A metering dispenser for simultaneously or selectively discharging two media, including an outlet opening, a first reservoir for a first medium, a first metering-conveyor device for conveying the first medium from the first reservoir, a second reservoir for a second medium, a second metering-conveyor device for conveying the second medium from the second reservoir, a mixing chamber arranged upstream of the outlet opening and in which the first medium, conveyed by the first metering-conveyor device, and/or second medium, conveyed by the second metering-conveyor device, is stored temporarily, and an output-conveyor device for conveying the medium or media from the mixing chamber to the outlet opening. The first metering-conveyor device has the form of a metering-pump device with a variable-volume metering chamber, an inlet fluidically connected to the first reservoir and having an inlet valve, and an outlet fluidically connected to the mixing chamber and having an outlet valve.

A discharge head for a dispenser including a securing element coupling the discharge head to the dispenser, a housing having an outlet opening, and a valve body. The valve body closes the outlet opening when the pressure of a medium in the discharge head is below a threshold value, and in a ready-for-use state the valve body releases the outlet opening when the pressure of the medium in the discharge head is above the threshold value. The valve body is mounted over a travel path for releasing and closing the outlet opening, and a locking handle moves in relation to the securing element in order to transfer the discharge head into a locked state in which the travel path of the valve body is reduced to zero, and/or in order to transfer the discharge head from the locked state into the ready-for-use state.

A dispensing head including:a cap having: an outer wall with at least one part referred to as the shell part and at least one part referred to as the pressing part that is made of a material more flexible than the at least one shell part; at least one outlet; an insertion orifice,a stopper, the stopper being mounted in the cap by being inserted into the cap from the insertion orifice side and in an insertion direction, at least one assembly, each assembly comprising: an inlet, passing through the stopper; a deformable pocket, an interior volume of which is intended to contain the fluid of this assembly and is delimited at least in part by the at least one pressing part of the cap; preferably a feed duct and/or a dispensing duct.

Spray dispenser for nasal drugs includes a non-pressurized bottle for storing medical fluids in particular of drugs and other sterile fluids, a mounting body mounted to the top of the bottle and an actuating body, wherein the bottle, the mounting body and the actuating body are aligned along a longitudinal axis, and wherein the actuating body is slideably attached to the mounting body along the longitudinal axis and movable between an actuating position and a non-actuating position, wherein the spray dispenser includes an applicator nozzle and an actuating section for moving the actuating body into the actuating position, characterized in that the applicator nozzle has a nozzle axis which is inclined with respect to the longitudinal axis, the applicator nozzle facing away from the actuating section.

A pump body structure includes: an air inlet cylinder, an air inlet cavity being arranged inside the air inlet cylinder, and an air return hole being arranged in a bottom portion of the air inlet cylinder; a liquid inlet cylinder connected to the bottom portion of the air inlet cylinder; a lower cover connected to the bottom portion of the air inlet cylinder, a cavity being defined by the lower cover, an outer side wall of the liquid inlet cylinder and a bottom wall of the air inlet cylinder, and an air return channel being reserved between the lower cover and the liquid inlet cylinder; and an elastic stop valve arranged in the cavity, the elastic stop valve being configured for elastically covering a bottom portion of the air return hole.

In one general aspect, a flow control valve includes: a housing including a tubular wall surrounding an interior passage, and a flow control section in which the tubular wall includes a conical inner wall surface; a protrusion disposed on an exterior surface of the tubular wall at the flow control section; a sealing member disposed in the housing and configured to be selectively moved to a sealing position in which the sealing member engages the conical inner wall surface to restrict flow of a fluid through the interior passage; and a recess disposed the conical inner wall surface and configured to allow the fluid to flow past the sealing member through the recess when the sealing member is in the sealing position, wherein the recess and the protrusion are radially aligned on the tubular wall.

A precompression system for a liquid dispensing device is presented, that prevents liquid from being discharged until a predetermined pressure has been built up. The system comprises a pump for drawing liquid through an inlet and discharging it through an outlet, and a precompression valve disposed between the pump and the outlet. The valve allows liquid in the pump to reach the outlet once the predetermined pressure is established, and stops liquid from reaching the outlet once the pressure falls below it. The precompression valve comprises an elastic diaphragm normally closing the valve opening, with a concave surface facing the valve opening and in fluid communication with the pump and a convex surface in fluid communication with atmospheric pressure. The diaphragm may be stretched around a valve seat. Methods of assembling such a precompression system in a dispensing device are also presented.

A processing liquid is sent to a discharge nozzle through a processing liquid valve to discharge the processing liquid from the discharge nozzle toward a substrate. The processing liquid valve controls a flow of the processing liquid in a flow channel that is connected to the discharge nozzle, depending on a pressure of a working fluid that is supplied thereto. A fluid pressure adjustment unit adjusts behavior of a variation of a pressure of the working fluid that is supplied to the processing liquid valve, depending on an adjustment parameter that is set variably. The processing liquid that is sent to the discharge nozzle through the processing liquid valve is limited to stop discharge of the processing liquid from the discharge nozzle. Correlation data are acquired between a working fluid parameter that indicates behavior of a variation of a pressure of the working fluid and the adjustment parameter.

A device for dispensing a fluid includes a pocket whose interior volume is delimited by a deformable wall; a pressing surface; a dispensing part including a dispensing cavity, an outlet; a dispensing orifice connecting the pocket to the dispensing cavity, and a dispensing valve located in the dispensing cavity.

Described herein is a fluid dispensing device that enables rapid fluid mixing of separate solutions prior to dispensing. Also described herein are methods of using and manufacturing the fluid dispensing device. The fluid dispensing device is useful with a variety of reactive and/or concentrated formulations, including cleaning formulations.