Mueller Streamline 520-504hc Black Iron 45 Degree Street Elbow 3/4 Inch Fpt

Product Description

The Mueller Streamline 520-504hc is a black iron 45 degree street elbow with a 3/4 inch female pipe thread connection. This fitting is designed for use in gas piping, oil lines, and other industrial or commercial plumbing systems where black iron is the required material. Mueller Streamline is a well-established name in pipe fittings, and this elbow meets the demands of professional plumbers, pipefitters, and mechanical contractors working on both new installations and service replacements.

A street elbow differs from a standard elbow in that one end is male and the other is female. This design allows the fitting to thread directly into another fitting without the need for a short nipple in between. This saves time during installation and reduces the number of components needed at a joint. The 45 degree angle allows for a gradual directional change in a pipe run, which is useful when routing pipe around obstacles or making smooth transitions in tight spaces.

Black iron pipe fittings like the 520-504hc are commonly used in natural gas and propane distribution systems, as well as steam and air lines in industrial environments. Black iron is not coated with the zinc galvanizing found on galvanized fittings, which makes it the correct choice for gas applications where galvanizing can flake off and contaminate equipment or burners.

This fitting is sold as a single unit and features a standard 3/4 inch female pipe thread on the socket end. It is compatible with standard black iron pipe and fittings following NPT threading conventions. HVAC technicians, plumbers, and gas fitters working on residential or commercial projects will find this fitting straightforward to install using pipe thread sealant or PTFE tape rated for gas service.

• 45 degree street elbow configuration for directional changes without additional nipples
• Black iron construction suitable for gas, oil, steam, and air piping systems
• 3/4 inch female pipe thread for compatibility with standard NPT black iron pipe and fittings

Product Highlights

The Mueller Streamline 520-504hc delivers a reliable, code-appropriate black iron street elbow for trade professionals handling gas and industrial piping. Its street configuration simplifies installation by eliminating the need for an extra nipple at the connection point.

Product Information

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: 520-504hc

Technical Specifications

• Material: Black Iron
• Fitting Type: Street Elbow
• Angle: 45 Degrees
• Connection Type: Female Pipe Thread (FPT)
• Pipe Size: 3/4 inches
• Thread Standard: NPT
• Pack Size: 1 Each
• Unit of Measure: EA