British Railways Davies & Metcalfe Locomotive Air Valves EV-4/5 AB-96-01/AB-92-9
£363.70
Fitted to a variety of BR locomotives including the Class 20, 33, 47 etc. No way to test, though, so buy with a view to testing or overhauling them. D&M Part numbers AB-96-01/AB92-9 as per pictures.
