Sigma 811030808 Fig 3105 Straight Pipe Tee 2 in Fnpt 150 Lb

Product Description

The SIGMA 811030808 is a FIG 3105 straight pipe tee designed for threaded piping systems in commercial and industrial plumbing, HVAC hydronic, and mechanical applications. This fitting features a 2-inch nominal size with female National Pipe Taper (FNPT) end connections on all three ports. Constructed from malleable iron with a hot-dip galvanized finish, it carries a 150 lb pressure class rating. The galvanized coating provides corrosion resistance for use in wet or outdoor-exposed piping systems. Licensed plumbers and pipefitters are the typical installers for this class of fitting.

This tee is suited for residential and commercial piping systems where a straight branch connection is required at the same nominal pipe size. Common applications include water distribution, fire protection, compressed air, and hydronic heating systems. The FNPT threading on all three ports allows direct connection to standard NPT-threaded pipe and fittings without adapters. It is used wherever a run-and-branch configuration is needed at equal pipe diameters.

Key Features

• FIG 3105 straight tee configuration with equal-size FNPT ports on all three outlets
• 2-inch nominal pipe size for compatibility with standard NPT piping
• 150 lb pressure class malleable iron construction
• Hot-dip galvanized finish for corrosion resistance in wet and exposed environments
• FNPT end style allows direct threaded assembly without additional adapters

Compatibility

Designed as a standard 150 lb malleable iron threaded pipe fitting for use with 2-inch nominal NPT-threaded pipe in plumbing, HVAC, and mechanical piping systems.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local plumbing codes and ASME B16.3 standards for malleable iron threaded fittings. Shut off and depressurize the piping system completely before cutting into any existing line. Apply an appropriate thread sealant or PTFE tape to all male NPT threads before assembly, and tighten to manufacturer-recommended engagement depth without over-torquing. Inspect all joints for leaks before returning the system to service.

Technical Specifications

• Nominal Size: 2 inches
• End Style: FNPT (Female National Pipe Taper)
• Pressure Class: 150 lb
• Material: Malleable Iron
• Finish: Galvanized
• Figure Number: FIG 3105

Standard Information

• Brand: SIGMA
• Manufacturer Part Number: 811030808