Sigma 811043405 Galvanized Reducing Tee 1-1/4x1x1 in 150lb

Product Description

The SIGMA 811043405 is a malleable iron galvanized reducing tee fitting conforming to the FIG 3105R pattern. It accepts nominal pipe sizes of 1-1/4 inches on the run and 1 inch on both the branch and outlet, with female national pipe taper (FNPT) threads on all three ports. Rated at 150 lb pressure class, this tee is built for general-purpose piping systems in commercial and industrial environments. Licensed plumbers and pipefitters install it where a threaded branch connection is needed to reduce flow to a smaller-diameter line. The galvanized finish provides corrosion resistance suitable for water, air, and other compatible service fluids.

This reducing tee is used in low-pressure threaded piping systems including domestic water distribution, compressed air lines, and light industrial process piping. The 1-1/4 inch run with 1 inch branch configuration suits common distribution headers that step down to fixture or equipment supply branches. It is a standard import fitting widely stocked for maintenance, repair, and new construction applications in both commercial and light industrial settings.

Key Features

• FIG 3105R pattern malleable iron reducing tee with 150 lb pressure class rating
• FNPT threads on all three ports for standard threaded pipe connections
• Galvanized finish for corrosion resistance in wet and humid service environments
• Nominal sizing of 1-1/4 x 1 x 1 inches covers common header-to-branch reduction scenarios
• Malleable iron construction provides strength and impact resistance suited to mechanical piping systems

Compatibility

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

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local plumbing codes and IPC requirements. Shut off and depressurize the piping system fully before disassembling or adding fittings. Apply an approved thread sealant or PTFE tape to male threads before assembly. Do not over-tighten threaded connections, as malleable iron fittings can crack if excessive torque is applied without reference to manufacturer guidelines.

Technical Specifications

• Fitting Type: Reducing Tee
• Figure Pattern: FIG 3105R
• Nominal Size: 1-1/4 x 1 x 1 inches
• End Style: FNPT (Female National Pipe Taper)
• Pressure Class: 150 lb
• Material: Malleable Iron
• Finish: Galvanized

Standard Information

• Brand: SIGMA
• Manufacturer Part Number: 811043405