Not Ranked
The valve illustrated above was and is used in Drag Racing in an effort to crate a negative pressure (vacuum) in the crankcase by way of the valve cover breather caps to improve & assist with ring seal. I will not work nor is it intended to work with a PCV valve. Like a poor mans vacuum pump.
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Rick
As you slide down the Banister of Life, may the splinters never be pointing the wrong way 
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