Cerrobrass U1-4C Brass Flared Tube Connector 1/4 in Od

Product Description

The CERROBRASS U1-4C is a brass flared tube connector designed for use in refrigeration, HVAC, and plumbing systems where a secure, leak-resistant flare connection is required. It features a 45-degree flare on one end and a male iron pipe (MIP) thread on the other, connecting 1/4-inch OD tubing to a 3/8-inch threaded fitting. Constructed from brass, this connector is rated for a maximum working temperature of 250 degrees F. It meets ASA, ASME, and SAE standards, making it appropriate for professional trade installations requiring code-compliant fittings.

This connector is used in residential and light commercial HVAC systems, refrigeration lines, and plumbing applications where soft copper or aluminum tubing must transition to a threaded pipe connection. The flare-by-MIP end configuration makes it a common choice for refrigerant line sets, fuel gas lines, and similar pressure-carrying systems. It is sold individually and is suited for service and repair work as well as new installation.

Key Features

• 45-degree flare angle provides a reliable, vibration-resistant seal on 1/4-inch OD tubing
• Flare x MIP end connection transitions copper or aluminum tubing to male threaded fittings
• Brass construction offers corrosion resistance and durability in wet or humid environments
• Rated to 250 degrees F maximum working temperature
• Meets ASA, ASME, and SAE standards for professional and code-compliant installations
• Compact, single-piece design with no additional components required

Compatibility

Designed as an OEM-style replacement or new-installation fitting for systems using 1/4-inch OD flared tubing with a 3/8-inch male iron pipe thread connection, typical in residential and light commercial HVAC, refrigeration, and plumbing applications.

Installation Notes

Installation should be performed by a licensed HVAC technician or plumber. Shut off system pressure and recover any refrigerant or depressurize the line before disassembling existing fittings. Use a calibrated flaring tool to produce a clean, properly seated 45-degree flare before tightening the connector. Do not over-tighten threaded connections, and follow applicable ASA, ASME, and local plumbing or mechanical codes for torque and sealant requirements.