Abstract: A dispensing pump includes a housing extending along a longitudinal axis and configured to be inserted in a bottle. The housing defines a dosing chamber and includes a venting hole. A retaining ring is fastened to the housing and inserted therein. A hollow stem is associated to a piston and inserted in a hole of the retaining ring leaving a passage. The hollow stem and piston are movable between a lowered position and a raised position corresponding to different volumes of the dosing chamber. A venting path includes at least the passage between the hollow stem and the retaining ring and the venting hole. Through the venting path a volume of air enters the bottle through the venting hole during the pump actuation to replace liquid pumped out from the bottle by the pump. A venting valve is interposed between the hollow stem and retaining ring, along the venting path.

Abstract: A dispensing pump includes a housing extending along a longitudinal axis and configured to be inserted in a bottle. The housing defines a dosing chamber and includes a venting hole. A retaining ring is fastened to the housing and inserted therein. A hollow stem is associated to a piston and inserted in a hole of the retaining ring leaving a passage. The hollow stem and piston are movable between a lowered position and a raised position corresponding to different volumes of the dosing chamber. A venting path includes at least the passage between the hollow stem and the retaining ring and the venting hole. Through the venting path a volume of air enters the bottle through the venting hole during the pump actuation to replace liquid pumped out from the bottle by the pump. A venting valve is interposed between the hollow stem and retaining ring, along the venting path.

Abstract: An actuating device for a dispensing pump of a dispenser is configured to be used on a container, in an upward position of the container. The actuating device includes a pouring cup and a connecting device. The pouring cup defines an inner chamber for receiving a metered amount of a product. The connecting device includes a hollow structure extending along a longitudinal axis between at least a first end and an opposite second end. The structure is connected and supports the pouring cup. The structure defines a channel extending along the axis between an input opening and an output opening. The output opening emerges into the inner chamber whereby the channel communicates with the inner chamber. The second end includes a connecting portion configured to be connected to a hollow stem of the dispensing pump whereby the channel communicates with a dispensing cavity defined by the stem.