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Dixon Valve BSM44 Brass Fitting, Connector, 1/2" NPTF Male x 1/2" NPSM Male: Industrial Hose Fittings: Amazon.com: Industrial & Scientific
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Southland 1 in. x 1/2 in. Galvanized Malleable Iron FPT x FPT Reducing Coupling Fitting 511-353HN - The Home Depot
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Parker - Brass Flared Tube Short Nut: 5/8 x 1/2" Tube OD, 7/8-14 Thread, 45 ° Flared Angle - 62249701 - MSC Industrial Supply
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Thomas & Betts - Conduit Coupling: For EMT, Die Cast Zinc, 1/2″ Trade Size - 00155234 - MSC Industrial Supply
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