This European Standard specifies : - the dimensional, leaktightness, mechanical and hydraulic performance, mechanical endurance and acoustic characteristics with which thermostatic mixers shall comply ; - the procedures for testing these characteristics. It is applicable : - to thermostatic mixing valves intended for use on sanitary appliances in washrooms (toilets, bathrooms etc.) and in kitchens ; - to PN 10 thermostatic mixing valves used under the pressure and temperature conditions given in table 1.