Used to control the flow of water into a basin or wash trough. Pillar taps control the flow of hot and cold water independantly. Basin mixers mix hot and cold water to give the desired flow rate and water temperature from a single spout. Basin mixers come in either single lever or dual control versions where either one or two controls are used to vary the flow rate and temperature. Self-closing taps which automatically turn off after a predetermined time and sensor taps which automatically turn on and off are also available.