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Amazon.com: Horiznext Stainless Steel Compression Fitting, 1/2" Tube OD x 1/2 NPT Male Coupler ss tubing adapter : Industrial & Scientific
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Amazon.com: Horiznext Stainless Steel Compression Tube Fitting, Union, 5/16" Tube OD. Straight Adapter : Industrial & Scientific
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Legend Valve - 1-1/4″ Pipe, 1-1/2″ Copper Tube, Brass Compression Pipe Coupling - 36899219 - MSC Industrial Supply
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Amazon.com: Horiznext Stainless Steel Compression Tube Fitting, Union, 3/8" Tube OD Straight Adapter : Industrial & Scientific
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