Sigma 819907528 Hex Head Pipe Bushing 1-1/2 X 1/2 in 150 Lb

Product Description

The SIGMA 819907528 is a standard hex head pipe bushing designed to reduce a 1-1/2 inch male NPT pipe thread down to a 1/2 inch female NPT fitting. Constructed from malleable iron with a galvanized finish, this FIG 3383 bushing is rated for 150 lb service. The hex head design allows for easy wrench engagement during installation, making it a practical choice for piping assemblies where thread reduction is needed in tight or accessible locations. Plumbers and pipefitters install this fitting in both new construction and retrofit piping systems across commercial and residential applications.

This bushing is suited for use in water, air, and other compatible fluid piping systems where a threaded reduction between 1-1/2 inch and 1/2 inch pipe sizes is required. The MNPT x FNPT end configuration allows it to thread directly into a female-threaded fitting or valve body on one end and accept a male-threaded pipe or fitting on the other. It is a standard fitting used in plumbing, HVAC piping, and general mechanical piping systems.

Key Features

• Reduces 1-1/2 inch MNPT to 1/2 inch FNPT in a single fitting
• Malleable iron construction provides strength and resistance to impact in piping systems
• Galvanized finish adds corrosion resistance for wet or exposed environments
• Hex head design allows secure wrench grip for proper torque during makeup
• 150 lb pressure class rating suitable for standard commercial and residential piping service
• FIG 3383 standard form factor for straightforward sourcing and replacement

Compatibility

Designed as a standard 150 lb malleable iron hex head bushing compatible with 1-1/2 inch MNPT x 1/2 inch FNPT threaded piping systems in general plumbing and mechanical applications.

Installation Notes

Installation of threaded pipe fittings is typically performed by a licensed plumber or pipefitter. Shut off and depressurize the piping system completely before removing or installing any threaded fittings. Apply an approved thread sealant or PTFE tape to the male threads before makeup, following local plumbing code requirements such as the IPC or IFGC where applicable. Do not over-tighten, as malleable iron fittings can crack under excessive force.

Technical Specifications

• Nominal Size: 1-1/2 x 1/2 inches
• End Style: MNPT x FNPT
• Pressure Rating: 150 lb
• Material: Malleable Iron
• Finish: Galvanized
• Figure Number: FIG 3383

Standard Information

• Brand: SIGMA
• Manufacturer Part Number: 819907528