Sigma 811041011 Galvanized Reducing Tee 1x3/4x1/2 in 150lb

Product Description

The SIGMA 811041011 is a malleable iron galvanized reducing tee designed for threaded pipe assemblies in low-pressure fluid and gas distribution systems. Rated at 150 lb, this fitting accepts female National Pipe Taper (FNPT) connections on all three ports. The run measures 1 inch nominal, the branch reduces to 3/4 inch nominal, and the outlet further reduces to 1/2 inch nominal, making it a practical single-fitting solution where flow splitting and reduction are needed at the same point in the line. Licensed plumbers and pipefitters are the primary installers of this type of fitting.

This reducing tee is suited for residential and light commercial piping applications including potable water supply, hydronic heating, compressed air distribution, and low-pressure gas lines where galvanized malleable iron is an accepted material. The galvanized coating provides corrosion resistance in exposed or mildly corrosive environments. The FNPT thread pattern conforms to ANSI standard taper pipe thread, ensuring compatibility with standard NPT-threaded pipe and fittings throughout the assembly.

Key Features

• Three-port reducing configuration: 1 inch run x 3/4 inch run x 1/2 inch branch, all FNPT
• 150 lb pressure class malleable iron construction for durability in threaded systems
• Galvanized finish for corrosion resistance in exposed or damp installation environments
• FNPT threads conform to ANSI NPT taper pipe thread standard
• Compact one-piece design eliminates need for separate reducer bushings at the branch point

Compatibility

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

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local plumbing codes and the International Plumbing Code (IPC) or International Fuel Gas Code (IFGC) where applicable. Shut off and depressurize the affected line before disassembling or installing any threaded fittings. Apply thread sealant tape or pipe compound rated for the intended service medium to all male threads before assembly. Do not over-tighten; follow standard trade practice for thread engagement on NPT fittings.

Technical Specifications

• Nominal Size: 1 x 3/4 x 1/2 inches
• End Style: FNPT (Female National Pipe Taper)
• Pressure Rating: 150 lb
• Material: Malleable Iron
• Finish: Galvanized

Standard Information

• Brand: SIGMA
• Manufacturer Part Number: 811041011