Help needed! What are the pipe dimensions for the connections of special pipe fittings in the PID diagram?
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As shown in the diagram, it is a special flame arrester for pipes connected to the atmosphere; there are pipes and flanges connected below it. How can one determine the pipe size from the markings on it?
In VA-80-A1J, does the 80 refer to the pipe size? There are no indications of diameter changes in the diagram either; it seems that everything is DN80
I see! ! ! Do you know what NNNN-42 means?
First, look at the homepage image to understand the meaning of each code. DN80。
DN80 pipe, with a pipeline grade of A1J?
There are examples on the first page of the process flow diagram; it is recommended to take a look.
The specific specifications, dimensions, and routing of the pipelines should be referred to in the single-line diagram, as flow diagrams do not show this kind of detailed information. It can only display the starting and ending points of each pipeline, the pipeline number, as well as some important fittings, valves, instruments, etc. within the pipeline.
This should be DN80; pipe fittings don’t have their diameter specified separately – it’s necessary to look at the pipeline designation.
Generally, if there is a change in diameter, it will be indicated in the drawings