1 inch Carbon Steel 477 1G Gas Press Flange Adapter

1 Inch Carbon Steel 477 1G Gas Press Flange Adapter – ANSI-Class Transition for Press Gas Piping Systems

The 1 inch Carbon Steel 477 1G Gas Press Flange Adapter is designed for connecting carbon steel press piping to ANSI B16.5 Class 150 flanged components in gas distribution systems. This fitting enables a mechanically secure, leak-resistant connection point between press pipe systems and flanged valves, regulators, or equipment, supporting compliance with fuel gas installation codes.

Engineered for System Compatibility and Performance

Constructed from corrosion-resistant, zinc-coated carbon steel, this adapter includes a factory-installed yellow HNBR (or EPDM) sealing element certified for use in natural gas and propane applications. The press connection is compatible with standard TH or V-type jaw profiles and allows flame-free installation, reducing labor time and jobsite risk.

• ✅ Material: Carbon steel body with zinc coating for environmental corrosion resistance
• ✅ Seal Element: Gas-rated HNBR/EPDM factory-installed O-ring compliant with ANSI LC-4 / CSA 6.32
• ✅ Flange Standard: ANSI B16.5 Class 150 bolt pattern for integration with flanged gas system components
• ✅ Connection Type: Press x Flange with unpressed joint detection capability for system testing

Technical Specifications

• Nominal Size: 1 inch
• Working Pressure: Up to 125 psi (fuel gas)
• Temperature Range: -40°F to 180°F (based on seal material)
• Applicable Standards: ANSI LC-4, CSA 6.32, NFPA 54 (National Fuel Gas Code)

Installation Practices

Installation requires use of approved press tools with calibrated jaws. Pipe must be cut square, deburred, and insertion depth marked before pressing. Flange-to-flange connections should be made using industry-standard torque values and appropriate gasket materials. Verify sealing integrity via inert gas or air pressure testing in accordance with local and national codes.

Applications

Typical use cases include connecting press piping to equipment such as gas meters, boiler manifolds, commercial appliances, or rooftop units where flange interfaces are required. Suitable for commercial, institutional, and residential gas systems designed with press-connect carbon steel components.

Material and Code Insight

Carbon steel is widely used in gas piping systems for its mechanical strength and dimensional stability under load. The 477 1G flange adapter provides a compliant method for introducing flanged transitions within flame-free gas line installations.

The 1 inch Carbon Steel 477 1G Gas Press Flange Adapter supports reliable, code-compliant transitions between press pipe systems and flanged assemblies in gas distribution networks. Designed for professional use, it offers high-integrity sealing and installation efficiency in pressure-rated environments.