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Membrane pump for pumping gaseous, liquid and pasty materials comprises a membrane valve having a holding-down device preventing downstream lifting of a valve membrane from a valve plate
Membrane pump for pumping gaseous, liquid and pasty materials comprises a membrane valve having a holding-down device preventing downstream lifting of a valve membrane from a valve plate
Membrane pump (1) comprises a membrane valve (10, 11, 11') having a holding-down device (14, 18') preventing downstream lifting of a valve membrane from a valve plate. Preferred Features: The valve plate is made of a thermally insulating material, preferably polyetheretherketone (PEEK). The membrane valve has circular valve channels (12, 16, 16') and a disk membrane (13, 17, 17') with central fixing. The holding-down device is a circular disk radially arranged within the valve channels.
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