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The ANDERSON METALS 754048-0406 is a lead-free brass flared tube connector designed to join 1/4-inch OD tubing to a 3/8-inch male NPT threaded port using a 45-degree flare seat. The fitting uses a flare x MNPT end configuration, making it a standard choice for connecting copper or compatible tubing runs to threaded fittings, valves, or equipment ports. Rated for up to 1000 psi working pressure in both static and dynamic service, this connector suits demanding fluid and gas distribution systems. Licensed plumbers and HVAC technicians install this type of fitting as part of refrigerant, fuel gas, or potable water piping assemblies where lead-free materials are required by code.
This connector is suited for residential and light commercial plumbing, HVAC, and gas distribution applications where a 45-degree flare connection transitions to a male NPT thread. It is commonly used in fuel gas lines, refrigerant tubing connections, and water supply systems requiring lead-free brass fittings. The NPT thread complies with standard pipe thread specifications widely used across North American plumbing and mechanical systems.
Designed as an OEM-style replacement or new-installation fitting for systems using 1/4-inch OD flared tubing with 3/8-inch male NPT threaded connections in plumbing, HVAC, or gas distribution assemblies.
Installation should be performed by a licensed plumber or HVAC technician in accordance with applicable local codes, the International Plumbing Code, or the International Fuel Gas Code. Shut off and depressurize the system completely before removing or installing any flare fitting. Use a properly sized flaring tool to prepare the tubing end to a consistent 45-degree seat before tightening the fitting. Do not overtighten, as over-torquing brass flare fittings can damage the seat and cause leaks.
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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