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Caleffi Differenzdruck Überströmventil DN20 3 4" Einstellbar 10 60 kPa, 10 bar, für Wasser und Glykollösungen 518500 Fernwärmerohre tWW = 45°C tWW = 45°C das nach der europäischen Norm EN15632 1 CALEFFI Differenzdruck Überströmventil 518500 das für die Differenzdruck Überströmung in industriellen Anlagen eingesetzt wird
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