Dear all, is it good (will it work well) to perform flow regulation of screw pump with pressure control at the outlet (with recirculation valve) and flow control valves at loading arms measuring lines downstream of the pump . The pump is transfer vacuum residue to the 8 loading arms for rail truck loading. Every loading arms has his own measuring line with flow control valve. Pump capacity is 800 m3/h. The problem for other type of regulation (VFD) is that at start of the loading, flow control valves reduced capacity from normal (100 m3/h; every loading arms-flow control valves) to 40 m3/h and loading must be performed when only one loading arms is in function but also all eight. Every advice will be helpful. Thanks in advance
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Edited by suljaga, 15 February 2020 - 03:33 PM.