Dornbracht IMO single-lever shower mixer for wall mounted chrome 33300670 00 - Backflow Preventer in the shower outlet - Cartridge with ceramic discs - Shower Outlet 3/8 - Actual Size 150 mm - Integrated Cam Connection (Geruschgedmpft) intrinsically safe against backflow. For shower hoses 1/2 Please order the 12 202 979/FF.Dornbracht