Too bad that site's down. It really was a nice article. Oh well, Google is your friend.
I did find a nice spin on it though,
here.
From what I remember though...
In this design, the top fiting connects to the hose leading to the valve cover and the fitting in the middle connects to the hose leading to the PCV Valve. The fitting on the bottom is a drain. The body of the seperator is made out of 2" PVC pipe, cut about 4 or 5 inches long (IIRC). The top on bottom of the body is 2" PVC caps. The inside of the body is stuffed with 2 or 3 plastic scrubing pads like this
I don't remember what the size's are of the fittings though. Sorry.
