B K Mueller 520-001HN Black 90 Degree Elbow 1/4 Inch

Product Description

The B K Mueller Industries 520-001HN is a 1/4-inch black iron 90-degree equal elbow designed for use in gas piping and low-pressure fluid distribution systems. This fitting changes flow direction by 90 degrees while maintaining a consistent bore size on both ends. It is sold in a package of 10 individual fittings, making it a practical choice for jobs requiring multiple connections. Licensed plumbers, pipefitters, and gas line technicians are the typical installers for this type of fitting in residential and light commercial applications.

This 90-degree equal elbow is suited for threaded black iron pipe systems commonly found in natural gas supply lines, propane distribution runs, and low-pressure air or steam applications. Its equal-end configuration means both the inlet and outlet accept the same 1/4-inch pipe thread, simplifying layout and reducing the need for additional reducers or adapters in straight-run direction changes.

Key Features

• 90-degree turn maintains full bore flow path with equal 1/4-inch threaded ends on both sides
• Black iron construction suitable for gas, air, and low-pressure steam service
• Packaged in quantities of 10 per unit for multi-connection jobs
• Threaded ends accept standard NPT pipe for straightforward assembly
• Compact form factor fits tight spaces common in residential gas rough-in work

Compatibility

Designed as an OEM-style threaded fitting compatible with standard 1/4-inch NPT black iron pipe systems used in residential and light commercial gas and low-pressure piping installations.

Installation Notes

Installation of black iron gas fittings must be performed by a licensed plumber or pipefitter in accordance with IFGC and local code requirements. Shut off and verify the absence of gas or pressure in the line before assembly or disassembly. Apply an approved pipe thread sealant rated for gas service to all male threads before make-up. Do not overtighten threaded connections, as this can crack fittings or damage threads.