Compact dispensing device

A dispensing device comprising:

• a bottle provided with a neck having a neck axis (X), wherein the neck delimits internally a neck compartment;
• a trigger dispensing head applied to the neck of the bottle in a separable manner, the trigger dispensing head comprising:
• a) a socket at least partially housed in the neck compartment;
• b) a main body comprising a cylinder extending along a main axis (Z) coinciding with the neck axis (X) and a dispensing tube having at least a first section extending along a secondary axis (W) parallel to and spaced from the main axis (Z), wherein the main body is at least partially inserted in the socket, thereby delimiting, in a portion contained in the neck compartment of the socket, a valve compartment;
• c) a valve group comprising a pre-compression valve, which allows the passage of the product to be dispensed when the pressure in a dosing chamber exceeds a predefined threshold pressure, and a non-return valve, the valve group housed in the valve compartment of the socket;
• d) a sealably sliding piston in the cylinder;
• e) a trigger group engaged with the piston, comprising a trigger for actuating the dispensing device;
• and
• f) elastic return elements engaged with the trigger or with the piston, operating permanently to bring the dispensing device to an initial resting configuration.