Fittings P&ID symbol

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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
Breather
Gooseneck vent
Sample cooler
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