1.5" X 1" Sch 80 PVC Bell Reducer Coupling (Socket x Socket)
Amazon.com: Boltigen 2pcs 1-1/2 PVC Pool Pump Fitting Coupling, 1.5" NPT Male x 1.5" Slip Union Socket Joint Adapter Connector Replacement for Pool Spa Pump : Patio, Lawn & Garden
Charlotte Pipe & Foundry PVC021001400 PVC Coupling 1.5 in. SXS Schedule 40 - pack of 25 - Walmart.com
1.5" X 1" Sch 80 PVC Bell Reducer Coupling (Socket x Socket)
Lasco Fittings 482-015 1.5"S SCH40 PVC Deep Socket Coupling
1.5" PVC Univ. Tee SP Coupler
Amazon.com: Boltigen 1-1/2 PVC Pool Pump Fitting Coupling, 1.5" NPT Male x 1.5" Slip Union Socket Joint Adapter Connector Replacement for Pool Spa Pump : Patio, Lawn & Garden
Hot Tub PVC Pipe Inside Connector 1.5" – SpaDepot.com
Lasco 1.5 inch Coupling - FPT x FPT - Par West Turf
Charlotte Pipe 1-1/2-in Schedule 40 PVC Coupling in the PVC Pipe & Fittings department at Lowes.com