3/8 inch x 1/4 inch Brass Flared Reducing Adapter OD Flare x Male

Contractor-Grade 3/8 inch OD x 1/4 inch MPT Brass Flared Reducing Adapter – Engineered for Durable Transitions

The 3/8 inch OD x 1/4 inch MPT Brass Flared Reducing Adapter is designed for precision transitions between copper tubing and male pipe threads in high-integrity fluid conveyance systems. Engineered for strength and corrosion resistance, this fitting provides secure, vibration-resistant joints commonly required in fuel, gas, hydraulic, and air applications.

Application & Performance

This flared adapter is intended for use with soft copper, aluminum, or thermoplastic tubing and provides a metal-to-metal seal without requiring additional sealants. Its robust construction supports high-pressure systems and delivers long-term service in both residential and commercial settings.

Product Features

• ✅ Material: Forged or machined brass for superior corrosion resistance and mechanical strength.
• ✅ Tube Size: 3/8 inch outer diameter flare connection.
• ✅ Thread Size: 1/4 inch male NPT (National Pipe Taper) for compatibility with threaded iron, brass, or plastic pipe and fittings.
• ✅ Seal Type: Metal-to-metal flare seat; does not require thread tape or compound on flare end.
• ✅ Temperature Range: Typically up to 400°F (204°C), depending on application specifics.
• ✅ Working Pressure: Suitable for moderate- to high-pressure fluid and gas systems; dependent on tubing and installation method.

Installation Guidelines

Use standard flare nut wrenches to avoid distortion. Ensure mating surfaces are clean and properly aligned. Apply thread sealant only to the male pipe thread side if required by code or system conditions. Avoid overtightening, especially on the flared connection, to prevent deformation or cracks.

Common Use Cases

Frequently installed in gas lines, refrigeration systems, and hydraulic assemblies where reliable reductions between tubing and threaded pipe are required. Suitable for HVAC service, compressed air systems, and certain potable water applications where brass is approved under local code.

Compliance and Standards

• ✔ Meets ANSI B1.20.1 for NPT thread engagement.
• ✔ Manufactured in accordance with SAE J512 for flare fittings.
• ✔ Lead-free versions available in compliance with NSF/ANSI 61 and 372 for potable water use.