Hansgrohe Vivenis 1x Single-Lever Bathtub Mixer with Backflow Preventer and Aerator: prevents the ingress of non-potable water into the drinking water supply during negative pressure. Quick filling of the tub: with a flow rate of up to 25 l/min. Maximum flow rate for the shower head is 24.3 l/min (at 3 bar). Temperature limitation protects against water that is too hot. High-quality single-lever mixer for controlling two functions: tub fill and shower head. Advantage of concealed installation: more space at the edge of the tub. Basic installation set required (to be ordered separately). One handle is enough: switching from tub fill to shower head is easy with the smooth diverter, equipped with Hansgrohe's high-quality, smooth ceramic mixing system. Built-in silencer reduces the water flow noise – for extra quiet operation. Delivery includes: single-lever bathtub mixer, functional block, mounting materials, installation instructions.