Coda Resources 506289 Black Union 1/2 Inch Malleable Iron

Product Description

The CODA RESOURCES 506289 is a straight malleable iron black union fitting sized at 1/2 inch on both ends with female threaded connections on each side. Designed for use in residential gas, air, and LP piping systems, this union allows technicians to disconnect and reconnect sections of threaded pipe without disturbing adjacent fittings. The malleable iron body meets ASTM A197 material specification and carries a pressure rating of 300 psi at 150 degrees F and 150 psi at 300 degrees F. Licensed plumbers and gas fitters install this fitting during rough-in and service work where a breakable joint is required.

This union is suited for residential gas distribution, compressed air lines, and liquid petroleum piping applications. The black finish is standard for gas service piping in residential construction. The straight configuration and symmetric 1/2 inch sizing make it a direct fit for common residential gas branch lines. It complies with ANSI/ASME B1.20.1, B16.3, B16.14, and B16.39, and carries UL and FM listings, making it acceptable for both code-required gas installations and general plumbing applications where those standards are specified.

Key Features

• Malleable iron body conforming to ASTM A197 for strength and durability in gas service
• 300 psi pressure rating at 150 degrees F and 150 psi at 300 degrees F
• Female threaded x female threaded end connections for standard NPT pipe assembly
• Black finish standard for residential gas piping service
• Compliant with ANSI/ASME B1.20.1, B16.3, B16.14, B16.39 and listed by UL and FM
• Straight union type allows easy disconnection of threaded pipe runs without cutting

Compatibility

Designed for use in residential gas, air, and LP piping systems with 1/2 inch female-threaded NPT connections. Also referenced by additional part number FMBU-12.

Installation Notes

Installation must be performed by a licensed plumber or gas fitter in accordance with applicable local codes and the International Fuel Gas Code (IFGC). Shut off and verify isolation of all gas or air supply before disassembling or installing any threaded union. Apply appropriate thread sealant listed for gas service to all male-threaded joints. Inspect union seat and nut for damage before assembly and do not overtighten, as malleable iron fittings are not designed for the same torque ranges as steel pipe nipples.

Technical Specifications

• Fitting Type: Straight Union
• Size A: 1/2 inch
• Size B: 1/2 inch
• End Connection: Female Threaded x Female Threaded
• Material: Malleable Iron
• Material Specification: ASTM A197
• Finish: Black
• Pressure Rating: 300 psi at 150 degrees F; 150 psi at 300 degrees F
• Application: Residential Gas, Air, LP
• Applicable Standards: ANSI/ASME B1.20.1, B16.3, B16.14, B16.39; UL; FM
• Additional Part Number: FMBU-12

Standard Information

• Brand: CODA RESOURCES
• Manufacturer Part Number: 506289