Schedule 40 PVC Pipe Fipt x Fipt x Fipt Tee Fitting (1 1/2" Dia.) - 405-015, If all three of the pipes you are connecting have threads on the end, you will
LASCO 1-in x 1-in 90-Degree Tee PVC Tee in the PVC Pipe & Fittings department at Lowes.com
NIBCO 1-1/2 in. PVC DWV All Hub Sanitary Tee Fitting C4811HD112 - The Home Depot
NIBCO® Socket PVC Tee at Menards®
PVC Tee Connector 3-Way Water Pipe Fitting 2-Socket Solvent Weld x Female Thread | eBay