The B&K 520-504HN Street Elbow is a durable, high-performance fitting designed to change the direction of flow in piping systems by 45 degrees. Made from black malleable iron, this elbow is engineered for strength, corrosion resistance, and long-term reliability in both residential and commercial applications.

Its street elbow configuration features one female iron pipe (FIP) end and one male iron pipe (MIP) end, allowing for direct connection to other threaded fittings or pipe sections without the need for additional couplings. The 45-degree bend is ideal for installations requiring a smooth directional change while maintaining flow efficiency.

This fitting meets rigorous industry standards including ASTM and ASME specifications, and is UL and FM listed, making it suitable for use in gas, oil, air, and non-potable water systems, as well as decorative and industrial-style projects.

Key Features

• Model: 520-504HN
• Size: 3/4 inch
• Material: Black malleable iron – strong and corrosion-resistant
• Finish: Black oxide coating
• Connection Type: Threaded FIP x MIP (Female x Male Iron Pipe)
• Angle: 45 degrees (1/8 bend)
• Design: Street elbow for direct connection without additional fittings
• Pressure Rating: Up to 300 PSI
• Temperature Rating: Up to 350°F
• Standards Compliance:
  • ASTM and ASME standards
  • ANSI B1.20.1 thread specifications
• Certifications:
  • UL Listed
  • FM Approved
• Dimensions:
  • Height: 2 in
  • Width: 2 in
  • Depth: 2 in
  • Weight: Approx. 0.32 lbs
• Warranty: 1-Year Manufacturer Warranty

Applications

• Gas Systems – Certified for use with natural and LP gases
• Oil Lines – Suitable for fuel delivery and transfer systems
• Air Compression Systems – Reliable in pneumatic applications
• Non-Potable Water Systems – Effective in utility and drainage setups
• Industrial Piping – Ideal for mechanical and process piping layouts
• Decorative Projects – Popular in DIY furniture and industrial-style builds
• HVAC & Plumbing – Used in heating, cooling, and general plumbing installations