McVitie Weston valve collection, Raytheon valve, type V.T.94
Raytheon valve, type V.T.94, marked 10E/108 AM 63, (RMW/Y420A - McVitie Weston number), by Raytheon Manufacturing Company.
Raytheon valve, type V.T.94, marked 10E/108 AM 63, (RMW/Y420A - McVitie Weston number), by Raytheon Manufacturing Company.