Described herein is an apparatus for carbonating a liquid in a bottle, said apparatus comprising a main body and a head, wherein said head is configured to hold a bottle filled with a liquid and wherein said head is movably attached to said main body such that said head with said bottle can be moved between a first position at said main body and a second position away from said main body through a threshold position between said first and said second position or at said second position, characterized in that said apparatus further comprises a switch and a valve operatively connected to said switch, wherein arranging said head with said bottle at said first position or between said first position and said threshold position causes said switch to close said valve or to keep said valve closed and wherein arranging said head with said bottle at said second position or between said second position and said threshold position causes said switch to open said valve or to keep said valve open.