Abstract: A discharge device for a liquid medium includes a storage container for receiving a medium, a discharge head which can be secured on the storage container and comprises a discharge opening for discharging the medium out of the storage container, an outlet valve which is paired with the discharge opening and comprises a pretensioned valve element that delimits a valve pre-chamber by means of a pressure application surface formed on a membrane. The pressure application surface has a stationary clamping region on the outside, and a pressure equalization channel which opens into the storage container and comprises a filter assembly that operates microbiologically and is inserted into the pressure equalization channel.

Abstract: A discharge device for a liquid medium includes a storage container for receiving a medium, a discharge head which can be secured on the storage container and comprises a discharge opening for discharging the medium out of the storage container, an outlet valve which is paired with the discharge opening and comprises a pretensioned valve element that delimits a valve pre-chamber by means of a pressure application surface formed on a membrane. The pressure application surface has a stationary clamping region on the outside, and a pressure equalization channel which opens into the storage container and comprises a filter assembly that operates microbiologically and is inserted into the pressure equalization channel.

Abstract: A discharge device for a liquid medium includes a storage container for receiving a medium, a discharge head which can be secured on the storage container and comprises a discharge opening for discharging the medium out of the storage container, an outlet valve which is paired with the discharge opening and comprises a pretensioned valve element that delimits a valve pre-chamber by means of a pressure application surface formed on a membrane. The pressure application surface has a stationary clamping region on the outside, and a pressure equalization channel which opens into the storage container and comprises a filter assembly that operates microbiologically and is inserted into the pressure equalization channel.

Abstract: A discharge device for a liquid medium includes a storage container for receiving a medium, a discharge head which can be secured on the storage container and comprises a discharge opening for discharging the medium out of the storage container, an outlet valve which is paired with the discharge opening and comprises a pretensioned valve element that delimits a valve pre-chamber by means of a pressure application surface formed on a membrane. The pressure application surface has a stationary clamping region on the outside, and a pressure equalization channel which opens into the storage container and comprises a filter assembly that operates microbiologically and is inserted into the pressure equalization channel.

Abstract: One aspect of the invention provides a component 112, 165 for a fluid dispenser 110 which defines a dosing chamber 120 for a piston member 114 to stroke in and has an end 160 adapted for engaging a fluid outlet 152 of the fluid dispenser or a seal 154 which overlies the fluid outlet 152 to selectively close and open the fluid outlet 152 or seal 154. Other aspects are disclosed herein.

Abstract: Dispenser (1) for the dosed dispensing of liquid media, with a container (3) for holding a liquid medium (4), a manually actuated pump (5), which is arranged on the container (3) and comprises a flood chamber (6) into which liquid medium (4) flows when the container (3) is turned over, for which purpose the flood chamber (6) is fluidically connected at the inlet end to an outlet opening (7) of the container (3), and a dosing piston (8), which is displaceable by an actuating stroke, is arranged in the flood chamber (6) and expels dosed medium (4), and a media channel (9) extending through the dosing piston (8) is widened at the inlet end as a volumetrically defined cylinder portion (10) into which a plunger piston (11) protruding into the flood chamber (6) engages as a pressure piston in order to expel medium (4) introduced by gravity into the cylinder portion (10) of the dosing piston (8).

Abstract: One aspect of the invention provides a component 112, 165 for a fluid dispenser 110 which defines a dosing chamber 120 for a piston member 114 to stroke in and has an end 160 adapted for engaging a fluid outlet 152 of the fluid dispenser or a seal 154 which overlies the fluid outlet 152 to selectively close and open the fluid outlet 152 or seal 154. Other aspects are disclosed herein.

Abstract: One aspect of the invention provides a component for a fluid dispenser which defines a dosing chamber for a piston member to stroke in and has an end adapted for engaging a fluid outlet of the fluid dispenser or a seal which overlies the fluid outlet to selectively close and open the fluid outlet or seal. Other aspects are disclosed herein.

Abstract: Dispenser (1) for the dosed dispensing of liquid media, with a container (3) for holding a liquid medium (4), a manually actuated pump (5), which is arranged on the container (3) and comprises a flood chamber (6) into which liquid medium (4) flows when the container (3) is turned over, for which purpose the flood chamber (6) is fluidically connected at the inlet end to an outlet opening (7) of the container (3), and a dosing piston (8), which is displaceable by an actuating stroke, is arranged in the flood chamber (6) and expels dosed medium (4), and a media channel (9) extending through the dosing piston (8) is widened at the inlet end as a volumetrically defined cylinder portion (10) into which a plunger piston (11) protruding into the flood chamber (6) engages as a pressure piston in order to expel medium (4) introduced by gravity into the cylinder portion (10) of the dosing piston (8).

Abstract: Fluid discharge head having a discharge stub (5) which has a discharge opening (6) and in which an inner sleeve (7) is arranged which has a media channel (8) and which receives a spring-loaded valve body (10) self-acting closing the discharge opening (6) by a compression spring (20), the valve body (10) being formed as a cylindrical piston, which is axially displaceable in a cylinder chamber (12) formed by the inner sleeve (7), an upper valve seat (14) and a lower valve seat (15) being provided for the piston ends (16, 17), and the valve body (10) having an intermediate valve plate (18), which forms a chamber bottom of a pressure chamber (19) which is connected to the media channel (8) and in which, in order to open the upper valve seat (14), a media discharge pressure can be set and an opening characteristic is determined by a transmission ratio of the opening diameter of cylinder chamber (12) and media inlet in the area of the lower valve seat (15), characterized in that the transmission ratio is greater th

Abstract: A discharge head for fluids, with a discharge nozzle (1) which has a discharge opening (2) and accommodates an internal sleeve (5) in which is arranged an internal body (4) which delimits an outlet channel (7) and has a connecting element (8) for connection to a counterpart (9) of a discharging apparatus, the internal sleeve (5) having, on the end side adjacent to the discharge opening (2), a sealing surface (10) against which a valve stopper (3) which is located on the internal body (4) and closes the outlet channel (7) is spring prestressed.

Abstract: A discharge head for fluids, with a discharge nozzle (1) which has a discharge opening (2) and accommodates an internal sleeve (5) in which is arranged an internal body (4) which delimits an outlet channel (7) and has a connecting element (8) for connection to a counterpart (9) of a discharging apparatus, the internal sleeve (5) having, on the end side adjacent to the discharge opening (2), a sealing surface (10) against which a valve stopper (3) which is located on the internal body (4) and closes the outlet channel (7) is spring prestressed.