RWS 100 Tandem Water Softening System
A professional water softening system with a tandem valve for businesses and high-flow applications.
Technical specifications
View all- Connection size
- 1 1/2”
- Max. flow rate
- 4 m³/h
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Free installation
2+8 Year Warranty
24/7 Technical Support
Uninterrupted water comfort with fully automatic tandem softening
With a mineral resin capacity of 100 L x 2 and a maximum service flow rate of 4 m³/h, the Rainwater RWS 100 Tandem Fully Automatic Softening System controls water hardness in areas with high water consumption. With its tandem valve design and fully automatic operation, it aims to deliver sustainable quality in plumbing, equipment and process water.
Fully automatic tandem design
The tandem valve architecture helps keep system performance continuous and balanced in high-consumption areas.
Generous resin volume
The 100 L x 2 mineral resin configuration offers high capacity for capturing hard water minerals.
High service flow rate
With a maximum service flow rate of 4 m³/h, it provides an effective solution for businesses, facilities and high-use areas.
Protection against limescale
Helps reduce limescale-related performance loss in plumbing lines, machines and water-using equipment.
Highlights
Smart monitoring
System status and salt level are monitored, and maintenance notifications are sent.
Softening + filtration
A complete modular system can be set up with a pre-filter, carbon and UV.
RWS 100 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 plumbing and in every appliance that uses water; over time it narrows pipes and reduces the efficiency of boilers and machines. The Rainwater RWS 100 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 100 for?
For businesses and high-flow applications. It offers 2 tanks (14” × 65”), 2 × 100 L of mineral resin and a maximum service flow rate of 4 m³ per hour.
How does it work?
As water passes through the resin-filled tank, calcium and magnesium ions are retained by the resin, and the softened water flows on into the plumbing. When the resin is saturated, the system automatically recharges itself with the brine from the salt tank (regeneration), then backwashes and rinses. In the two-tank tandem design, one tank works while the other regenerates, so the supply of soft water is never interrupted.
What does it offer in daily use?
- Reduced limescale formation in plumbing and equipment
- Helps protect boilers, water heaters, washing machines and dishwashers
- Automatic regeneration; minimal user intervention
- Tandem valve, fully automatic, 1 1/2” connection
Installation and maintenance
The system is installed at the water inlet of the building or facility, with the right capacity selected for the need. 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.)
- 4 m³/h
- Number of tanks
- 2
- Tank size
- 14” × 65”
- Mineral resin
- 100 L x 2
Purification
- Valve type
- Tandem
- Bed velocity
- 40 m³ / m³ resin / hour
Power and size
- Connection size
- 1 1/2”
- Operating pressure
- 2 – 6 bar
General
- Model
- RWS 100
- Order code
- 9718
- 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 100 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 100?
It offers 2 × 100 L of mineral resin and a maximum service flow rate of 4 m³ per hour.
Does water softening make the water salty?
No. Salt is used only to recharge the resin and is discharged to the drain during regeneration; the water does not become salty.