Sigma 810047209 Malleable Iron Reducing Tee 1-1/2x1x1-1/2 Fnpt

Product Description

The SIGMA 810047209 is a FIG 1105R malleable iron reducing tee designed for threaded pipe assemblies in commercial and industrial piping systems. It features female national pipe thread (FNPT) connections on all three ports with a nominal size configuration of 1-1/2 x 1 x 1-1/2 inches, allowing a branch reduction from 1-1/2-inch run pipe down to a 1-inch branch outlet. Rated at 150 lb, this fitting is finished in black oxide and is suited for gas, air, water, and steam distribution lines where a durable, code-compliant threaded fitting is required. Licensed plumbers and pipefitters are the typical installers.

This reducing tee is used in residential and light commercial piping installations where a branch takeoff at a reduced diameter is needed along a main run. Common applications include natural gas distribution headers, compressed air systems, hydronic heating supply lines, and general industrial fluid conveyance. The FNPT thread pattern on all three ports is compatible with standard NPT-threaded pipe and fittings. The black oxide finish provides a base level of corrosion resistance suitable for dry or controlled-environment service conditions.

Key Features

• Reducing configuration: 1-1/2 x 1 x 1-1/2 inch nominal with FNPT connections on all three ports
• 150 lb pressure rating for use in standard-duty threaded piping systems
• Malleable iron construction provides strength and impact resistance over cast iron
• Black oxide finish for base corrosion resistance in controlled environments
• FIG 1105R pattern — a widely recognized standard for threaded reducing tees

Compatibility

Designed as an OEM-style replacement or new-installation fitting for standard 150 lb malleable iron threaded piping systems using NPT connections.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable codes such as the International Plumbing Code (IPC) or International Fuel Gas Code (IFGC). Shut off and depressurize the piping system completely before removing or installing any threaded fitting. Apply an appropriate pipe thread sealant or PTFE tape to the male threads before assembly, and hand-tighten before finishing with a pipe wrench. Do not over-torque malleable iron fittings, as the material can crack under excessive stress.