B K Mueller 520-203HN Black 45 Degree Elbow 1/2 in 10 Pack

Product Description

The B K Mueller Industries 520-203HN is a 1/2-inch black iron 45-degree equal elbow designed to redirect gas or fluid piping at a 45-degree angle while maintaining a consistent bore size through both ends. Equal elbows pass full flow through the fitting without reducing pipe diameter, making them a standard choice wherever a moderate directional change is needed without pressure drop from a reduction. This fitting ships in a pack of 10 units, suited for plumbers and pipefitters stocking up for residential or light commercial gas line work.

This elbow is used in threaded black iron piping systems, most commonly in natural gas and propane distribution lines, as well as steam and low-pressure air applications. The 45-degree angle makes it useful in runs where a gentler directional change is preferred over a sharper 90-degree bend. Typical install scenarios include branch lines in residential gas service, boiler rooms, and utility spaces where rigid pipe routing requires angled offsets.

Key Features

• 45-degree angle provides a moderate directional change in threaded pipe runs
• Equal bore on both ends maintains consistent pipe diameter and flow path
• 1/2-inch size fits standard NPT-threaded black iron pipe
• Black iron construction suited for gas, steam, and low-pressure air service
• Sold in a 10-unit pack for job-lot stocking

Compatibility

Designed as an OEM-style replacement and standard-use fitting for 1/2-inch threaded black iron pipe systems in residential and light commercial gas and steam applications.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes and the International Fuel Gas Code (IFGC) where gas service is involved. Shut off the gas supply and verify zero pressure at the work area before threading any fittings. Apply an approved thread sealant or PTFE tape rated for gas service to all male threads before assembly. Do not over-torque the fitting; hand-tighten and wrench-tighten only to the degree required to achieve a leak-free joint.