Dispensing head for a trigger dispenser

A dispensing head for a trigger dispenser, applicable to a bottle containing a product to be dispensed, said dispensing head comprising:

• a frame for supporting components of the dispensing head, comprising a functional zone comprising a first reference plane, a frame port, a suction outlet port and a dispensing inlet port opening on said functional zone;
• a pressure chamber operatively connected to the frame port;
• a trigger to pressurize the product in the pressure chamber;
• a suction duct ending with the suction outlet port for transporting the product suctioned from the bottle;
• a dispensing duct extending from the dispensing inlet port along a dispensing axis (W), for dispensing the product to external environment;
• and
• a valve device applied to the functional zone, comprising a suction shutter cooperating with the suction outlet port and a dispensing shutter cooperating with the dispensing inlet port to carry out a precompression of the product before dispensing;
• wherein said valve device cooperates with the first reference plane of the frame to form a precompression chamber upstream of the dispensing inlet port, which can be fed by the product exiting from the frame port, wherein said functional zone comprises an annular chamber wall, provided with openings passing through a thickness, surrounding the dispensing inlet port, at least partially delimiting said precompression chamber, wherein the valve device comprises a valve body provided with a membrane that delimits at a top said precompression chamber, resting on the annular chamber wall.