Schedule 40 Gray PVC Reducing Teems (soc x ft) are meant to split flow of a piping system at 90 degrees and also keep its initial direction of flow. The new branch is not only a smaller diameter, it is also a female NPT connection. All ends of this fittings are socket style openings.
All of our schedule 40 fittings conform to ASTM D1785
NSF 14, CSA B137.0/B137.3