35MM Single Lever Ceramic Cartridge for Blanco Kerox NKJ 35 F206502 F0304 NKJ35A 123817 p29119 Two exclusive features to provide economies of waterconsumption overall, and of hot water use specifically: Saves energy by turning on in middle position oflever handle, delivering cold water - adds hot water only as lever is rotated. Saves water because user must override“resistance bump” to obtain high flow - acts as deterrent to unconsciously turning handle onto full flow position regardless of water requirement. Economical flow rate is maximum 9 l/min / 2.4 gpm at 3 bar / 45 psi.