Gritpat,
Attached on the photos of the badly rusted flange faces of L-420-ESDV-0252. One side had received preservation but judging from the pitting it was already badly rusted. This was the top of the valve as it sat in the box. The bottom side received no preservation and as a result will need to have the flange face lapped to remove the pitting. There is one other valve found like this and I suspect we will find more as we go through them.