Suction flow measurement of an (atmospheric) air blower is the total flow of the blower. Discharge flow could be either the total or the net flow depending on the flow location relative to the location of the blow off line/valve. So, comparing total in suction to net in discharge would/could be...
Antisurge control valves should stroke as fast as possible with general guideline of less than 2 seconds closed to open and say less than 4 seconds open to closed. generally either piston or diaphram will stoke this fast if volume boosters are added (2 for piston, 1 for diaphram). I discourage...