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The LEGEND VALVE 312-004nl is a no-lead bronze insert x male NPT (MNPT) adapter designed for joining insert-type tubing to threaded pipe systems. At 0.75 inches, this fitting bridges barbed or insert connections to male NPT threads in potable water, hydronic, and general plumbing distribution lines. The no-lead bronze construction meets regulatory requirements for use in drinking water systems. Plumbers and pipefitters install this adapter in residential and light commercial applications where a secure, corrosion-resistant transition between insert tubing and threaded fittings is required.
This adapter is suited for residential and light commercial plumbing systems where flexible tubing such as PEX or polyethylene connects to threaded copper, brass, or iron pipe assemblies. It is commonly installed at manifold connections, shut-off valve transitions, and equipment supply lines. The 0.75 inches size fits standard three-quarter-inch insert and MNPT configurations found throughout residential water supply and hydronic heating installations.
Designed as an OEM-style replacement or new-installation fitting for 0.75 inches insert-to-male-NPT transitions in residential and light commercial potable water and hydronic plumbing systems.
Installation should be performed by a licensed plumber in accordance with local plumbing codes and IPC guidelines. Shut off the water supply and relieve system pressure before beginning work. Apply PTFE tape or an approved pipe thread sealant to the male NPT threads before making up the connection. Do not overtighten the threaded connection, as bronze fittings can be damaged by excessive torque.
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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