McVitie Weston valve collection, MOV/GEC valve, type AT40X
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MOV/GEC valve, type AT40X, marked 2687, pinch marked 7654
Science Museum Group
© The Board of Trustees of the Science Museum
MOV/GEC valve, type AT40X, marked 2687, pinch marked 7654, evacuating pip broken, (RMW/J98 - McVitie Weston number), by M-O Valve Co. Limited; General Electric Company Limited.
