Apollo 1/2 in. Brass PEX-B Barb Coupling (10-Pack) APXC121210PK - The Home Depot
Apollo Expansion Pex 1 in. Poly-Alloy PEX-A Expansion Barb Coupling (10-Pack), 10PK EPXPAC1110PK | Zoro
AY McDonald 3/4" Mac-Pak CTS x PVC Coupling (Comp. x Comp.) - The Drainage Products Store
pushfit - How to connect 1" PVC pipe to 1" push fitting - Home Improvement Stack Exchange
Connecting PEX to Copper and PVC Pipes - Bob Vila
Connecting PVC to PEX and Copper - YouTube
SharkBite 3/4 Inch x 1/2 Inch Outlet 4 Port Closed Multi-Port Tee, Push to Connect Brass Plumbing Fittings, PEX Pipe, Copper, PVC, 25555LF - Amazon.com