P&ID (piping & instrumentation diagram) Symbol

What does the symbol in the red circle mean and what does the K in k 01001 stand for



It is not clear.

Please check the respective P&ID legend.

You will get the details there for each and every symbol used in the P&ID.

1 Like

K 01001 seems to be a positive displacement vacuum pump which is used to control the column pressure (by means of a variable frequency drive). Letter K may have been chosen to designate any kind of compressor.

Agree. Dont ask like this. We learn how to look up legend.

Yes. You are right.