McVitie Weston valve collection, MOV/GEC valve, type V.T. No.4
MOV/GEC valve, type V.T. No.4, marked 6, (RMW/E126 - McVitie Weston number), by M-O Valve Co. Limited; General Electric Company Limited.
MOV/GEC valve, type V.T. No.4, marked 6, (RMW/E126 - McVitie Weston number), by M-O Valve Co. Limited; General Electric Company Limited.