This document specifies: a) field of application; b) requirements for automatic diverters; c) dimensional and the physico-chemical properties and the properties of general hydraulic, mechanical and acoustic design of automatic diverters; d) test method and requirements for verifying these properties. For sanitary tapware (see Clause 2) with integrated devices, the automatic diverter is only considered to be a backflow protection device if it has passed the requirements of this document and additionally those of the applicable product standard for the draw off tap or mixing valve; e) marking and presentation; f) acoustics. This document specifies the characteristics of automatic diverters suitable for use in drinking water systems at pressures up to 1 MPa (10 bar) and temperatures up to 65 °C and for 1 h at 90 °C. They are intended only for installation with no downstream closing device. This document is applicable to the product type indicated as follows: i) integrated in spout (outlet); ii) integrated in the mixing body; iii) non-integrated (part of a set) above the maximum water level. This document is not applicable to the product type non-integrated below the maximum water level.