1/2 PEX x 3/4 PEX Elbow, For PEX Or Polybutylene, On 3/4" Polybutylene You Must Use A #26790 Adapter.
1x3/4 Poly MIP Adapter
1/2Px3/4MPT ADAPTER
1/2Px1/2FPT SWIVEL COUPLING
1/2Px1/2MPT ELBOW