1/2" MNPT x 3/4" FNPT Schedule 40 White PVC Threaded Reducing Adapter | U.S. Plastic Corp.
Amazon.com: FangKingNo 10pcs 3/4" to 1" PVC Reducing Female to Female Threaded Coupling for PVC PIPE Pressure Fittings ,PVC Reducer Female Adapter for PVC PIPE Connector White (1 Inch to 3/4 Inch) :
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1 1/2" x 1" PVC Schedule 80 Reducing Coupling (FPT x FPT) - The Drainage Products Store
uxcell PVC Pipe Fitting Hex Nipple G1-1/2 X G1-1/2 Male Thread Adapter Connector 2pcs - Amazon.com
Black PE Water Pipe Straight Reducing Coupling 20/25/32/40/50mm PE PVC Tube Fittings 1/2" 3/4" 1" 1.2" 1.5" Male Thread Adapter - AliExpress
1 1/2" x 1" PVC Reducing Bushing (spigot x FPT) — BascomMaple.com
FangKingNo 10pcs 1" male thread to 1/2" female thread Reducer Bushing PVC Pipe Fittings Male to Female Thread Adaptor Coupling for connecting pipe White (1''x1/2'', 10) - Amazon.com