Spyder,
I don't know because I didn't take the old one apart. I chucked it. Pushing 225,000, I'm resigned to the fact that its going to need new parts. I couldn't blow through any of the pipes on the new valve. I could blow through all of them on the old one. Fails open I guess.

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2009 E320 Bluetec 117,000
1995 E300D 306,000 Sold
1996 Ford Taurus LX 130,000 Sold
1985 300TD Still 225,000 Sold
2016 Ford Fusion 24,900