Aligning objects to Pipes

[LouiseMarnoch]

How can I set my valves and other objects 90 degrees to the pipeline so they are represented like this : -----|----

 Currently they look like this:

[MikeMillerGIS]

I would suggest using the Attribute Assistant Junction Rotate method

All methods - Attribute Assistant | ArcGIS Solutions 

[SSMIC3038]

Yup, that's what I use.