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Gusseisen mit Rückschlagklappen Strömung in einer Richtung und erlauben nur automatisch schließen, wenn die Strömung sich umkehrt. Sie sind völlig automatisch in Aktion, bei dem Differenzdruck und Strömungsgeschwindigkeit in Abhängigkeit innerhalb der Linie ihre Funktionen des Öffnens und Schließens auszuführen

Die Scheibe und alle zugehörigen beweglichen Teile können in einem konstanten Zustand der Bewegung, wenn die Druckgeschwindigkeit nicht ausreichend ist, um die Scheibe in einer weit geöffneten und stabilen Position zu halten,.

Vorzeitige Abnutzung und verrauschten Betrieb oder die Vibration kann durch die Auswahl der Größe des Rückschlagventils auf der Grundlage der Strömungsverhältnisse statt des Rückschlagventils vermieden werden, die Auswahl entsprechend der Größe der Rohrleitung.