Orbit 3/4 in. PVC-Lock Coupling 37776 - The Home Depot
PVC Pipe Reducer Fitting - 3/4 Inch MNPT Male Pipe Thread x 1/2 Inch Slip
Amazon.com: 3/4 PVC Tee Pipe Fitting Sch 40-3/4 Inch Socket x 3/4 Inch FNPT x 3/4 Inch Socket PVC Tee - PVC Tee 3/4 Inch for Plumbing - PVC Pipe Connectors - PVC Pipe Fittings : Industrial & Scientific
3/4 in x 3/4 in Fitting Pipe Size, Schedule 40, Coupling - 22FJ52|430007 - Grainger
3/4" 5-Way PVC Furniture Fitting - Side Outlet Cross