McVitie Weston valve collection, MOV/ GEC valve, type V.T. No.31
MOV/ GEC valve, type V.T. No.31, marked 19, (RMW/E145 - McVitie Weston number), by M-O Valve Co. Limited; General Electric Company Limited.
MOV/ GEC valve, type V.T. No.31, marked 19, (RMW/E145 - McVitie Weston number), by M-O Valve Co. Limited; General Electric Company Limited.