McVitie Weston valve collection, Hivac valve, type J240
- Made:
- London
- maker:
- Hivac Limited
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LicenseHivac valve, type J 240, (RMW/Y330 - McVitie Weston number)
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Hivac valve, type J240, (RMW/Y330 - McVitie Weston number), made by Hivac Limited, aka the High Vacuum Valve Company, London.
