Sigma 819906686 Hex Head Pipe Bushing 1x1/2 in 150lb Galvanized

Product Description

The SIGMA 819906686 is a standard hex head pipe bushing designed to reduce a 1-inch male NPT connection down to a 1/2-inch female NPT connection. Manufactured from malleable iron with a galvanized finish, this FIG 3383 bushing is rated for 150 lb service and provides a durable, corrosion-resistant transition between pipe sizes. The hex head profile allows for wrench engagement during installation, making it a straightforward fitting for plumbing, HVAC piping, fire protection, and general industrial piping systems. Licensed plumbers and pipefitters routinely specify this type of fitting for threaded black or galvanized pipe assemblies.

This bushing is suited for use in residential and commercial piping systems where a threaded reducer fitting is required between nominal 1-inch and 1/2-inch pipe runs. Typical applications include water supply lines, low-pressure gas piping, compressed air systems, and HVAC hydronic loops where pipe size transitions are needed at valves, gauges, or equipment connections.

Key Features

• Hex head design allows full wrench engagement for proper torque during installation
• MNPT x FNPT end style provides a standard threaded reducer connection
• 150 lb pressure rating suitable for common plumbing and HVAC service conditions
• Malleable iron construction offers strength and resistance to mechanical stress
• Galvanized finish provides corrosion protection for exposed or damp environments
• FIG 3383 designation for straightforward cross-reference and procurement

Compatibility

Designed as an OEM-style replacement and standard fitting for 150 lb malleable iron threaded pipe systems using nominal 1-inch to 1/2-inch MNPT x FNPT connections.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable codes such as the IPC or IFGC. Shut off and depressurize the piping system completely before removing or installing threaded fittings. Apply an approved thread sealant or PTFE tape to the male threads before assembly. Do not over-tighten malleable iron fittings, as excessive force can crack the casting.

Technical Specifications

• Nominal Size: 1 x 1/2 inch
• 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: 819906686