Method of and dispensing head for increased carbonation

A carbonation maintaining flow control device connectable to a pressurized source of carbonated water, comprising:

• a housing body, the body defining a flow control space therein, and the control space having an end surface and an interior flow surface around an interior perimeter thereof, and the body having an inlet port extending partially there through, the port having a first end for connecting to the carbonated water source and a second end opposite therefrom and terminating at the control space end surface, and the body having an outlet port extending partially there through, the outlet port having a first end terminating at the control space flow surface and a second end for connecting to a dispensing valve,
• a flow control means retained within the flow space adjacent the end surface thereof for providing regulated flow rate control of the carbonated water from the inlet port second end to the control space,
• a piston having a first end and a second end, and held within the flow control space, and the piston having an exterior perimeter flow surface extending between the ends thereof, and the piston having a flow port extending there through from the piston first end towards the piston second end and the flow port having a first end terminating at the piston first end and in fluid communication with the flow control means, and the flow port having a second end terminating at the piston flow surface at a point thereon between the piston ends, and the piston exterior surface held adjacent the flow control space interior surface, the piston surface and the interior surface defining a restricting flow chamber and the piston flow port providing for the flow of carbonated water from the flow control means through the piston flow port and into the restricting chamber, and the restricting chamber in fluid communication with the outlet port first end for providing fluid communication of the carbonated water from the restricting chamber to the dispensing valve, and the piston surface and the interior surface spaced from each other so that the flow of carbonated water through the chamber is restricted for permitting gradual reducing of the pressure of the carbonated water as it flows from the flow control means to the outlet port, and wherein the restricting chamber limits any turbulence of the carbonated water as it flows there through to retain carbon dioxide gas in the carbonated water.