![](https://coimages.sciencemuseumgroup.org.uk/58/890/large_thumbnail_1991_0166.jpg)
McVitie Weston valve collection, MOV/GEC valve, type V.T. 5B
![MOV/GEC valve, type V.T](https://coimages.sciencemuseumgroup.org.uk/483/986/medium_smg00261098.jpg)
MOV/GEC valve, type V.T. 5B, double-ended glass valve, 13in long overall, Serial No. 348, pinch marked 881, anode marked 480, glass filament tubes broken, (RMW/J59A - McVitie Weston number), by M-O Valve Co. Limited; General Electric Company Limited.