The Miele 5750095 Dishwasher Non-Return Valve helps maintain proper water flow by preventing used water from flowing back into the dishwasher system. This replacement valve is an important drainage component designed to allow water to move in one direction during the wash and drain cycles. It works by opening to let wastewater exit the appliance and closing to block backflow, helping ... https://www.hnkparts.com/miele-5750095-dishwasher-non-return-valve