Sterilizable blowing air paths and stretching rod of a blow moulding machine

An apparatus for forming plastic preforms into plastic containers, wherein the apparatus has a transport device for transporting the plastic preforms, wherein the transport device has a movable carrier on which a plurality of forming stations are arranged, wherein the forming stations each form a cavity and comprise forming moulds which are configured to receive plastic preforms which are formable into plastic containers within the cavity of the forming station, in that the plastic preforms are acted upon by a flowable medium and expanded, wherein the forming stations further comprise an flow applicator configured to act upon the plastic preforms with the flowable medium, and at least one connecting line, which is configured to guide the flowable medium to the flow applicator, and wherein the apparatus further has a sterilization device, whereby at least a section of this connecting line can be at least temporarily pressurized with a sterilization medium, wherein

• the forming station has a closing device configured for closing the flow applicator, wherein the closing device has a movable and pivotable closing element configured to close the flow applicator during a sterilization process,
• the closing element is configured to seal the flow applicator in such a way that a sterilization medium cannot escape from the flow applicator and does not get into the plastic preforms or into other areas of the apparatus,
• the apparatus has sterile filters in each supply line, wherein to sterilize the sterile filters, blow air paths, the flow applicator and a stretching rod, the sterilization medium is fed via the supply line to the flow applicator, and
• two supply lines for supplying the sterilization medium and two discharge lines for discharging the sterilization medium are assigned to or arranged at each forming station.