The purpose of the present invention is to enable a metering chamber and a propellant-accommodating space region to be reliably isolated from each other at a metering valve mechanism, where contents placed in an inner bag is discharged from the metering chamber to the outside space by means of an annular piston which is moved by pressure from the propellant acting thereon and is for configuring the metering chamber, the isolation being achieved by preventing the contents loaded into the inner bag from leaking through both inner and outer edges of a contents-receiving surface section of the annular piston to a propellant-receiving surface side on the other side thereof. For example, an annular piston 8 of a bag-on-valve type metering valve mechanism is composed of a lower surface section for having act thereon the pressure from contents to be sprayed, which are loaded via a stem vertical center passage section 6a and an inner housing 3 (3a+3b), and an upper surface section disposed on the other side thereof and having act thereon the pressure from a propellant via an upper vertical hole part 4f. An inner lower-side inverted skirt-like section 8b for providing a seal with the outer peripheral surface of the inner housing 3 and an outer lower-side skirt-like section 8b for providing a seal with the inner peripheral surface of an outer housing 4 are formed at least at the edges of the lower surface section.

The present device dispenses product from a pressurized container. The device has a metered valve that dispenses a predetermined fixed quantity of product upon actuation. The metered valve can be configured by the customer with a spacer to affect the amount of product continually metered.

The present device dispenses product from a pressurized container. The device has a metered valve that dispenses a predetermined fixed quantity of product upon actuation. The metered valve can be configured by the customer with a spacer to affect the amount of product continually metered.

Dispenser with a reservoir for storing liquid, and a discharge opening through which the liquid can be dispensed. The dispenser includes a metering device for discharging a defined liquid quantity upon actuation of the dispenser. The metering device at the entry side is connected to the reservoir and at the exit side is connected to the discharge opening. The metering device includes a pre-metering chamber which via an infeed duct is connected to the reservoir, and a main metering chamber which via an intermediate duct is connected to the pre-metering chamber, and via a discharge duct is connected to the discharge opening. The pre-metering chamber and the main metering chamber each have one repositionable wall, the respective chamber volume being variable by repositioning the wall. The walls are operatively coupled such that a volumetric enlargement of the pre-metering chamber causes a volumetric reduction of the main metering chamber.

The present device dispenses product from a pressurized container. The device has a metered valve that dispenses a predetermined fixed quantity of product upon actuation. The metered valve can be configured by the customer with a spacer to affect the amount of product continually metered.

Dispenser with a reservoir for storing liquid, and a discharge opening through which the liquid can be dispensed. The dispenser includes a metering device for discharging a defined liquid quantity upon actuation of the dispenser. The metering device at the entry side is connected to the reservoir and at the exit side is connected to the discharge opening. The metering device includes a pre-metering chamber which via an infeed duct is connected to the reservoir, and a main metering chamber which via an intermediate duct is connected to the pre-metering chamber, and via a discharge duct is connected to the discharge opening. The pre-metering chamber and the main metering chamber each have one repositionable wall, the respective chamber volume being variable by repositioning the wall. The walls are operatively coupled such that a volumetric enlargement of the pre-metering chamber causes a volumetric reduction of the main metering chamber.

The present device dispenses product from a pressurized container. The device has a metered valve that dispenses a predetermined fixed quantity of product upon actuation. The metered valve can be configured by the customer with a spacer to affect the amount of product continually metered.

A high flow valve for use in conjunction with a compressed gas, an aerosol or in bag-on-valve applications, and particularly to a valve having a housing that is supported by a mounting cup for a product container or can, and communicates with a product or product containment bag inside the can. A radial opening or orifice of the valve is positioned closer to a lower seal of the valve stem, rather than an upper seal or mounting cup gasket, to facilitate an increased flow rate for dispensing the product from the container and the valve.

An apparatus for dispensing a metered dose of a product, and a method for using the apparatus. The dispensing device has a charging configuration in which an outlet (112; 212) is closed and a metering chamber (120; 220) is configured to expand to its expanded configuration while receiving product through an inlet (111; 211). It also has a discharging configuration in which the outlet (112; 212) is open and the metering chamber (120; 220) is configured to contract to its contracted configuration while expelling the received product through the outlet (112; 212), thereby dispensing a metered dose of product. The dispensing device further comprises a latch mechanism (140; 240), configured to retain the dispensing device in the charging configuration until the metering chamber (120; 220) attains its expanded configuration. The method comprises actuating an actuator (130; 230) of the dispensing device, to fill the metering chamber, and releasing the actuator to dispense the metered dose of product.

The present device dispenses product from a pressurized container. The device has a metered valve that dispenses a predetermined fixed quantity of product upon actuation. The metered valve can be configured by the customer with a spacer to affect the amount of product continually metered.