/ DM 505 - Sterile Air in an Ampoule Filling Machine
Valves in action –
Pressure reducing valve DM 505 Reducing the sterile air pressure in an ampoule filling machine
The pharmaceutical industry has particularly high requirements with regard to purity and safety of the plants. Microbial contamination must be reliably excluded during any phase of production and packing. Consequently, ampoules and small volume containers are sterilised and filled while exposed to a controlled directed flow of sterile air. By excluding non-sterile external air from this process, the ampoules and containers can be reliably kept germ-free and protected from recontamination by microorganisms until they are closed. In a filling and packaging plant for ampoules in Belgium the sterile air is made available at a central place and then distributed through pipelines.
The pressure reducing valve DM 505 reduces the sterile air pressure to the corresponding pressure required directly at the consumer, i.e. the filling and packaging plant. The single seated and diaphragm-operated pressure reducing valve is designed for a temperature range of -35 °C through to +130 °C and reduces the outlet pressure to 0.5 - 2.5 bar. The elastomers which come into contact with the medium are in compliance with the FDA and USP Class VI rules and regulations. The valve’s inlet and outlet sides are equipped with aseptic Tri-Clamp pipe joints.
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