McVitie Weston valve collection, MOV/GEC valve, type N.R. 7X
MOV/GEC valve, type N.R. 7X, serial no. 7C, (RMW/B82 - McVitie Weston number), by M-O Valve Co. Limited; General Electric Company Limited.
MOV/GEC valve, type N.R. 7X, serial no. 7C, (RMW/B82 - McVitie Weston number), by M-O Valve Co. Limited; General Electric Company Limited.