Sigma 819908047 Hex Head Bushing 2-1/2 X 1-1/2 in Galvanized

Product Description

The SIGMA 819908047 is a FIG 383 hex head bushing designed to reduce pipe thread connections from a larger male thread to a smaller female thread. The bushing measures 2-1/2 inches nominal on the male NPT end and 1-1/2 inches nominal on the female NPT end. Constructed from malleable iron with a galvanized finish for corrosion resistance, this fitting is a standard component in threaded pipe systems. It is installed by licensed plumbers and pipefitters working in commercial and industrial piping applications where pipe size reduction is required at a threaded joint.

This hex head bushing is suited for residential and commercial plumbing, HVAC piping, and general industrial pipe systems where a threaded reducer fitting is needed. The hex head profile allows for wrench engagement during installation, making it practical in tight or congested piping runs. It accepts standard NPT threading on both ends, making it compatible with common black iron and galvanized pipe assemblies.

Key Features

• 2-1/2 inches MNPT inlet reduces to 1-1/2 inches FNPT outlet
• Hex head design allows wrench engagement for secure installation
• Malleable iron construction provides strength and thread integrity under load
• Galvanized finish offers corrosion resistance in wet or outdoor environments
• FIG 383 pattern conforms to standard hex bushing dimensions

Compatibility

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

Installation Notes

Installation is typically performed by a licensed plumber or pipefitter. Shut off and depressurize the pipe system completely before removing or installing any threaded fittings. Apply an appropriate thread sealant or PTFE tape to the male threads before assembly. Hand-tighten first, then use a wrench on the hex head to achieve a proper seal without over-torquing the fitting.

Technical Specifications

• Nominal Size: 2-1/2 x 1-1/2 inches
• End Style: MNPT x FNPT
• Material: Malleable Iron
• Finish: Galvanized
• Figure: FIG 383

Standard Information

• Brand: SIGMA
• Manufacturer Part Number: 819908047