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  1. mepe15806

    Control Valve Flow Coefficient (Cv) Sizing for HW/CHW Systems

    ASHRAE Systems and Equipment Handbook indicates that control valves should be sized for a pressure drop of 25 to 50 percent of the pump head in order to obtain good control. I have seen many projects where all the valves are sized for a 5 psig pressure drop. I this "rule of thumb" method for...

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