1/2 inch x 1/4 inch Brass Flared Reducing Adapter OD Flare x Male

1/2 inch OD x 1/4 inch MPT Brass Flared Adapter – Machined Fitting for Tube-to-Pipe Transitions

The 1/2 inch OD x 1/4 inch MPT Brass Flared Adapter is a precision-machined fitting designed for connecting flared copper tubing to male pipe thread (MPT) connections in low- to moderate-pressure applications. Commonly used in fuel, gas, oil, and water distribution systems, this adapter supports reliable mechanical sealing without the need for soldering or welding.

Constructed from solid brass, the fitting offers high resistance to corrosion, dezincification, and mechanical wear, making it suitable for both indoor and outdoor installations in accordance with applicable plumbing and mechanical codes.

Product Features

• ✅ Connection Size: 1/2 inch OD flared tubing x 1/4 inch MPT
• ✅ Material: Forged or machined brass, meeting ASTM B16 or equivalent specifications
• ✅ End Types: 45° flare connection (tube side) x male pipe thread (MPT)
• ✅ Application: Suitable for gas lines, fuel systems, HVAC, refrigeration, and potable water systems (non-leaded brass variants)
• ✅ Operating Range: Supports standard pressure and temperature ranges for copper-tube-compatible systems

Installation Notes

Ensure the tubing end is properly flared to 45° and free of burrs before assembly. Tighten the nut to compress the flare onto the adapter face to form a metal-to-metal seal. For the MPT connection, apply a suitable thread sealant or PTFE tape where permitted. Avoid over-torquing to prevent distortion of the flare or damage to the pipe threads.

Common Applications

This adapter is frequently used to transition from 1/2 inch flared copper tubing to 1/4 inch threaded fittings in gas appliances, refrigeration equipment, hydraulic systems, and low-pressure fuel assemblies. Its compact size and durable construction support installation in confined spaces and service panels.

Material Performance

Brass is chosen for its thermal stability, corrosion resistance, and machinability. In flare fittings, it maintains a leak-resistant seal without degradation over repeated assembly and disassembly cycles. For potable water use, confirm compliance with lead-free requirements under NSF/ANSI 61 or 372 where applicable.

The 1/2 inch OD x 1/4 inch MPT Brass Flared Adapter offers dependable performance in transition connections between flared copper tubing and NPT-threaded components. It is a standard choice for mechanical contractors seeking precision, repeatability, and long service life in fluid system installations.