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Design D 640 (bottom seat valve / tank outlet valve)• Product loss free switching(leakage free)• Cyclic lift functions for cleaning ofleakage chamber• Lower valve disc radial sealRSC (Radial Seal Complete)1. Valve closed2. Valve open3. Cyclic lift of lower valve disc4. Cyclic lift of upper valve disc1. 2.3. 4.DESIGN D 650 (for ring pipes)• Product loss free switching(leakage free)• Cyclic lift functions for cleaning ofleakage chamber• Lower valve disc radial sealRSC (Radial Seal Complete)1. Valve closed2. Valve open3. Cyclic lift of lower valve disc4. Cyclic lift of upper valve disc1. 2.3. 4.DSV COMPLETE double seat valves11
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