Vacuum brake valves through the cab door.
Class 08 08266 (1957)
RichardAsh1981
CC BY-SA 2.0
<a rel="nofollow" class="external free" href="https://www.flickr.com/photos/30661871@N03/49818302373/">https://www.flickr.com/photos/30661871@N03/49818302373/</a>