Bk 521-983HN Black Iron Hex Bushing 2x1/2 in

Product Description

The BK 521-983HN is a black malleable iron hex bushing used to reduce pipe size at threaded connections in gas, steam, air, and water piping systems. The male thread measures 2 inches and the female thread measures 1/2 inch, making this bushing a direct reducer for transitioning between two pipe sizes within the same run. Each fitting ships individually flag tagged and bears the Mueller logo cast directly into the body. All fittings are 100% inspected and quality tested before leaving the facility. Licensed plumbers and pipefitters are the typical installers, and the fitting sees use in both residential and light commercial mechanical systems.

This hex bushing is suited for threaded piping applications including gas distribution, compressed air lines, steam systems, and potable or non-potable water lines. The hexagonal body provides wrench flats for easy installation with a pipe wrench or adjustable wrench. The larger size refers to the male thread and the smaller size refers to the female thread. This fitting is sold individually and is a manufactured import that meets recognized domestic standards for material and thread form.

Key Features

• Black malleable iron construction per ANSI/ASTM A-197
• Dimensions conform to ANSI/ASME B16.3, B16.14, and B16.39
• Threads cut to ANSI B1.20.1 NPT standard
• Hexagonal body provides full wrench engagement during installation
• Mueller logo cast into body; each fitting individually flag tagged
• 100% inspected and quality tested

Compatibility

Designed as a standard NPT-threaded hex bushing for use in malleable iron pipe systems requiring a 2-inch male to 1/2-inch female reduction.

Installation Notes

Installation is performed by a licensed plumber or pipefitter. Shut off and depressurize the piping system completely before threading this bushing into the line. Apply an approved pipe thread sealant or PTFE tape to the male threads before assembly, and use a pipe wrench on the hex body to tighten. Follow all applicable local plumbing and mechanical codes, including IPC and IFGC requirements where the fitting is used in gas service.

Technical Specifications

• Material: Black malleable iron
• Material Standard: ANSI/ASTM A-197
• Dimension Standard: ANSI/ASME B16.3, B16.14, B16.39
• Thread Standard: ANSI B1.20.1 NPT
• Male Thread Size: 2 inches
• Female Thread Size: 1/2 inch
• Weight: 0.5 pounds
• Sold As: Each

Standard Information

• Brand: BK
• Manufacturer Part Number: 521-983HN