Sigma 810051409 Malleable Iron Pipe Tee 2x3/4x2 in Npt 150lb

Product Description

The SIGMA 810051409 is a malleable iron reducing pipe tee designed for threaded pipe assemblies in low-pressure piping systems. Conforming to a 150 lb pressure class with NPT (National Pipe Taper) end connections, this fitting accepts a 2-inch run on both ends and a 3/4-inch branch outlet. The black oxide finish provides a degree of surface protection against oxidation during storage and installation. Malleable iron construction delivers the toughness needed for mechanical, plumbing, and fire protection piping applications where cast iron would be too brittle and steel butt-weld fittings are impractical.

This tee is suited for residential and light commercial piping installations including steam, water, and air distribution systems operating within standard 150 lb class pressure limits. The reducing branch configuration makes it a practical choice when a main run must supply a smaller branch line without additional reducer fittings. Licensed plumbers and pipefitters commonly install this type of fitting in mechanical rooms, utility piping, and above-ceiling distribution work.

Key Features

• Malleable iron construction for impact resistance and ease of threading in the field
• NPT threaded ends for compatibility with standard tapered pipe threads
• 150 lb pressure class rating for low-pressure steam, water, and air service
• Reducing branch outlet: 2 inches run by 3/4 inch branch by 2 inches run
• Black oxide finish for basic surface corrosion resistance during handling and storage

Compatibility

Designed as an OEM-style replacement or standard-use malleable iron tee for 150 lb NPT threaded piping systems. Compatible with standard tapered NPT pipe threads on nominal 2-inch and 3/4-inch pipe.

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 removing any existing fittings or making new connections. Apply an approved pipe thread sealant or PTFE tape to male NPT threads before assembly. Do not over-torque threaded connections, as malleable iron can crack if excessive force is applied.

Technical Specifications

• Material: Malleable Iron
• Finish: Black Oxide
• End Style: NPT (National Pipe Taper)
• Pressure Class: 150 lb
• Nominal Size: 2 x 3/4 x 2 inches
• Figure Number: 1164R

Standard Information

• Brand: SIGMA
• Manufacturer Part Number: 810051409