Reliance Worldwide U066LF 1/4 X 1/2 Inch Fip Push-fit Adapter

Product Description

The RELIANCE WORLDWIDE U066LF is a quarter-turn push-fit adapter designed to transition between a 0.25-inch supply line and a 0.5-inch female iron pipe (FIP) threaded connection. This compact brass fitting is used in residential and light commercial plumbing systems where a quick, tool-free connection is needed between copper, CPVC, or PEX tubing and a threaded FIP port. Weighing just 0.17 pounds, it installs without soldering, crimping, or compression tools. Licensed plumbers and experienced service techs commonly install this fitting during fixture connections, angle stop replacements, and supply line repairs.

This adapter is suited for residential plumbing applications including toilet supply, faucet supply, and under-sink water distribution connections. The push-fit end accepts standard tubing for a fast, secure seal, while the FIP threaded end mates with standard half-inch female iron pipe threaded ports found on shutoff valves, faucet bodies, and supply manifolds. It is appropriate for use in tight spaces where a low-profile connection is preferred over traditional sweat or compression fittings.

Key Features

• Push-fit design allows tool-free connection to compatible tubing
• Quarter-turn mechanism provides a fast, reliable seal
• 0.25-inch push-fit inlet to 0.5-inch FIP threaded outlet
• Lightweight at 0.17 pounds for easy handling in confined spaces
• Lead-free (LF) construction meets potable water safety requirements

Compatibility

Designed as an OEM-style replacement and general-use push-fit adapter for residential and light commercial plumbing systems with 0.25-inch supply tubing and 0.5-inch FIP threaded ports.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and IPC guidelines. Shut off the water supply and relieve line pressure before beginning work. Ensure tubing is cut square and deburred before inserting into the push-fit end to achieve a proper seal. Do not overtighten the FIP threaded connection; use thread sealant tape on the threaded end as required by local code.

Technical Specifications

• Inlet Size: 0.25 inches (push-fit)
• Outlet Size: 0.5 inches FIP
• Weight: 0.17 pounds
• Lead-Free: Yes
• UPC: 697285606951

Standard Information

• Brand: RELIANCE WORLDWIDE
• Manufacturer Part Number: U066LF