Sioux Chief 3/8" Female Compression x 1/4" OD Reducing Adapter

Sioux Chief 3/8" Female Compression x 1/4" OD Reducing Adapter

The Sioux Chief 3/8" Female Compression x 1/4" OD Reducing Adapter is a rough-in plumbing fitting built to transition a 3/8" female compression connection down to 1/4" OD tubing. It is designed for installers who need to step a supply stop, angle stop, or shutoff valve outlet down to the smaller 1/4" OD line commonly used for ice makers, water filters, and other point-of-use supply connections. As a compression-style fitting, it installs with standard compression tools and does not require soldering, making it a practical choice for tight cabinet and wall spaces during new construction or retrofit work. Keep one on the truck any time a supply stop's 3/8" female compression outlet needs to feed a 1/4" OD line.

Key Features

• Trade Size: 3/8" female compression inlet x 1/4" OD compression outlet, sized to reduce from a standard supply stop outlet down to 1/4" OD tubing.
• Reducing Adapter Configuration: Connects a 3/8" female compression fitting directly to 1/4" OD tubing without requiring an intermediate coupling or extra union.
• Compression Connection: Tool-installed compression joint on the outlet side gives a secure, gasket-sealed connection to 1/4" OD tubing without soldering or solvent welding.
• Space-Saving Design: Compact, low-profile body suited to behind-the-wall and under-fixture rough-in areas where clearance is limited.
• Rough-In Compatibility: Mates with common supply stop, angle stop, and shutoff valve outlets finished in 3/8" female compression thread.
• Tool Installation: Installs and services with standard compression fitting tools, no torch or solvent cement needed on the job site.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Angle stop and supply stop outlet reductions to 1/4" OD lines
• Ice-maker and refrigerator water supply line connections
• Under-sink and under-fixture supply line rough-in
• Compression-to-compression size transitions in cabinets and tight wall cavities
• Renovation and retrofit supply line work where line size must be stepped down
• Point-of-use filter and dispenser supply connections fed from a 3/8" stop

Why Sioux Chief?

Sioux Chief manufactures rough-in plumbing hardware for professional installers, and this 3/8" female compression x 1/4" OD reducing adapter is built for dependable supply line connections behind the wall or under the fixture. Choosing a purpose-built reducing adapter over improvised fittings helps keep compression joints properly seated and leak-resistant across supply stop and ice-maker installations. Stock the Sioux Chief adapter alongside your other rough-in supply and connector inventory for consistent results on every job.