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Rückschlagventil
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Rückschlagventil ist ein Ventil, dessen Öffnen und Schließen von dem Durchlauf des Fluides und äußerer Kraft abhängig sind und dabei den Rückschlag verhindert. Es gehört zu automatischen Ventilen und wird häufig bei der Rohrleitung, wo das Fluid nur in einer Richtung zugelassen wird, verwendet, um Unfall zu vermeiden. Die vier Hauptprodukte von BTL sind: Rohrverschraubungs-, Lifts- und Tellerrückschlagventil und Rückschlagventil mit zwei Rückschlagklappen.
API 6D/BS1868 Rückschlagventil mit Rohrverschraubung
API 6D/BS1868 Rückschlagventil mit Rohrverschraubung
1. As the channel within the valve is in streamline form, the flow resistance is smaller than lifting check valve, it's suitable for low flow large-caliber application without frequently change in flow. However, it's not suitable for pulsating flow for sealing performance poorer than lifting check valve. 2. Swing check valve is suitable for various operating conditions of pipeline for petroleum, chemical, pharmaceutical, chemical fertilizer and electric power industry. 3. Swing check valve is suitable for clean medium like water, oi..
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API 602 Rückschlagventil
API 602 Rückschlagventil
API 602 check valve includes two structures of swing check valve and lifting check valve. The valve clack of swing check valve is a disc and revolves around the revolving shaft of valve seat channel. The valve clack of lifting check valve moves along the vertical centerline of the valve body. 1. As the channel within swing check valve is in streamline form, the flow resistance is smaller than lifting check valve, it's suitable for low flow large-caliber application without frequently change in flow. However, it's not suitable for pu..
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API 594 Rückschlagventil
API 594 Rückschlagventil
The butterfly plate of API 594 double-clack check valve is two semicircular. The check valve uses spring-loaded valve clack which hanged on the center vertical pin shaft. When the valve is open, the resultant force of fluid is on the center of sealing face of valve clack, while the point of action of counter spring support force is on the center of valve clack surface so that the root of valve clack opens firstly. It avoids wearing of sealing face of old conventional valve when valve opens, and increase the persistence of valve seal. ..
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