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Hi, Following two suggestions may be useful: 1. Keep continuous flow ( through 1" control valve on 1" line)into the tank. Put split range control valve on the 1" vent line . The set point may be 0.2- 0.25kg/cm2g. At 0-50% range inlet control valve will open and try to...

Dear Razif, The following things may be interesting although the use of Actvated carbon sounds pretty well. 1. What I understand the antifoam solution itself gets degraded after doing its job.This can also cause foaming. 2. Some of the tower packings must have got displaced...