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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: Re: Valvo E88CC/6922 question. posted by cbes on January 10, 2004 at 10:59:18:
Actually,the 'red series' stamping was applied from the late 1950ies to about 1965/66 for industrial grade valves produced by Philips (Heerlen, Sittard, Valvo Hamburg, OEM) - after that the stamping was changed to white again.
The colour of the stamping is no indicator for the quality ov the Valvos - if there is any at all, then it is the decyphered two line etched batch code near the bottom of the valve.
If the second line beginds with a D, then it is a Valvo Hamburg valve.
More likely it is to begin with a DELTA for Philips Heerlen factory.Both is fine.
Regards,
---mb---
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Follow Ups
- Valvo Red Series E88CC vs. white label - mb-de 06:44:44 01/12/04 (5)
- Re: Valvo Red Series E88CC vs. white label - cbes 08:53:04 01/12/04 (4)
- The colour code was only used for a limited period of time... - mb-de 03:13:17 01/13/04 (1)
- Re: The colour code was only used for a limited period of time... - cbes 16:41:05 01/14/04 (0)
- Specs might be more technical than I'd find useful. - Sigmund 09:19:23 01/12/04 (1)
- Some specs do help but not all - cbes 09:49:49 01/12/04 (0)
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