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The IPEX 258400 is a compression fitting designed for use in plumbing systems where a reliable, leak-resistant mechanical connection is required. Compression fittings create a secure joint by compressing a ferrule or ring against tubing as the nut is tightened, eliminating the need for soldering or adhesives. Sold individually, this fitting is suited for licensed plumbers and experienced trade professionals working on supply line connections, shut-off valve installations, or similar plumbing assemblies. At 0.271 pounds, it is a lightweight component that integrates easily into both new construction and service-and-repair work.
This compression fitting is intended for plumbing applications in residential and light commercial settings. It is typically installed on water supply lines, fixture connections, or other low-pressure distribution piping where a compression-style joint is the preferred or required connection method. Installers working on under-sink supply connections, angle stops, or exposed supply risers will find this fitting applicable to those standard service scenarios.
Designed as an OEM-style compression fitting for use in residential and light commercial plumbing supply line applications.
Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and the International Plumbing Code (IPC). Shut off the water supply and relieve line pressure before beginning any work. Hand-tighten the compression nut first, then snug with a wrench - avoid overtightening, which can crack the ferrule or fitting body and cause leaks. Inspect the connection for leaks after restoring water pressure.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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