P&ID Typicals and Symbols Piping Process Deliverables Process Design

Fittings P&ID symbol

Commonly used P&ID symbols (Piping and Instrumentation Diagram symbols) for piping fittings. Note that they may differ slightly from one project to another.

Flange set
Blind Flange
Flow orifice
Removable pipe spool
Tee type strainer
Y type strainer
Basket type strainer
2 basket type strainer
End plug
End cap
Reducer / Expander
Hose connection
Open spacer
Closed spacer
Open spectacle blind
Closed spectacle blind
Mixing Tee
Sight glass
Gooseneck vent
Sample cooler


Sign up for free if you are not a member already.