PCV Valve Problem

Any one know what the internals of the PCV valve consist of? I am redoing a 1960 CJ5 with a F-134 motor. From what I've read, when I remove the vacuum-line from the oil fill tube, I should feel a slight suction on the nipple off the oil fill tube at idle... I have slight "positive" airflow back to the air-filter. When I took the PCV valve off the side valve cover and took it apart all I found inside was a large ball-bearing. Is this normal ??? Also have a white "Froth" showing up on the top of the dip stick. Engine is a fresh rebuild with about 1,000 miles on it and runs great. But the fact that I have pressure going back through the the air filter instead of suction bugs me. Any thoughts??
Thanks!

 

I have seen steel ball or a cone shape steel plug but alway a spring in them. should rattle when shaken

 

Thanks cookieman! Do you remember if the spring was on the side going back to the valve cover or towards the intake manifold and was it a "light "spring?
Thanks again for the help.

 

don't remember off hand but let me look around if find one to take apart. but they are cheap at part store. Someone here should know.

 

I haven't taken them apart but I'm pretty sure it's a check valve. Let's the positive pressure out of the crankcase so it can make it's way to the intake manifold. So if it's a ball check, and the spring is in compression. the spring would be on the intake side of the ball. HTH

 

Thanks guy's. Any and all info is helpful. Cookieman, got your message. Sounds like the way to go. Thanks, Irish.