 PID-Rev-1 has been uploaded for your approval. We have shown  by-pass arrangement for 1st and 2nd effect. 
Following are the changes incorporated in PID 
1.	For concentrate lines- from 1st to 3rd effect and from feed to 2nd effect
2.	For vapor line – from 1st to 3rd effect. You have to put blank in vapor line whenever there will change over.
3.	For condensate lines- from 1st  to 3rd  effect .  

Please send your approval for the PID as soon as possible. 
