![](https://coimages.sciencemuseumgroup.org.uk/58/890/large_thumbnail_1991_0166.jpg)
McVitie Weston valve collection, Philco valve, type 71A
- maker:
- Philco Corporation
![Philco valve, type 71A, black and yellow printed label](https://coimages.sciencemuseumgroup.org.uk/453/387/medium_smg00262774.jpg)
Philco valve, type 71A, black and yellow printed label, (RMW/D149 - McVitie Weston number), by Philco Corporation.
Philco valve, type 71A, black and yellow printed label, (RMW/D149 - McVitie Weston number), by Philco Corporation.