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ALFILTRA DUPLEX-PRO-PLUS 1.5" Water Softener

pro-enthaertungsanlagen_1 pro-enthaertungsanlagen_1
filtrasoft-duplex-pro-r_ckansicht_1_1 filtrasoft-duplex-pro-r_ckansicht_1_1
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Alfiltra Duplex Pro Plus 200 Enthärtungsanlage Alfiltra Duplex Pro Plus 200 Enthärtungsanlage
Alfiltra Duplex Pro Plus 300 Enthärtungsanlage Alfiltra Duplex Pro Plus 300 Enthärtungsanlage
€6,490.00
incl. VAT excl. shipping costs
  Available - Delivery between 6/15/26 and 6/18/26
  • ✓Two-column water softener for professional use in large residential complexes or in industry with 2 CLACK control valves and 1.5" connection , removes limescale (calcium and magnesium) detectable.

Performance class (capacity)

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
400
800
1000
1200
1500

Often bought together

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-PLUS 1.5" Water Softener

  • ✓Two-column water softener for professional use in large residential complexes or in industry with 2 CLACK control valves and 1.5" connection , removes limescale (calcium and magnesium) detectable.

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

Fully automatic, twin-column water softener with separate salt tank. Features two electronic, water meter-controlled Clack WS1 Cl control valves and a three-way motorized valve. Ideal for apartment buildings, hotels, or industrial applications.

The highlights:

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

Technical details:

  • Power supply: 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 Clack WS1.25 control valves and 3-way motor valve
  • PVC piping
  • Support gravel for optimal resin yield
  • Salt container with safety float
  • without connection parts (see accessories) and without drain hose.

Please note that the image may differ from the actual appearance of the system. Depending on the capacity, larger pressure tanks may be used. Please refer to the technical data sheet for exact dimensions.

Clack LogoEco Inject System

Note: This system was renamed from FILTRASOFT Duplex-Pro-Plus to ALFILTRA Duplex-Pro-Plus in May 2020. The system itself remains unchanged.

Installation and maintenance service for water softening systems

Alfiltra assembly team

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

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

Technical specifications

Downloads

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

Often bought together

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.

Flexschlauch 1,5'' (100 cm lang)
Flexschlauch 1,5'' (100 cm lang)
€119.00
€119.00
incl. VAT excl. shipping costs
  Available

Flexschlauch 1,5'' (150 cm lang)
Flexschlauch 1,5'' (150 cm lang)
€142.00
€142.00
incl. VAT excl. shipping costs
  Available

Connection fitting 1.5"

We recommend integrating your system into the pipe network with this connection fitting. The fitting has a bypass function, so if a malfunction occurs, the water supply does not have to be interrupted.

Connection fitting 1.5'' with intersection
Connection fitting 1.5'' with intersection
€299.00
€299.00
incl. VAT excl. shipping costs
  Available

Installation fee for Duplex Pro and Pro-Plus systems

Installation fee for duplex systems up to Duplex 80
Installation fee for duplex systems up to Duplex 80
€690.00
as of â‚¬690.00
incl. VAT excl. shipping costs
  Available
configure

Installation fee for duplex systems up to duplex 180
Installation fee for duplex systems up to duplex 180
€750.00
as of â‚¬750.00
incl. VAT excl. shipping costs
  Available
configure

Installation fee for duplex systems up to Duplex 300
Installation fee for duplex systems up to Duplex 300
€900.00
as of â‚¬900.00
incl. VAT excl. shipping costs
  Available
configure

Installation fee for duplex systems up to Duplex 500
Installation fee for duplex systems up to Duplex 500
€1,400.00
as of â‚¬1,400.00
incl. VAT excl. shipping costs
  Available
configure

Installation fee for duplex systems up to 1000
Installation fee for duplex systems up to 1000
€1,990.00
as of â‚¬1,990.00
incl. VAT excl. shipping costs
  Available
configure

Installation fee for duplex systems up to Duplex 2000
Installation fee for duplex systems up to Duplex 2000
€2,600.00
as of â‚¬2,600.00
incl. VAT excl. shipping costs
  Available
configure

Connection sets in 1.5"

This system is delivered without connecting parts. We recommend that you install the system into the pipe network using one of these connection sets.

Connection set Duplex-Pro-Plus 1.5'' with intersection (100 cm hoses)
Connection set Duplex-Pro-Plus 1.5'' with intersection (100 cm hoses)
€549.00
€549.00
incl. VAT excl. shipping costs
  Available

Connection set Duplex-Pro-Plus 1.5'' with intersection (150 cm hoses)
Connection set Duplex-Pro-Plus 1.5'' with intersection (150 cm hoses)
€595.00
€595.00
incl. VAT excl. shipping costs
  Available

Connection set 1.5'' with intersection (Duplex-Pro-Plus) 200 cm
Connection set 1.5'' with intersection (Duplex-Pro-Plus) 200 cm
€661.00
€661.00
incl. VAT excl. shipping costs
  Available

Resin cleaning and disinfection for ion exchangers

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 softeners 1000 ml
RESIN CLEAN resin cleaner for water softeners 1000 ml
€19.90
€19.90 (€19.90 / l)
incl. VAT excl. shipping costs
  Available

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

Salt for ion exchangers (large quantities)

You can use our online calculator to calculate your salt consumption .

30 bags of 25 kg each of special salt for ion exchangers (1 pallet)
30 bags of 25 kg each of special salt for ion exchangers (1 pallet)
€379.00
€379.00 (€0.51 / kg)
incl. VAT excl. shipping costs
  Available