I'm an EE trying to interpret a pneumatic schematic and have a few questions regarding the symbols being used.
I've come across two different regulator symbols (or so I believe them to be regulator symbols). I'm curious if someone could break down the difference between each.
Here are my interpretations and questions for each symbol:
I believe this symbol represents a pressure regulator. The spring indicates that it is a pressure regulator valve. However, I'm somewhat confused as to what the dashed line is meant to represent. Is it just meant to represent a feedback line for regulation purposes?
This symbol is similar to symbol 1, however, it differs in how the arrow is oriented. What is the significance of the arrow direction?