Siemens Bosch Ceramic Valve EQ.8 12015638

120051132, 12015638, Siemens Bosch ceramic valve EQ.8 distributes water flow for coffee, hot water, and steam for milk frothing. If coffee or water no longer goes where it should but instead drains, for example, into the drip tray, this is most often a sign of improper ceramic valve operation.