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Reply to "VARNISH (STEAM TURBINES)"

I'm not sure what you call varnish, but one of our EHC systems had brown deposits in it that looked exactly like the same kind of deposits that was in my combustion unit's pencil filters. I have pictures of one of the servo valves and it looks like varnish. I still have one of the servo valves on my desk and can send it off for analysis. What tests would indicate that this is varnish or not?

I hope that your EHC unit doesn't leak as badly as your other units.
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