B K Mueller 520-301HN 1/4 Inch Black 90 Street Elbow

Product Description

The B K Mueller Industries 520-301HN is a 1/4-inch black iron 90-degree street elbow designed for low-pressure gas, air, and fluid piping systems. A street elbow has one male end and one female end, allowing it to thread directly into a fitting without a nipple, which saves space in tight installations. This fitting is commonly used in gas piping rough-in work and general-purpose piping assemblies. Licensed plumbers, gas fitters, and pipefitters install this type of fitting in both residential and light commercial applications. Each package contains 10 units.

This 90-degree street elbow suits residential and light commercial piping applications where a direction change from a threaded pipe or fitting is required without adding a separate nipple. Common uses include natural gas and propane supply lines, compressed air distribution, and general-purpose black iron pipe assemblies. The 1/4-inch size is typical for branch lines, pilot gas supply, and smaller-diameter service runs.

Key Features

• 90-degree street elbow configuration with one male NPT end and one female NPT end
• 1/4-inch pipe size for use in smaller-diameter branch and service lines
• Black iron construction suited for gas, air, and compatible fluid service
• Space-saving design eliminates the need for a separate nipple when changing direction
• Sold in a package of 10 units for job-lot and service-truck stocking

Compatibility

Designed as an OEM-style replacement and standard-use fitting for 1/4-inch NPT black iron pipe systems in residential and light commercial gas and air piping applications.

Installation Notes

Installation should be performed by a licensed plumber or gas fitter in accordance with the International Fuel Gas Code (IFGC) or applicable local codes. Shut off and depressurize the line before disassembling any threaded connections. Apply listed pipe thread sealant or PTFE tape rated for gas service to all male threads before assembly. Do not use this fitting on systems carrying fluids or gases incompatible with black iron pipe.