Posted: Thu Apr 28, 2011 11:37 am
Purge valve + diagnostic ( vac gauge) or could be just so it can be cleaned out easily 
I've got 13 plumbed up, and a spare bunged up ready to hook up a vac gauge in the engine bay if necessary, so the available connections get eaten up pretty quickly...
I've got 13 plumbed up, and a spare bunged up ready to hook up a vac gauge in the engine bay if necessary, so the available connections get eaten up pretty quickly...