1-1/4 inch Brass AutoFlare Gas Coupling

1-1/4" Brass AutoFlare Coupling for CSST Gas Systems

The 1-1/4" Brass AutoFlare Coupling is designed for secure joining of corrugated stainless steel tubing (CSST) in gas distribution applications. This fitting utilizes AutoFlare® technology to ensure a metal-to-metal seal without the need for gaskets, delivering a pressure-tight connection suitable for both residential and commercial gas systems.

Engineered for Gas Line Reliability

• ✅ Brass Body Construction Manufactured from lead-free brass, ensuring mechanical strength, resistance to dezincification, and long service life under thermal cycling and pressurized conditions.
• ✅ AutoFlare® Design Forms a secure flare during installation, eliminating the need for separate flare tools while maintaining CSA and ICC compliance for gas systems.
• ✅ Seamless Metal Seal Designed for use with TracPipe® and similar CSST products, forming a metal-to-metal seal that does not require thread sealants on the flare.
• ✅ High Temperature and Pressure Ratings Rated for working pressures in excess of 5 psi and suitable for natural gas and propane systems within required operating temperatures.
• ✅ Code-Compliant Approved for use under ANSI LC 1 / CSA 6.26 and meets ICC-ES PMG and other jurisdictional certifications.

Applications

This fitting is typically used in gas distribution piping systems, providing a safe transition or continuation between lengths of 1-1/4" CSST. It is suitable for both interior and exterior gas line installations in systems governed by national fuel gas codes, including new construction and retrofit applications.

Installation Guidelines

Proper installation requires the use of a tubing cutter to square the end of the CSST, followed by use of the split-ring ferrule and nut system to form the flare as the nut is torqued onto the body. It is critical that all installations be performed in accordance with manufacturer instructions and local code requirements. Pressure testing after installation is required to confirm seal integrity.

Technical Specifications

• Material: Lead-free brass
• Size: 1-1/4 inch
• Connection: AutoFlare compression fitting for CSST
• Standards: ANSI LC 1 / CSA 6.26, ICC-ES PMG listed
• System Use: Compatible with TracPipe® and similar CSST systems

Did You Know?

Unlike traditional flare fittings, AutoFlare® components integrate the flaring function into the tightening process, significantly reducing installation time while maintaining mechanical reliability. This innovation helps ensure consistent performance across job sites and reduces potential error from improper flare tools.

The 1-1/4" Brass AutoFlare Coupling offers robust, compliant connections in high-demand gas distribution systems. Its design simplifies installation without sacrificing safety, making it an essential component for professional gas fitters handling CSST installations to code.