Boiler and dispenser system for a hot beverage vending machine

A boiler and dispenser system for a hot beverage vending machine, comprising:

• a pressurized, closed boiler, which comprises a water intake;
• a dispenser, configured to allow a passage of water towards a selected hot beverage serving;
• a first pipe, interconnecting the boiler and the dispenser;
• a first three-way valve, which comprises a seat and a pilot joined to said seat, wherein the seat of the first three-way valve is integrated in the boiler, the said first three-way valve being disposed adjacently to the boiler and comprising:
• a first way connected to a water inlet from the boiler,
• a second way connected to an outside air inlet, and
• a third way connected to an outlet connected to the first pipe, for communicating the boiler with the dispenser through the first pipe;
• the first three-way valve being designed for selectively:
• allowing a circulation of water coming from the boiler towards the dispenser along the first pipe by the third way through the first way, or
• allowing a circulation of air coming from the outside towards the dispenser along the first pipe by the third way through the second way;
• and
• a control card configured to control opening of the first three-way valve and operation of the dispenser,
• for allowing drainage of the first pipe after dispensation of the selected hot beverage serving to purge water from the boiler and dispenser system downstream from the boiler towards the dispenser.