LPG PID diagram
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I seek advice from experts: What do N4, K1A, K2, N1, M2, N2, and HBD mean in the diagram?
N1-N4 in PID represent the numbers of the device ports; N is generally used as the number for process ports, and these numbers are usually assigned in sequence, starting from 1. The K mentioned in the diagram likely refers to the number of pressure ports; pressure ports are also often denoted by P. This information is usually provided in the device legend. It is recommended that LZ take a close look at the diagram on the home page
It’s not very clear. I took a quick look – it seems to be the PID of some kind of spherical tank, right? M2 is the equipment port from the spherical tank to the water cut tank. K1A and K1B should be the flange ports for the on-site level gauges in the water cut tank, while K2 is likely the flange port for pressure transmission. It’s not clear what N2 is for; it could be either a valve for shutting off flow or a line for filling with water. However, the 3/4 inch diameter limits my ability to figure this out. I’m not sure about HBD either; it’s recommended to consult the PID diagram to find out whether it relates to the sealed discharge of contaminated oil Still sewage? Or is it another N4 that’s blocked by the red line you drew?: (The above are merely personal opinions
Thank you; it’s obvious at a glance that it’s professional.
Thank you; I took a look at the other images and they indicate the opening numbers.