RWS 80 Tandem Water Softening System
A twin-tank, whole-system treatment solution focused on continuous performance for high water consumption settings.
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Free installation
2+8 Year Warranty
24/7 Technical Support
High-capacity tandem water softening system
The Rainwater RWS 80 Tandem is a powerful water softening system designed for homes, offices and high-consumption businesses. With 2 FRP tanks, 160 L of mineral resin and a maximum service flow rate of 3.2 m³/h, it reduces limescale caused by hard water and helps plumbing and equipment work more efficiently.
Tandem tank performance
The twin-tank design provides more balanced, continuity-focused water softening performance in high-consumption use cases.
High resin capacity
160 L of mineral resin helps capture hardness minerals effectively and contributes to more stable water quality.
Convenient automatic operation
With the RWS 80 control mechanism, the regeneration process is managed by the system, reducing the need for user intervention.
Protection for plumbing and appliances
By reducing limescale build-up, it helps protect equipment such as combi boilers, water heaters, washing machines and dishwashers.
Highlights
Smart monitoring
System status and salt level are monitored, and maintenance notifications are sent.
Softening + filtration
A complete modular system can be built with a pre-filter, carbon and UV.
RWS 80 Tandem Water Softening System
Adding value to your life with certification to international standards
The confidence of flawless quality: freshness and peace of mind for everyday life.
CE certificate
FDA certificate
Water Quality
TÜV Cert ISO 14001
NSF certificate- TÜV Cert ISO 9001
Düzen Norwest
Hacettepe University
Istanbul Technical University
Our systems use PARKER – LIQUIFIT – LEGRIS brand components and comply with the US Food and Drug Administration (FDA) regulations, CFR 21.
Product description
Hard water leaves limescale in the plumbing and in every appliance that uses water; over time it narrows pipes and reduces the efficiency of boilers and machines. The Rainwater RWS 80 is a water softening system that reduces the hardness of the water entering a building or facility using the ion exchange method.
Who is the Rainwater RWS 80 for?
For homes, offices and high-consumption businesses. It offers 2 FRP tanks (13” × 54”), 160 L of mineral resin and a maximum service flow rate of 3.2 m³/h.
How does it work?
As water passes through the resin-filled tank, calcium and magnesium ions are held in the resin and the softened water goes to the plumbing. When the resin is saturated, the system automatically recharges itself with the solution from the brine tank (regeneration), then backwashes and rinses. In the twin-tank tandem design, one tank works while the other is regenerating, so the supply of soft water is never interrupted.
What does it offer in everyday use?
- Less limescale formation in plumbing and equipment
- Helps protect boilers, water heaters, washing machines and dishwashers
- Automatic regeneration; minimal user intervention
- Twin tandem tanks, 100 L brine tank, 2–6 bar operating pressure
Installation and maintenance
The system is installed at the water inlet of the building or facility, with the right capacity selected for your needs. If required, it can be completed modularly with sediment, carbon and UV filters. Contact us for capacity selection, installation and maintenance.
Technical specifications
Capacity
- Service flow rate (max.)
- 3.2 m³/h
- Number of tanks
- 2
- Tank size
- 13” × 54”
- Brine tank volume
- 100 L (1 tank)
- Mineral resin volume
- 160 L
Purification
- Control mechanism
- RWS 80
- Bed velocity
- 40 m³ / m³ resin / hour
- Tank material
- FRP
Power and size
- Inlet / outlet connection size
- 1”
- Operating pressure
- 2 – 6 bar
- Test pressure
- 9 bar
General
- Model
- RWS 80 Softener
- Order code
- 8584
- Distributor
- Rainwater Dış Tic. San. ve Tic. A.Ş.
Other whole-house water purification
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Frequently asked questions
What does the Rainwater RWS 80 do?
It reduces water hardness caused by calcium and magnesium using the ion exchange method, helping to prevent limescale build-up in plumbing and equipment.
What is the capacity of the Rainwater RWS 80?
It offers 160 L of mineral resin and a maximum service flow rate of 3.2 m³/h.
Does water softening make the water salty?
No. Salt is only used to recharge the resin and is discharged to the drain during regeneration; the water does not become salty.