Carbonation machine with fixed carbonation pulse duration

A carbonation head comprising:

• a carbonation lever configured to be operated by a user to assume a carbonation position to carbonate a liquid in a bottle connected to the carbonation head;
• a plunger for operating a valve of a gas canister between a closed position and an open position, whereby, when the carbonation lever assumes a carbonation position, the plunger causes the valve to open so as to allow carbon-dioxide from the gas canister to flow into the bottle to carbonate the liquid;
• and
• a bar having a length that is configured to vary over time configured to interact with the carbonation lever such that when the carbonation lever assumes the carbonation position the length of the bar changes over a fixed duration, so as to cause the plunger to move to the closed position and cause the valve to close.

A carbonation method comprising:

• operating a carbonation lever to assume a carbonation position to carbonate a liquid in a bottle connected to the carbonation head;
• using a plunger to operate a valve of a gas canister between a closed position and an open position, whereby, when the carbonation lever assumes a carbonation position, the plunger causes the valve to open so as to allow carbon-dioxide from the gas canister to flow into the bottle to carbonate the liquid;
• and
• using a bar having a length that is configured to vary over time configured to interact with the carbonation lever such that when the carbonation lever assumes the carbonation position the length of the bar changes over a fixed duration, so as to cause the plunger to move to the closed position and cause the valve to close.