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The ANDERSON METALS 750066-0404 is a straight compression tube connector designed to join tubing to a female NPT-threaded port. Constructed from lead free brass, this fitting creates a leak-resistant mechanical connection without soldering or flaring. It transitions between a compression-style tube end and a 1/4 inch FNPT threaded port, making it a reliable choice for plumbing, HVAC, and pneumatic line work. The fitting is rated to 3000 psi maximum working pressure, suitable for high-pressure service applications. Licensed plumbers and HVAC technicians use this type of connector when routing copper or compatible soft tubing into threaded fittings on equipment or distribution manifolds.
This connector is appropriate for residential and light commercial applications involving compressed air lines, refrigerant-adjacent tubing runs, water supply connections, and instrumentation plumbing. The 1/4 inch NPT thread size is one of the most common in trade work, fitting a wide range of valves, manifolds, gauges, and equipment ports. The compression end accepts tubing without soldering, which speeds up installation and simplifies future service access.
Designed as an OEM-style replacement or new-installation fitting for systems using 1/4 inch NPT female-threaded ports with compression tube connections in plumbing, HVAC, and pneumatic applications.
This fitting is installed by licensed plumbers or qualified HVAC technicians. Shut off the water supply or depressurize the pneumatic or fluid line before beginning work. Ensure the tubing end is cut square and deburred before inserting into the compression fitting to achieve a proper seal. Follow applicable local plumbing codes and IFGC or IPC guidelines for fitting selection and pressure ratings. Do not overtighten, as brass compression fittings can crack if excessive torque is applied.
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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