PEX-B 1″ X 1″ X 1″ PEX TEE. Apollo PEX Lead-Free dezincification-resistant brass tees are the premier low cost solution for connections within a PEX piping system. Apollo PEX fittings are suitable for both potable water and hydronic heating systems. Apollo PEX fittings may be used with copper crimp rings, stainless steel pinch clamps or stainless steel crimp sleeve (all sold separately). Available in a variety of configurations and sizes, completion of your next PEX piping system installation is easy with Apollo PEX fittings. Lead-free DZR brass. Barb connection. For use with PEX pipe. Max. service temperature 200F and max. pressure 200 psi. Compatible with crimp ring or clamp connections. Third party certified to NSF-pw Annex G. Complies with ASTM F877. Complies with ASTM F1807. CSA B137.5.