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The RWC U009LF is a push-fit reducing coupling designed to join pipes of two different nominal diameters — 3/8 inch and 1/2 inch — without soldering, crimping, or threaded fittings. The brass body provides corrosion resistance suitable for potable water systems, and the push-fit end style allows tool-free connections in tight spaces. This fitting is commonly installed by licensed plumbers on residential and light commercial water supply lines where a quick, reliable reducer is needed. The lead-free brass construction meets modern plumbing code requirements for potable water contact.
This reducing coupling is used in water supply piping applications where a transition between 3/8 inch and 1/2 inch lines is required. Typical scenarios include connecting supply risers to fixture shutoff valves, transitioning between differently sized copper, CPVC, or PEX lines, and making repairs where a size change is needed mid-run. The push-fit mechanism allows the fitting to be installed without heat, solvent cement, or specialty tools, making it practical for both new construction and retrofit work.
Designed as an OEM-style push-fit replacement or new-installation fitting for 3/8 inch by 1/2 inch nominal residential and light commercial water supply piping systems.
Installation is performed by a licensed plumber in accordance with local plumbing codes and the IPC. Shut off the water supply and depressurize the line before cutting and fitting. Ensure pipe ends are cut square, deburred, and clean before inserting into the push-fit connection. Do not exceed the fitting's rated working pressure or temperature as specified by the manufacturer.
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