This is an example of the graphic representation of piping instruments in an elevation view.
Every piping instrument is labeled with the corresponding name from the model. If there is not enough white space for the label, it is placed offset from the piping instrument with a jogged leader. For an example of the label rule, see the above graphic.
Horizontal and vertical dimensions are placed on all piping instruments. Piping instruments are also dimensioned as anchors, which means they are dimensioned to other nearby objects. If a piping instrument is not close enough to a group of dimensioned objects in a particular quadrant, it is not dimensioned to that group of objects.