The Air Movement and Control Association (AMCA) International has revised ANSI/AMCA Standard 500-D, Laboratory Methods of Testing Dampers for Rating. Designated AMCA Standard 500-D-18, the newly ...
Flow is controlled by either throttling or diverting it. Throttling involves reducing orifice size until all of the flow cannot pass through the orifice; bypassing involves routing part of the flow ...
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