1-1/4 inch Carbon Steel 403G Gas Press Reducing Adapter Press x Female

1-1/4 Inch Carbon Steel 403G Gas Press Reducing Adapter – Press x Female Thread for Fuel Gas Systems

The 1-1/4 inch Carbon Steel 403G Gas Press Reducing Adapter provides a direct transition from press-joined carbon steel piping to female threaded connections in fuel gas applications. Designed for use with approved press tools and compatible sealing elements, this adapter ensures mechanical integrity and pressure-rated performance in gas distribution systems requiring mixed connection types.

Product Design and Functional Performance

This reducing adapter is constructed from zinc-coated carbon steel and includes a gas-rated yellow HNBR (or EPDM) sealing element pre-installed in the press connection. It allows installers to transition from press systems to NPT-threaded components without welding or threading on-site. The fitting supports efficient field installation and meets industry certification requirements for use in natural gas and propane systems.

• ✅ Material: Carbon steel with zinc-plated finish for corrosion protection
• ✅ Sealing Element: Factory-installed gas-rated HNBR/EPDM (ANSI LC-4 / CSA 6.32 compliant)
• ✅ Connection: Press x Female NPT for integration with valves, regulators, and threaded assemblies
• ✅ Leak Detection: Visual indicator for unpressed connections during pressure testing

Technical Specifications

• Nominal Size: 1-1/4 inch
• Connection Type: Press x FNPT (Female National Pipe Thread)
• Working Pressure: Up to 125 psi (fuel gas service)
• Temperature Range: -40°F to 180°F (depending on seal material)
• Standards Compliance: ANSI LC-4 / CSA 6.32, NFPA 54

Common Applications

Used in fuel gas systems requiring transitions between press piping and threaded terminations, this fitting is suitable for branch line connections, appliance interfaces, manifold installations, and meter setups in commercial and residential buildings. It is ideal for use in systems where speed, safety, and code compliance are critical.

Installation Notes

Ensure proper preparation of pipe ends prior to pressing, including square cutting, deburring, and marking insertion depth. Threaded connections must use gas-rated thread sealant or tape as required. Torque threaded ends according to component manufacturer specifications. System testing must be performed using air or inert gas per applicable local codes.

Material Consideration

Carbon steel offers high strength, excellent dimensional stability, and durability under pressure, making it well-suited for modern gas distribution systems. The press x female configuration reduces component count and speeds installation without sacrificing mechanical performance.

The 1-1/4 Inch Carbon Steel 403G Gas Press Reducing Adapter delivers a code-compliant, flame-free connection between press and threaded fuel gas components, supporting long-term system performance and installation efficiency.