Re: Refixing loose valve bases
I've used epoxy (Araldite, not Araldite Rapid) to glue valve bases in the past, without problems. However, I'd prefer something with a little bit of compliance. My thoughts would be silicone, RTV with a neutral cure (not the acetic acid curing, bbath sealant stuff), thixotropic. RS and Farnell sell a decent selection.
Silicones stand high temperatures well. And they have a bit of 'give'. Even if used on a low-power valve, where temperature excursions, differing thermal expansion rates, don't 'bite' there is still the matter that phenolic bases do sometimes warp over time, especially in sunlight. It would be a shame if they tried to distort the glass at the same time... and won!
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