Sigma 819907486 Hex Head Bushing 1-1/2 X 3/4 in Malleable Iron

Product Description

The SIGMA 819907486 is a FIG 383 hex head bushing designed to reduce a 1-1/2 inch male NPT thread down to a 3/4 inch female NPT thread. Constructed from malleable iron with a galvanized finish, this bushing provides durable, corrosion-resistant performance in threaded pipe assemblies. The hex head design allows for secure wrench engagement during installation. It is a standard fitting used by plumbers and pipefitters in commercial and industrial piping systems where a threaded reducing connection is required.

This hex head bushing is suited for use in water distribution, general plumbing, and mechanical piping systems where a reduction from 1-1/2 inch to 3/4 inch NPT is needed. The galvanized malleable iron construction makes it appropriate for above-ground and exposed interior applications. It is commonly installed in pipe headers, manifolds, and branch takeoffs in both new construction and retrofit projects.

Key Features

• 1-1/2 inch MNPT inlet reduces to 3/4 inch FNPT outlet
• Malleable iron construction provides strength and impact resistance
• Galvanized finish offers corrosion protection for mechanical piping environments
• Hex head profile allows firm wrench grip for proper torque during installation
• FIG 383 pattern conforms to standard threaded pipe fitting dimensions

Compatibility

Designed as an OEM-style replacement or standard-service fitting for threaded malleable iron pipe assemblies using NPT-standard connections in plumbing and mechanical piping systems.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local plumbing codes and ASME B16.3 standards for malleable iron threaded fittings. Shut off and depressurize the affected pipe system before making any connections. Apply an appropriate thread sealant or PTFE tape to the male threads before assembly. Do not over-tighten; use a properly sized pipe wrench on the hex head to achieve a leak-free connection without cracking the fitting.

Technical Specifications

• Nominal Size: 1-1/2 x 3/4 inches
• End Style: MNPT x FNPT
• Material: Malleable Iron
• Finish: Galvanized
• Figure: FIG 383

Standard Information

• Brand: SIGMA
• Manufacturer Part Number: 819907486