1/4 inch Brass Flared Adapter OD Flare x Male

1/4 inch OD x 1/4 inch MPT Flared Adapter – Lead-Free Brass Transition Fitting

The 1/4 inch OD x 1/4 inch MPT Flared Adapter is a transition fitting used to join 1/4 inch outside diameter soft copper or aluminum tubing to a 1/4 inch male pipe thread connection. Constructed from lead-free brass, this adapter is suitable for potable water, low-pressure gas, and hydraulic systems where corrosion resistance and mechanical integrity are required.

Technical Specifications

• Material: Lead-Free Brass (compliant with NSF/ANSI 61 & 372)
• Tube Connection: 1/4 inch OD flared per SAE J512
• Threaded Connection: 1/4 inch MPT (Male Pipe Thread, ANSI/ASME B1.20.1)
• Pressure Rating: Typically rated up to 200–1200 PSI (depending on system type and installation quality)
• Operating Temperature: Up to 400°F with compatible tubing and sealing materials

Performance Characteristics

• ✅ Corrosion-Resistant – Brass construction provides reliable performance in water, air, fuel, and oil systems
• ✅ Mechanical Seal – Flared joint creates a metal-to-metal seal without the need for solder or heat
• ✅ Leak-Resistant – Precision-machined threads ensure tight, repeatable sealing with thread compound or PTFE tape

Installation Notes

Use flaring tool to properly form 45° flare on compatible 1/4 inch tubing. Align flare nut and fitting precisely to avoid damage to the sealing surface. Apply thread sealant to the MPT side as specified by project specifications or applicable code. Tighten fittings per manufacturer-recommended torque to ensure reliable sealing and prevent distortion.

Typical Applications

Commonly used in potable water distribution, ice maker lines, LP/natural gas systems (check local codes), pneumatic controls, and low-pressure hydraulic lines. Frequently found in equipment hook-ups and appliance installations requiring dissimilar connection types.

Material & Compliance

Lead-free brass is approved for use in drinking water systems and meets current U.S. federal and state lead content requirements under the Safe Drinking Water Act. It also resists dezincification, making it suitable for long-term exposure in a variety of fluid handling systems.

The 1/4 inch OD x 1/4 inch MPT Flared Adapter provides a code-compliant, corrosion-resistant solution for transitioning between copper tube and threaded pipe components in residential and commercial fluid systems. Engineered for secure metal-to-metal sealing, it supports both new construction and retrofit installations where durability and dimensional precision are required.