Sigma 812509206 Fig 3463 Ground Joint Union 2in Fnpt 150lb

Product Description

The SIGMA 812509206 is a FIG 3463 ground joint pipe union designed for threaded pipe assemblies in gas, steam, and liquid piping systems. It features a female NPT (FNPT) end style on both ports and is rated at 150 lb, making it suitable for moderate-pressure service in commercial and industrial piping applications. Constructed from malleable iron with a black finish, this union provides reliable mechanical strength and a leak-resistant ground joint seat that allows easy disconnection and reconnection of pipe sections without disturbing the rest of the run. Licensed plumbers and pipefitters install this type of fitting as a standard component in maintainable piping systems.

This ground joint union is suited for use in residential and commercial piping systems where threaded iron pipe is specified. Common applications include gas distribution piping, steam lines, hydronic heating systems, and general industrial process piping. The 2 inch nominal size fits standard Schedule 40 and Schedule 80 black iron pipe. It is typically installed wherever future service access or equipment disconnection is anticipated.

Key Features

• FIG 3463 ground joint design provides a metal-to-metal seat for secure, leak-resistant sealing
• 2 inch nominal FNPT end connections for use with standard threaded iron pipe
• 150 lb pressure rating suitable for moderate-pressure gas, steam, and liquid service
• Malleable iron construction offers high impact resistance and durability in demanding piping environments
• Black finish is standard for gas and steam piping applications

Compatibility

Designed as an OEM-style replacement and standard-fit union for 2 inch nominal threaded malleable iron piping systems rated at 150 lb class service.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes and the International Fuel Gas Code (IFGC) or International Plumbing Code (IPC) where applicable. Shut off and depressurize the affected piping system completely before disassembling or installing any union fitting. Apply an appropriate thread sealant or PTFE tape to the male threads before make-up, and tighten connections using pipe wrenches to achieve a wrench-tight fit. Do not over-tighten or use impact tools, as this can crack malleable iron fittings.

Technical Specifications

• Figure Number: FIG 3463
• Nominal Size: 2 inches
• End Style: FNPT (Female National Pipe Thread)
• Pressure Rating: 150 lb
• Material: Malleable Iron
• Finish: Black

Standard Information

• Brand: SIGMA
• Manufacturer Part Number: 812509206