Manufactured with top quality materials the valves are highly resistant to wear caused by continuous operation with abrasive slurries and sludge. The flexible sleeve provides maximum flow with minimal pressure drop across the valve at all times. The simple one-piece 'duckbill' sleeve eliminates the mechanical components and intrusive body structures that create problems in conventional check valve designs. EVR's duck bill valves can be customised to suit specific flow requirements and up to a diameter of 2,5m.
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