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Check valves play a critical role in water treatment systems by preventing reverse flow and protecting pumps, pipelines, filters, and other process equipment. Although they operate automatically without external actuation, selecting the correct check valve is essential for system reliability. In water treatment applications, valve performance depends not only on flow direction but also on pressure...
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A stop check valve on a boiler feedwater line is not selected simply because reverse flow is possible. The real question is whether one valve must perform three duties at the same location: allow stable forward flow from the feed pump, close automatically against reverse flow when the pump trips or pressure reverses, and provide a manual stop function when the line or boiler needs to be isolated. ...
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