The IV model is equipped with a semi-automatic IV valve in thermoplastic material, i.e. Grivory, and with quick coupling water connections, allowing easy and speedy installation. Resin regeneration occurs by manually rotating the valve’s handle in the four positions:
1- Running;
2- Pressure unloading and salt-loading;
3- Resin rinsing;
4- Backwash.
Water usage by the machines connected with the water softener is possible also during regeneration. Moreover a mixer inside the valve directs part of the hard water towards the outlet, hard water is thence mixed with softened water to deliver water with a degree of hardness. To obtain totally softened water, users only need to close the mixer completely.
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