Thread: UY41 Valve.
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Old 22nd Oct 2019, 9:22 pm   #10
Synchrodyne
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Join Date: Jan 2009
Location: Papamoa Beach, Bay of Plenty, New Zealand
Posts: 2,943
Default Re: UY41 Valve.

I think that the information provided at this pair of sites shows (and explains why) that as originally designed, the UY41 and UY42 were significantly different, with the UY42 having much lower internal resistance.

Reconciling the different characteristics of the UY41 and UY42 in a single valve – if indeed it were done - does not look as if it would have been at all an easy task. I’d say that absent hard evidence that the combination was done, the safest assumption is that the UY41 and UY42 remained different until the end. That does not preclude interchangeability for some applications, but that was probably situation-specific.



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