All Twin taps require the provision of hot and cold tap water. The hot tap water does not originate from the AQUALEX device. After tapping a certain amount of sparkling, cold or hot water, it is sufficient to take a short break in order to have the water of your preference available again. After instantly tapping 1 litre of sparkling water from Family devices, a few seconds of patience will suffice to be able to tap another litre. With Professional devices, you can even tap 3 litres of sparkling water in a single tap.
After instantly tapping 0.8 litres of hot water (95C) from the Family devices, you can have full hot water again after a waiting period of a few minutes. It is possible to tap more than 0.8 litres at once, but then the temperature will decrease. With the Professional devices, you can tap 5 litres at once, after which the temperature will also decrease.
By the way, there is no need to worry about annoying hot water accidents: a double safety button guarantees safe use and avoids children from getting burned, for example.