Amazon.com: 20PACK 3/4 Inch Female PVC Pipe End Cap 3/4 Inch Female Threaded Plug Adapter, SCH 40 PVC Pipe threaded Cap Fitting 3/4" PVC Pipe Female Plug Socket for Plumbing Water Line,
1" Schedule 80 Gray PVC MIPT x Socket Male Adapter | U.S. Plastic Corp.
Mixed nipple, diameter 32 or 40 mm, thread 1" 1/4 to screw PN 16 - PVC connection
Charlotte Pipe 1-1/2 in. PVC Schedule 40 MPT x S Male Adapter PVC021091400HD - The Home Depot