How do you test old style pcv ?

1966 273 Commando engine. Does anyone have the proper procedure for testing the older style pcv valve Like the one above? I could not find that on the 66’ FSM. I replaced mine and now all the sudden I’ve got major oil consumption and smoke on start up and decel. The valve inside seems looser than the factory one I changed for visual reasons. I gave the old one away trying to help out a friend in need.
The new one is from reputable dealer but I believe they are all over seas made.
Thanks in advance.