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The RWC U3523LFA is a chrome-plated, push-to-connect brass stop valve adapter designed for quick, tool-free connections in water supply applications. It features a 1/4-inch SharkBite (SB) inlet and a 3/8-inch outside diameter (OD) compression outlet. Constructed from one-piece DZR (dezincification-resistant) brass, it resists corrosion in high-mineral and aggressive water conditions. Rated for service up to 200 degrees F and 200 psi, this adapter is suitable for demanding residential and light commercial plumbing environments. Plumbers and skilled tradespeople install this fitting when connecting stop valves to supply lines without soldering or special tooling.
This adapter is compatible with copper, CTS (copper tube size), PEX (cross-linked polyethylene), and CPVC (chlorinated polyvinyl chloride) tubing, making it versatile across common supply line materials. Typical install scenarios include under-sink fixture connections, toilet supply risers, and any application requiring a transition from a SharkBite push-fit connection to a 3/8-inch OD compression stop valve. The fitting can be installed in concealed locations, including buried runs and behind drywall, without requiring access panels for ongoing maintenance.
Designed for use with copper, CTS, PEX, and CPVC tubing. Suitable as an OEM-style push-to-connect stop valve adapter in residential and light commercial plumbing systems where a 1/4-inch SharkBite connection transitions to a 3/8-inch OD compression stop valve.
Installation is performed by licensed plumbers or qualified tradespeople following local plumbing codes and IPC guidelines. Shut off the water supply and relieve line pressure before installing or removing the fitting. No solder, clamps, or special tooling are required for the push-to-connect end; ensure tubing is cut cleanly and squarely and inserted to full depth. To disconnect a SharkBite fitting, use the manufacturer-recommended disconnect clip or tool to avoid damaging the collet.
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