McVitie Weston valve collection, MOV/GEC valve, type VT No. 28
MOV/GEC valve, type VT No. 28, marked 683, (RMW/E138A - McVitie Weston number), by M-O Valve Co. Limited; General Electric Company Limited.
MOV/GEC valve, type VT No. 28, marked 683, (RMW/E138A - McVitie Weston number), by M-O Valve Co. Limited; General Electric Company Limited.