I need to install pressure control valve on the bypass line of the heat exchangers. It must maintain a constant pressure at the outlet of the pumps before the heat exchangers. The problem is I do not know for which flow to design pressure control valve. Pumps will work each at 50% of system capacity. Will I design flow for:
-a minimum flow for 2 pumps - 84 m3 / h
-or nominal flow rate for one pump 230 m3 / h
-or nominal flow rate for two pumps 460 m3 / h?
I thought to use linear type valve. The process image is attached.
Tnx!!!!