Faucet Supply Lines

Measure the distance from the shutoff valve to the faucet connection and choose a supply line slightly longer than that distance; common connection sizes are 1/2-inch and 3/8-inch compression fittings for faucets and valves—confirm the threads on both ends before buying

Look for braided stainless steel or reinforced polymer with corrosion-resistant fittings (brass or nickel-plated); compression fittings and crimped ends reduce leak risk, and braided stainless resists kinking and abrasion better than plain rubber

Check for NSF/ANSI 61 or similar potable-water certification and compliance with local plumbing codes; some lines also list working pressure and temperature ratings—choose one rated for typical household water pressure and hot-water temperatures

Most installations are DIY-friendly: you typically need an adjustable wrench or two, plumber’s tape for threaded connections, and a rag to catch drips; always shut off the water, depressurize the line, and test for leaks after installation

Supply lines commonly last 5–15 years depending on material and water quality; inspect periodically for corrosion, kinks, bulging, or leaks, and replace immediately if any damage is found rather than attempting repair

Leaks are often caused by loose fittings, damaged washers, cross-threading, or degraded hose material; ensure proper thread engagement, avoid over-tightening, replace worn washers, and choose kink-resistant braided lines to reduce risk

Faucet supply lines are available across price tiers; budget options often cost under $30 and may use simpler materials, while higher-priced lines (and the category average is around $80) generally offer heavier-duty braided construction, better fittings, and longer warranties