Amazon.com: (Pack of 2) EFIELD 3/4 Inch x 3/4 Male Adapter Push to Connect Pex Copper, CPVC, 3/4 Inch, with a Disconnect Tool : Industrial & Scientific
2 PIECES XFITTING 3/4" PEX X 3/4" CPVC COUPLING, TRANSITION COUPLING, BRASS PEX B CRIMP FITTINGS - BRASS - Amazon.com
Amazon.com: SharkBite 3/4 Inch x 1/2 Inch 90 Degree Reducing Elbow, Push to Connect Brass Plumbing Fitting, PEX Pipe, Copper, CPVC, PE-RT, HDPE, U274LFA : Everything Else
Apollo 3/4 in. Brass PEX-A Barb x 3/4 in. Schedule 40 PVC Straight Adapter EPXPVC34 - The Home Depot
SharkBite 3/4 Inch x 3/4 Inch 90 Degree Male Adapter Elbow, Push to Connect Brass Plumbing Fitting, PEX Pipe, Copper, CPVC, PE-RT, HDPE, U286LFA. - Amazon.com