Coupling Merchant Galv 1/8 Go to amazon.com Related posts The 16 best couplings 1/8 2022 FeatureChina DescriptionImport Galvanized Standard Merchant Coupling - Malleable galvanized iron pipe fittings. Straight tapped and suitable for steam, oil, or water lines with 150 lb. or less pressure. - Size: 1/8"