Designed for households of 4 to 6 people, the BWT PERMO VOLUMECO is the ideal softener for small spaces. It is also suitable for collective or professional needs (catering, sensitive equipment). Delivered complete with meter, hardness control valve, non-return valve, connection kit and BWT CRISTAL 4" prefilter, it guarantees efficient, reliable soft water. Compact and powerful, it offers a simple solution for protecting your installations from limescale.