Protects home appliances against scaling and increases detergents efficiency up to 30%. This filter should be installed between water supply valve and washing machine using connection adapter 3/4 "male x 3/4" FIP. Stone deposits accumulated inside elements of household appliances (drums, heaters, etc.), cause the destruction of equipment and greater use of energy. FHPRA filter is equipped with poly-phosphate crystals which convert phosphate into calcium phosphate thus preventing scaling.