McVitie Weston valve collection, Raytheon valve, type RX-235
Raytheon valve, type RX-235, numbered F0164, (RMW/Y559A - McVitie Weston number), by Raytheon Manufacturing Company.
Raytheon valve, type RX-235, numbered F0164, (RMW/Y559A - McVitie Weston number), by Raytheon Manufacturing Company.