There has been some leaps and bounds in crankcase breather systems.
This valve is certainly one of them.
As they say, the last PCV valve you will buy.
Coupled with a Moroso or Stef's air/
oil separator would be a good system.
The more time the engine can run with a slight to significant negative pressure, (less than atmospheric) in the crankcase, the less acid buildup in the
oil, the
oil lasts longer, the less chance for oil leaks etc.