Abstract: Preferred embodiments of the invention have a nozzle assembly capable of controlling pressure of comestible fluid exiting the nozzle assembly, a refrigeration system in which refrigerant pressure and temperature is controllable to enable comestible fluid temperature control, heat exchangers cooling comestible fluid in the nozzles, an ultraviolet sterilization system for sterilizing interior and exterior system locations, and a hand held comestible fluid dispenser capable of cooling and selectively dispensing one of several comestible fluids. Fluid pressure and velocity can be reduced for improved dispensing by a valve movable through a number of closed positions prior to opening and/or by a diffuser in the nozzle having an increasing cross sectional area upstream of a nozzle portion having a relatively constant cross sectional area. A purging and priming valve assembly with or without associated sensors can be employed for manual or automatic system purging and priming and for fluid temperature control.

Abstract: Preferred embodiments of the present invention have a nozzle assembly capable of controlling pressure of comestible fluid exiting the nozzle assembly, a refrigeration system in which refrigerant pressure and temperature is controllable to enable control of comestible fluid temperature, heat exchangers connected to cool comestible fluid in the nozzles, an ultraviolet sterilization system for sterilizing locations outside and inside the system, and a hand held comestible fluid dispenser capable of cooling and selectively dispensing one of several comestible fluids supplied thereto. To improve temperature control and cooling efficiency, the present invention preferably employs heat exchangers adjacent to the nozzle assemblies. The present invention can take the form of a multi-fluid dispensing gun having such a nozzle and heat exchanger relationship and having the pressure controlling valve as described above.

Abstract: Preferred embodiments of the present invention have a nozzle assembly capable of controlling pressure of comestible fluid exiting the nozzle assembly, a refrigeration system in which refrigerant pressure and temperature is controllable to enable control of comestible fluid temperature, heat exchangers connected to cool comestible fluid in the nozzles, an ultraviolet sterilization system for sterilizing locations outside and inside the system, and a hand held comestible fluid dispenser capable of cooling and selectively dispensing one of several comestible fluids supplied thereto. To provide comestible fluid at rack pressure to the nozzles in one highly preferred embodiment, each nozzle preferably has a valve movable through a number of closed positions to change pressure within the nozzle. Prior to fluid dispense, pressure at the nozzle is preferably reduced by actuating the valve through its range of closed positions.

Abstract: A nozzle assembly is disclosed which is capable of controlling pressure of comestible fluid exiting the nozzle assembly. To provide comestible fluid at rack pressure to the nozzle of the nozzle assembly, the nozzle can be provided with a valve movable through a number of closed positions to change pressure within the nozzle. Prior to fluid dispense, pressure at the nozzle is preferably reduced by increasing a volume within the nozzle assembly, such as by actuating the valve through its range of closed positions.

Abstract: Preferred embodiments of the present invention have a nozzle assembly capable of controlling pressure of comestible fluid exiting the nozzle assembly, a refrigeration system in which refrigerant pressure and temperature is controllable to enable control of comestible fluid temperature, heat exchangers connected to cool comestible fluid in the nozzles, an ultraviolet sterilization system for sterilizing locations outside and inside the system, and a hand held comestible fluid dispenser capable of cooling and selectively dispensing one of several comestible fluids supplied thereto. To provide comestible fluid at rack pressure to the nozzles in one highly preferred embodiment, each nozzle preferably has a valve movable through a number of closed positions to change pressure within the nozzle. Prior to fluid dispense, pressure at the nozzle is preferably reduced by actuating the valve through its range of closed positions.

Abstract: Preferred embodiments of the present invention have a nozzle assembly capable of controlling pressure of comestible fluid exiting the nozzle assembly, a refrigeration system in which refrigerant pressure and temperature is controllable to enable control of comestible fluid temperature, heat exchangers connected to cool comestible fluid in the nozzles, an ultraviolet sterilization system for sterilizing locations outside and inside the system, and a hand held comestible fluid dispenser capable of cooling and selectively dispensing one of several comestible fluids supplied thereto. To provide comestible fluid at rack pressure to the nozzles in one highly preferred embodiment, each nozzle preferably has a valve movable through a number of closed positions to change pressure within the nozzle. Prior to fluid dispense, pressure at the nozzle is preferably reduced by actuating the valve through its range of closed positions.

Abstract: Preferred embodiments of the present invention have a nozzle assembly capable of controlling pressure of comestible fluid exiting the nozzle assembly, a refrigeration system in which refrigerant pressure and temperature is controllable to enable control of comestible fluid temperature, heat exchangers connected to cool comestible fluid in the nozzles, an ultraviolet sterilization system for sterilizing locations outside and inside the system, and a hand held comestible fluid dispenser capable of cooling and selectively dispensing one of several comestible fluids supplied thereto. To provide comestible fluid at rack pressure to the nozzles in one highly preferred embodiment, each nozzle preferably has a valve movable through a number of closed positions to change pressure within the nozzle. Prior to fluid dispense, pressure at the nozzle is preferably reduced by actuating the valve through its range of closed positions.