Sigma 811089606 Malleable Iron Pipe Reducer 2x3/4 in Fnpt

Product Description

The SIGMA 811089606 is a malleable iron galvanized pipe reducer fitting designed for threaded pipe systems operating at 150 lb pressure ratings. Configured in a Figure 1125 pattern, this reducer transitions from a 2-inch nominal female connection to a 3/4-inch nominal female connection using FNPT (Female National Pipe Thread) end style on both ports. The galvanized finish provides corrosion resistance suited to water, air, and moderate-duty fluid applications. Licensed plumbers and pipefitters install this fitting in both new construction and retrofit service work where pipe size reduction is required within a threaded iron system.

This reducer is appropriate for residential and light commercial plumbing, HVAC hydronic piping, compressed air distribution, and general industrial pipe runs where 150 lb malleable iron fittings are specified. It is well suited to maintenance and repair scenarios where an existing threaded iron line must be reduced to a smaller branch or supply connection. No special tooling beyond standard pipe wrenches and thread sealant is required for installation.

Key Features

• 2-inch to 3/4-inch nominal reduction in a single fitting
• FNPT end style on both ports for standard threaded pipe engagement
• 150 lb pressure-rated malleable iron construction
• Galvanized finish for corrosion resistance in wet and humid environments
• Figure 1125 pattern — a widely recognized concentric reducer configuration

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 150 lb malleable iron threaded pipe systems using 2-inch and 3/4-inch nominal FNPT connections.

Installation Notes

Installation is performed by licensed plumbers or pipefitters. Shut off and depressurize the pipe system completely before removing any existing fittings or threading in this reducer. Apply an approved thread sealant or PTFE tape to the male threads of the mating pipe before engagement. Tighten with pipe wrenches to full thread engagement — do not over-torque malleable iron fittings, as the material can crack under excessive force.

Technical Specifications

• Nominal Size: 2 x 3/4 inches
• End Style: FNPT (Female National Pipe Thread)
• Pressure Rating: 150 lb
• Material: Malleable Iron
• Finish: Galvanized
• Figure: 1125

Standard Information

• Brand: SIGMA
• Manufacturer Part Number: 811089606