install your water softener at a fixed price within Germany. Thanks to our 4 locations, we can offer the installation service including travel at a reasonable fixed price.

This is how it works:

  • You order the desired system including installation service in our online shop, by phone or by email
  • To eliminate any possible ambiguities, please send us a few photos of the installation location in advance
  • We will contact you by phone to arrange an appointment
  • Our technician will professionally install the system for you

 5.0 from 5 Stars (2 Reviews)

5 Stars (2)
4 Stars (0)
3 Stars (0)
2 Stars (0)
1 Star (0)

Customer Photos

Duplex-Pro-500-water-softening-system-commercial-operation

Latest Reviews

5.00
Dirk H.
May 14, 2023
Variant: Duplex-Pro 180 WS1.25-TWIN softener
good installation, good function and friendly, competent staff...
good installation, good function and friendly competent staff
5.00
Andreas Z.
Jul 7, 2017
Variant: Duplex-Pro 300 WS1.25-TWIN softener
very good
show all Reviews

This water treatment system works with the ion exchange process. This means that salt is required to operate. How much salt the system needs depends on the water consumption and water hardness. You can calculate your salt consumption using our online calculator.
Salt tablets for water softeners and ion exchangers 5x 25 kg bags
Salt tablets for water softeners and ion exchangers 5x 25 kg bags
€74.00 (€0.59 / kg)
View product
incl. VAT excl. shipping costs
Available

This special solution of preservative and demineralized water ensures that the resin of your ion exchanger is refreshed. Use once a year or after the system has been shut down for a long time.
RESIN CLEAN resin cleaner for water softening systems 1000 ml
RESIN CLEAN resin cleaner for water softening systems 1000 ml
€19.90 (€19.90 / l)
View product
incl. VAT excl. shipping costs
Available

RESIN CLEAN resin cleaner for water softening systems 5000ml
RESIN CLEAN resin cleaner for water softening systems 5000ml
€89.00 (€17.80 / l)
View product
incl. VAT excl. shipping costs
Available

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Do you have questions?

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Product: DUPLEX-PRO 1.25" water softener

0 upvotes 1 answers
Answer:
0
A dosing system is not absolutely necessary and is also not mandatory.
The connection fitting is not included automatically.
We recommend that you order the connection set. It contains everything you need, see: https://www.alfiltra.de/anschluss-set-1-25-mit-verschneidung-duplex-pro-100-cm You are welcome to request a quote so that we can put together the right system with accessories and assembly for you.

0 upvotes 1 answers
Answer:
0

The duration of the regeneration of a column in the DUPLEX-PRO 1.25" softening system varies depending on the specific model and the set parameters of the system. In general, however, one can assume the following:

  • Average regeneration time: Regeneration of a column in a water softening system such as the DUPLEX-PRO 1.25" typically takes between 60 to 120 minutes (depending on capacity).

  • Different phases of regeneration: The regeneration process includes several phases - backwashing the resin, loading with saline, slow rinsing (refilling) and fast rinsing. The duration of each phase can vary depending on the system settings and the water hardness.

  • Automatic Process: Regeneration is typically carried out automatically by the system controller based on water consumption or a pre-programmed schedule.

    • To determine the exact duration of regeneration for your specific DUPLEX-PRO 1.25" system, please download the data sheet.
    More questions and answers