Bk Mueller 520-003HN Black 90 Degree Elbow 1/2 in 25 Pack

Product Description

The BK Mueller 520-003HN is a 1/2-inch black 90-degree equal elbow fitting used to redirect gas piping at a right angle. This malleable iron elbow is a standard black-pipe component found throughout residential and light commercial gas distribution systems. It connects two equal-diameter pipe runs at 90 degrees, allowing installers to route gas lines around obstacles or through framing. Each carton contains 25 fittings, making this pack well suited for job-site stocking or rough-in work where multiple elbows are needed across a single project. Licensed plumbers and gas fitters are the primary installers of this type of fitting.

This fitting is designed for use in threaded black iron gas piping systems. Typical applications include natural gas and propane distribution lines running to furnaces, boilers, water heaters, ranges, and other gas-fired appliances in residential and light commercial construction. The 1/2-inch pipe size is one of the most common sizes used for branch lines off main gas headers and for final connections to appliances. The 25-piece package quantity supports installer efficiency on multi-unit or multi-appliance jobs.

Key Features

• 90-degree equal elbow configuration for right-angle direction changes in 1/2-inch black pipe runs
• Black iron construction standard for gas service piping applications
• Equal-end fitting — same pipe size on both ports, no reducer required
• Threaded connections compatible with standard NPT black iron pipe
• Sold in a 25-piece unit pack for job-site convenience

Compatibility

Designed as an OEM-style replacement and standard-stock fitting for 1/2-inch threaded black iron gas pipe systems.

Installation Notes

Installation must be performed by a licensed plumber or gas fitter in accordance with local codes and the International Fuel Gas Code (IFGC). Shut off and lock out the gas supply at the meter or main shutoff before cutting into any existing gas line. Apply an approved pipe thread sealant or tape rated for gas service to all male threads before assembly. Pressure-test the completed assembly per local code requirements before restoring gas flow.