Identification a Symbol for P&ID's Standards

Question

i have a question regarding on PID standards ISO 14617. Below is the attached symbol graphic, i seem cannot find anywhere what actually this symbol refer to from standards that i have looked up; PIP, ISO, DIN and BS.
I would appreciate if anyone could clarify this to me and also it would be great to have a website or anything on where i could refer for more information about standards.
Thank you
so here i attached the diagram, i did lookup to https://www.edrawsoft.com/pid/images/pid-legend.pdf
it says triangle separator, 
so here is the diagram that i refer to

NMech · Answer

In process engineering, you may use it as a check valve, although the most common used symbol for check valves is:

The symbol in the OPis most commonly used in electronic diagrams, and it is used to describe a diode  (there is such think as a VS9 diode datasheet).

Mark · Answer

I would guess it's a non-standard symbol for a check valve. @NMech is correct that it looks like a diode, but that would not appear on a P&ID. A check valve is a fluid flow equivalent of a diode though. I did find a reference that shows that symbol as a check valve here.

Answered by Mark on August 17, 2021

Identification a Symbol for P&ID's Standards

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