Device for inflating a tire , comprising a. a housing , said housing comprising i. at least one first connection port and ii. at least one second connection port (4, 4', 4"), comprising connecting means to interconnect the device with a pressure tank (8, 8', 8") and iii. the at least one first connection port being fluidically connected to the at least one second connection port (4, 4', 4") by means of a fluid passage and b. the device further comprising a first valve and c. when a pressure tank (8, 8', 8") is connected to the at least one second connection port (4, 4', 4"), i. the first valve in a closed state is suited to prevent air from flowing from inside of the pressure tank (8, 8', 8") out of the at least one first connection port and ii. the first valve in an open state is suited to allow passage of air from inside of the pressure tank (8, 8', 8") through the fluid passage to the at least one first connection port , d. wherein the device further comprises a second valve that is connectable to an inflator and can be used in order to pressurize the pressure tank (8, 8', 8"), when being connected to the device , with air, and e. the first valve is a check valve, characterized in that f. the check valve is a flap valve which is arranged such that it switches from the closed state to the open state when a valve of a tire to be inflated is interconnected with the first connection port . a. a housing , said housing comprising i. at least one first connection port and ii. at least one second connection port (4, 4', 4"), comprising connecting means to interconnect the device with a pressure tank (8, 8', 8") and iii. the at least one first connection port being fluidically connected to the at least one second connection port (4, 4', 4") by means of a fluid passage and i. at least one first connection port and ii. at least one second connection port (4, 4', 4"), comprising connecting means to interconnect the device with a pressure tank (8, 8', 8") and iii. the at least one first connection port being fluidically connected to the at least one second connection port (4, 4', 4") by means of a fluid passage and b. the device further comprising a first valve and c. when a pressure tank (8, 8', 8") is connected to the at least one second connection port (4, 4', 4"), i. the first valve in a closed state is suited to prevent air from flowing from inside of the pressure tank (8, 8', 8") out of the at least one first connection port and ii. the first valve in an open state is suited to allow passage of air from inside of the pressure tank (8, 8', 8") through the fluid passage to the at least one first connection port , i. the first valve in a closed state is suited to prevent air from flowing from inside of the pressure tank (8, 8', 8") out of the at least one first connection port and ii. the first valve in an open state is suited to allow passage of air from inside of the pressure tank (8, 8', 8") through the fluid passage to the at least one first connection port , d. wherein the device further comprises a second valve that is connectable to an inflator and can be used in order to pressurize the pressure tank (8, 8', 8"), when being connected to the device , with air, and e. the first valve is a check valve, characterized in that f. the check valve is a flap valve which is arranged such that it switches from the closed state to the open state when a valve of a tire to be inflated is interconnected with the first connection port . <EOS>