3/8 inch Brass Flared Adapter OD Flare x Male

48-6-6WN Brass Flare x MPT Adapter – 3/8" OD Flare x 3/8" Male Pipe Thread

The 48-6-6WN Brass Flared Adapter provides a secure, metal-to-metal seal in gas, fuel, oil, air, and hydraulic applications. Designed to connect a 3/8" outer diameter flared tube to a 3/8" male NPT threaded fitting, this adapter delivers robust performance where precision and durability are essential.

Manufactured from lead-free brass, this fitting meets federal and state low-lead requirements for potable water systems and maintains strength and corrosion resistance in high-temperature and high-pressure environments. The flare connection accommodates flexible copper tubing, while the NPT thread interfaces with standard pipe systems, creating a reliable transition between tubing and threaded connections.

Performance Features

• ✅ Metal-to-Metal Flare Seal: No gasket or O-ring required; designed to withstand vibration and pressure without leaking.
• ✅ Dual Connection Type: 3/8" OD flare (tube side) and 3/8" NPT male (pipe side) for cross-system compatibility.
• ✅ Lead-Free Brass: Complies with ANSI/NSF 61 and federal Safe Drinking Water Act (SDWA) standards.
• ✅ High Temperature/Pressure Tolerance: Suitable for systems with exposure to elevated heat or line pressure.
• ✅ Compact Design: Ideal for installations in limited-space configurations without sacrificing reliability.

Technical Specifications

• Tube End: 3/8" OD Flare (45°)
• Thread End: 3/8" MPT (National Pipe Taper)
• Material: Lead-free forged brass
• Temperature Range: -65°F to 250°F (-54°C to 121°C)
• Working Pressure: Up to 2000 psi depending on tubing and installation

Installation Notes

Install using a flaring tool for the tube end and apply an approved thread sealant or PTFE tape on the male pipe threads. Avoid overtightening to prevent cracking or thread damage. This fitting does not require soldering and can be serviced without disassembly of the entire system.

Common Applications

Used extensively in fuel gas systems, refrigeration lines, hydraulic assemblies, and water supply connections to appliances. The 48-6-6WN is especially useful where vibration resistance is needed, such as near compressors, heaters, or pumps.

Material Note

Brass offers excellent machinability, corrosion resistance, and thermal conductivity. Its resistance to dezincification makes it suitable for both residential and light commercial applications.

The 48-6-6WN Brass Flared Adapter meets the mechanical and safety requirements for mission-critical installations in plumbing and HVAC systems. Engineered to perform, this fitting supports secure, code-compliant pipe-to-tube transitions in challenging service conditions.