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Concentric Butterfly Valves

SIERRA model 7200 is concentric rubber lined valve, double flanged or wafer type that shall be suitable for installation between flanges. Face to face according to EN 558 table 5 basic series 20 valves are drilled in accordance with EN 1092-2. The disc has a profiled sealing edge which requires minimal deformation of the liner to achieve a tight sealing.

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