Bwt Bestmax M Premium Barista Set AQA MPC500 Since it is delivered without High salt retention rate Since it is delivered without a filter head The BWT bestmax S is a universal filtration system specifically designed for the hospitality industry to optimize water quality for hot and cold beverages as well as culinary applications This set is ideal for baristas and coffee lovers who value the highest water quality and the protection of their equipment BWT Pressure ReducerThe pressure regulator controls the water pressure to protect the coffee machine from potential damage caused by excessive pressure and to ensure a consistent water flow