Sigma 811088012 Galvanized Reducing Coupling 1-1/4x1/2 Fnpt

Product Description

The SIGMA 811088012 is a malleable iron galvanized reducing coupling designed to connect two threaded pipe sections of different sizes in a single inline fitting. Rated for 150 lb service, this coupling features female national pipe taper (FNPT) ends on both sides, accepting a 1-1/4 inch nominal pipe on one end and a 1/2 inch nominal pipe on the other. The galvanized finish provides corrosion resistance for use in wet or exposed environments. Plumbers and pipefitters install this fitting in threaded iron pipe systems across a wide range of commercial and residential applications.

This reducing coupling is suited for threaded iron piping systems in plumbing, gas distribution, compressed air, and mechanical utility installations. It allows a technician to step down pipe size within a run without requiring a separate reducer bushing or additional fittings. The FNPT thread form is compatible with standard NPT pipe and fittings throughout North American trade work. The galvanized coating makes it appropriate for installations where moisture exposure or mild corrosive conditions are a concern.

Key Features

• 1-1/4 inch to 1/2 inch nominal size reduction in a single inline fitting
• Female NPT (FNPT) threads on both ends for standard threaded pipe assembly
• 150 lb pressure rating for general service piping applications
• Malleable iron construction provides strength and impact resistance
• Galvanized finish adds corrosion resistance in damp or exposed conditions

Compatibility

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

Installation Notes

This fitting is installed by licensed plumbers or pipefitters working on threaded iron pipe systems. Shut off and depressurize the pipe system completely before removing or installing any threaded fittings. Apply an approved thread sealant or PTFE tape to the male pipe threads before assembly, and tighten to a wrench-tight fit. Follow all applicable local plumbing codes and IFGC requirements when used in gas service.

Technical Specifications

• Nominal Size: 1-1/4 x 1/2 inches
• End Style: FNPT (Female National Pipe Taper) both ends
• Pressure Rating: 150 lb
• Material: Malleable Iron
• Finish: Galvanized
• Figure Number: 3121R

Standard Information

• Brand: SIGMA
• Manufacturer Part Number: 811088012