Sigma 818907768 Hex Head Pipe Bushing 2x1 in 150lb Malleable Iron

Product Description

The SIGMA 818907768 is a standard hex head pipe bushing designed to reduce a 2-inch male NPT fitting down to a 1-inch female NPT port. Built from malleable iron with a black oxide finish, this bushing is rated for 150 lb service and handles the mechanical and thermal demands common in commercial and industrial piping systems. The hex head profile allows for wrench engagement during installation, providing controlled make-up torque without slippage. Licensed plumbers and pipefitters reach for this fitting when transitioning between pipe sizes in threaded black iron systems.

This bushing sees regular use in low-pressure steam, hydronic heating, compressed air, and general plumbing distribution systems where black iron threaded pipe is the standard material. It is appropriate for both residential and light commercial applications wherever a 2-inch to 1-inch NPT reduction is required in a malleable iron fitting assembly.

Key Features

• Hex head profile allows wrench engagement for precise, leak-free make-up
• Malleable iron construction resists impact and vibration in threaded piping systems
• Black oxide finish provides corrosion resistance suitable for black iron piping runs
• 150 lb pressure rating meets requirements for a wide range of low- and medium-pressure service applications
• MNPT x FNPT end style integrates directly into standard NPT threaded piping networks

Compatibility

Designed as an OEM-style threaded fitting for use in standard 150 lb malleable iron black pipe systems where a 2-inch to 1-inch NPT reduction is required.

Installation Notes

Installation is performed by licensed plumbers or pipefitters following applicable IPC and IFGC requirements for threaded pipe assemblies. Shut off and depressurize the system completely before threading or unthreading any fitting. Apply an approved thread sealant or PTFE tape to the male threads before make-up. Use a pipe wrench on the hex head to engage the fitting squarely and avoid cross-threading.

Technical Specifications

• Nominal Size: 2 x 1 inches
• End Style: MNPT x FNPT
• Pressure Rating: 150 lb
• Material: Malleable Iron
• Finish: Black Oxide

Standard Information

• Brand: SIGMA
• Manufacturer Part Number: 818907768