Car Seal

Written by Jerry Ratzlaff on . Posted in Instrumentation

A Car Seal is specified on instrument bubbles on Piping and Instrumentation Diagram.

  • Abbreviated as CS

Car Seal Open

Denoted on P&ID and PFD diagrams.

  • Abbreviated as CSO

Car Seal Closed

Denoted on P&ID and PFD diagrams.

  • Abbreviated as CSC

The tagging closed of a valve.