Charlotte Pipe 2 in. x 1-1/2 in. PVC Schedule 40 MPT x S Male Reducer Adapter PVC021101600HD - The Home Depot
Threaded Reducing Bushing - 2" Male NPT to 1.5" Female NPT SCH 80 PVC (160-A-939-2-1.5)
Charlotte Pipe 1-1/2 in. PVC Schedule 40 MPT x S Male Adapter PVC021091400HD - The Home Depot
1-1/2" x 1" Sch 40 PVC Reducer Coupling Soc 429-211
Charlotte Pipe 2 in. x 1-1/2 in. PVC Schedule 40 MPT x S Male Reducer Adapter PVC021101600HD - The Home Depot
Lasco 1.5 inch Coupling - FPT x FPT - Par West Turf
Value Collection - 2″ PVC Plastic Pipe Male Adapter - 36999399 - MSC Industrial Supply
1-1/2" PVC Male Pipe Adapter | MPT x Slip Adaptor Pipe Fitting
Amazon.com: FangKingNo5pcs 1.5Inch White PVC Pipe Coupling Adapter Pipe Fittings couplers (Slip to Slip) Schedule 40 Easy to Install,and High Tensile for Home or Industrial Use ( Pack of 5) (1 1/2") :
Amazon.com: 2Pcs 1-1/2" PVC Union Coupling Pipe Fitting (Socket x Socket) 1.5Inch PVC Slip Union PVC Adapter Coupling Schedule 40, EPDM O-Ring, White : Industrial & Scientific