Maintenance-free descaling system Installation and operation are very simple. After commissioning, the intelligent valve with integrated microprocessor and water meter ensures smooth operation and automatic regulation. The LCD provides information on the current status and allows the settings to be adjusted easily at any time, based on the ion exchange principle. The resin core is responsible for this. With a capacity of 5 litres of resin, this model provides soft water for households of 1-4 people.