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ALFILTRA DUPLEX-PRO-PLUS 1.5" water softener

€6,490.00

incl. VAT excl. shipping costs
Available - Delivery between 1/26/26 and 1/29/26

Capacity in m³ x °dH Help

The capacity depends on your water hardness and water consumption. You can determine the capacity using our capacity calculator or 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 a water hardness of 20): 4 x 10 = 40

Sizing a water softener

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Advice

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 €)

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.

Description

DUPLEX-PRO-PLUS 1.5" water softener

Two-column water softening system for professional use in large residential complexes or in industry with 2 CLACK control valves and 1.5" connection , removes limescale (calcium and magnesium) verifiably

Duplex Pro Plus water softener with CLACK control valve and 1.5" water connection

Fully automatic, two-column water softening system with separate salt container. With two electronic, water meter-controlled control valves Clack WS1 Cl and three-way motor valve. Ideal for apartment buildings, hotels or industrial applications.

The highlights:

1.5" 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 - 6 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.

Eco Inject System

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

Installation and maintenance service for water softening systems

Upon request, we will install your water softener in your apartment building for a fixed price anywhere in Germany. Thanks to our four locations, we can offer the installation service, including travel, at a competitive fixed price.

Here's how it works:

You can order the desired system including installation service in our online shop, by phone or by email.
To clear up any potential uncertainties, please send us a few photos of the installation location beforehand.
We will contact you by phone to arrange an appointment.
Our technician will professionally install the system at your location or in your building.

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 safety

Pay conveniently and securely by invoice, without financial risk.
Positive customer reviews confirm the high level of satisfaction.
Quick and uncomplicated help should anything not be to your satisfaction

Competent team

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

Installation and maintenance service for water softening systems

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

Technical specifications

Downloads (1)

Technical data Duplex-Pro-Plus softening systems (0.18 MB)

Equipment

Flex hoses 1.5"

We recommend connecting your softening system to the mains using flexible hoses. These ensure that you can position the system freely.