1/2 inch Brass AutoFlare Gas Adapter with Steel Mount Flange Flange x Male

1/2 Inch Brass AutoFlare Gas Adapter – For CSST and Gas Appliance Transitions

The 1/2 inch Brass AutoFlare Gas Adapter is a mechanical flare-style transition fitting designed for use with corrugated stainless steel tubing (CSST) systems. It provides a reliable, gas-tight connection between CSST and threaded gas system components, such as valves, regulators, or appliance inlets. Compatible with AutoFlare® connection systems, this adapter supports safe and code-compliant gas installations.

Construction and Functional Characteristics

Manufactured from lead-free brass, this fitting offers high corrosion resistance and dimensional stability under thermal cycling. The precision-machined body includes an integrated flare seat designed to work with CSST stainless steel tubing and AutoFlare® internal bushings. The NPT female outlet provides a secure thread engagement for downstream connection to rigid pipe or gas appliance fittings.

• ✅ Material: Lead-free brass (complies with ASTM B16 and NSF/ANSI 372)
• ✅ Connection: AutoFlare x 1/2 inch FNPT
• ✅ Seal Method: Metal-to-metal flare seating surface; no additional sealant required on flare face
• ✅ Design Use: For natural gas and propane distribution systems using CSST

Technical Specifications

• Nominal Size: 1/2 inch
• Rated Pressure: Up to 5 psi (natural gas systems)
• Temperature Range: -40°F to 150°F (based on system components)
• Certifications: CSA-certified for use with listed CSST systems; conforms to ANSI Z223.1 / NFPA 54

Applications

Typical installations include transitions from CSST to gas-fired appliances (e.g., furnaces, water heaters, ranges) or termination points at valves, manifolds, or rigid piping. This adapter supports residential and light commercial applications where CSST is used to simplify routing of gas distribution systems.

Installation Guidelines

Must be installed using compatible AutoFlare tubing and tools. Ensure proper pipe preparation including cut squareness and correct bushing placement per manufacturer instructions. Do not apply thread sealant to the flare surface. Tighten per torque guidelines provided in the CSST installation manual. All connections must be leak-tested in accordance with local fuel gas code before placing the system in service.

Material Consideration

Brass is used in gas fittings due to its machinability, corrosion resistance, and thermal performance under variable operating conditions. AutoFlare fittings maintain consistent joint performance through precise metal-to-metal sealing and are widely accepted by U.S. model gas codes when installed per listing and manufacturer instructions.

The 1/2 Inch Brass AutoFlare Gas Adapter is a compliant and durable solution for CSST-to-threaded gas transitions, supporting safe installations across a wide range of residential and commercial gas systems.