[0001] A canister for connection to a carbonation machine may comprise a body with an interior to hold a pressurized or liquefied gas for enabling the carbonation machine to carbonate a liquid; a valve comprising a canister port facing an interior of a gas canister and at least one exterior port that opens laterally to a longitudinal axis of the valve for facilitating inflow of the gas into and outflow of the gas out of the canister when the valve is in an open position, and to prevent the inflow or the outflow when the valve is in a closed position.