A valve for selectively closing and selectively opening a gas cartridge for a water carbonator, the valve is configured to hold a gas in the gas cartridge when the valve is closed and to provide a fluidic connection when the valve is opened, the valve has a valve housing having a cartridge connector opening that is oriented along a longitudinal axis of the valve, so that the gas is able to flow into the gas cartridge and flow out of the gas cartridge in a direction of the longitudinal axis, the valve housing has at least one outlet opening arranged externally and arranged along a direction parallel to the longitudinal axis so that the gas is able to flow from the valve in the direction parallel to the longitudinal axis, and the at least one outlet opening is arranged spaced apart from the longitudinal axis.