What does this symbol mean in the P&ID?

2019-10-05View Original

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This post was last edited by hsh0877 on 2019-10-5 22:27. What do these two identifiers in the P&ID represent? I’d like to ask everyone!

Reply #22019-10-06

Grade boundary, or the boundary between manufacturers and suppliers

Reply #32019-10-07

What level of classification does it represent? What is usually seen is a hierarchical indication at the valve location

Reply #42019-10-07

The supplier boundary is generally indicated by a dashed line to mark the limit

Reply #52019-10-07

What kind of valve is the one in the middle?

Reply #62019-10-08

Take a look at the legend symbols provided in the PID diagram

Reply #72019-10-09

Are they the pressure measurement points before and after the control valve?

Reply #82019-10-10

I’ve studied it, but I really haven’t seen this symbol before! Estimate the sampling points before and after the valve?

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What does this symbol mean in the P&ID?

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