Abstract: A beverage dispenser includes a cylinder having a pair of chambers, one for dispensing water and the other for dispensing a syrup. A separate piston is in each chamber and the pistons are connected to operate in unison. The water dispensing chamber is connected at one side of its piston to a source of drinking water and to a dispensing nozzle, and is connected at the other side of its piston to an operating medium, such as a liquid or gas under pressure. The syrup dispensing chamber is connected to a source of syrup and to a dispensing nozzle. The operating medium enters the first chamber to move the pistons and force water and syrup from their respective chambers to the dispensing nozzles where they are dispensed into and mixed together in a drinking container. The cylinder includes means for returning the pistons to their initial positions and causing water and syrup to refill the chambers.