Patent ID: 11969743
Assignee: nan
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. Dispenser system for a pumpable product, comprising a rigid or pliable product container and a dispensing device with a pump apparatus, wherein the pump apparatus comprises at least one first valve group for conveying the product out of the product container, as well as a second valve group for feeding air into the product container, wherein the second valve group defines a feed duct in which at least one filter unit for filtering sterile air is arranged and wherein the pump apparatus is arranged to introduce a volumetric quantity of sterile air into the product container that is greater than the volumetric quantity of the product to be supplied, so that a positive pressure of sterile air is settable in the product container by sterile air, wherein the pump apparatus is designed as a manually operable double-pump apparatus and comprises a double-piston system for simultaneous conveying of the product out of the product container via negative pressure and introduction of the sterile air into the product container via positive pressure, so that sterile air and product are conveyed simultaneously into and out of the product container by a single piston actuator.