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Charlotte Pipe 3/4 In. X 1/2 In. Sch. 40 Slip X Slip Reducing PVC Coupling - Farmers Building Supply
Carlon 3/4 in. x 1/2 in. PVC Reducer Bushing E950ED-CTN - The Home Depot
1-1/2" x 3/4" CPVC CTS Reducer Coupling Socket x Socket
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Charlotte Pipe 2 in. x 3/4 in. PVC Schedule 40 Reducer Bushing PVC021071275HD - The Home Depot
Amazon.com: White Reducer 3/4 Inch Spigot x 1/2 Inch FNPT Female Pipe Thread PVC Reducing Bushing SCH 40 PVC Pipe Reducer Adapter Fitting PVC Reducer Bushing : Industrial & Scientific