

This refers to Falling film evaporator (FFE) (tag no.V100DS30WV100) drawing sent by you for  section AA of the tube.  Drg. again given below.  As per the specifications, the main tube OD of FFE is 25.4 mm and ID is 20.4 mm for tube thickness of 2.5 mm.  So short tube which goes inside the main tube should be of 20.4mm OD.  So please confirm the dia. of this short tube.  - Nimbalkar 
