I purchased a PCV valve sold as P/N 5647228, CV-469C a while back. It came in a silver and orange foil package. The valve was black with PAT. 32633699 stamped on it. Both ends were a correct fit, the air flow direction is correct and it has a similar spring-loaded plunger as the original AC 1544935 valve I have. The main difference is the 1544935 has a hole through the center of the cone shaped spring-loaded plunger. Air will moves in both directions; the volume of air will be varied by the movement of the cone. Perhaps PCV technology improved the design of the replacement valve.
