1-1/2" x 3/4" Sch 40 PVC Reducer Coupling Soc 429-210
PVC Tube Fitting Sleeve Connector EU to UK Adaptor Pipe Conversion Reduction | eBay
Appli Parts Brass 1/4 inch Compression Fitting reduction coupling for in line water filter with Male 3/8 inch NPT connection for Copper or PVC tubing APWF-100BC
LASCO 1-1/2-in x 1-in Schedule 40 PVC Reducing Bushing at Lowes.com
KLIMA | Réduction pour tube PVC rigide diam.20-16mm