Master Plumber® repair plumbing part - 367C - Compression fitting - Female reducing adapter
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Sioux Chief 1/2 inch x 3/8 inch Brass Female Compression x Compression Adapter
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1492-6C - Male Connector 3/8 Tube x 3/8 NPT w/o Spring - Brass DOT Reusable Air Brake Fittings
The Plumber's Choice 1/2 in. Brass Push to Connect Push x Female Adapter, for PEX, Copper and CPVC Piping 12UPFC - The Home Depot
Sioux Chief 7/8-in Brass Plumbing Coupling 907-123001
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