Concealed shower valve brass cartridge 2 u0026 3 way diverter valve maintenance and replacement Olive 3 way square concealed thermostatic mixer valve hand held bath shower kit cloakroom chrome luxury bathroom modern basin sink mono square mixer tap & waste. Operating range 20 50 deg C with 38 deg C safety button. BATHROOM 3 DIAL 3 WAY CONCEALED ROUND THERMOSTATIC SHOWER MIXER VALVE CHROME.