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The ANDERSON METALS 754055-04 is a lead-free brass flared tube union designed to connect two flared tube ends in a single inline fitting. It accepts 1/4 inch tube OD on both ends with a 45-degree flare angle and uses a flare x flare end connection, creating a leak-resistant, pressure-rated joint without soldering or threading. Rated to 1400 psi for both dynamic and static working pressure, this union is built for applications where reliability under sustained load matters. Plumbers and HVAC technicians install this fitting in refrigerant, fuel gas, and potable water lines where lead-free construction is required by code.
This fitting is appropriate for residential and light commercial installations where a union connection is needed in a flared copper or compatible tube run. Common applications include refrigeration line sets, LP and natural gas supply tubing, and potable water systems subject to lead-free compliance requirements such as NSF or local plumbing codes. Its compact size makes it suitable for tight installations in mechanical rooms, under fixtures, and within equipment enclosures.
Designed as an OEM-style replacement or new-installation union fitting for 1/4 inch OD flared tube systems in refrigeration, fuel gas, and lead-free potable water applications.
Installation is performed by licensed plumbers or HVAC technicians. Shut off gas or water supply and relieve system pressure completely before disconnecting or installing any fitting. Use a proper flaring tool to prepare tube ends to the correct 45-degree flare profile before seating the fitting — an improperly flared tube is a leading cause of joint leaks. Tighten flare nuts with two wrenches to avoid twisting the tube, and pressure-test the completed joint before returning the system to service.
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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