The B&K Products 521-205HN Black Iron Coupling is a high-performance fitting designed to securely connect two pipes of equal diameter. Made from malleable iron with a black finish, this coupling is engineered for strength and reliability in industrial and mechanical systems. It is not intended for potable water use but excels in applications involving lubricants, gases, and fuels.
This coupling is ideal for transporting lubricants, oils, greases, liquefied petroleum (LP) gases, natural gases (including nitrogen and oxygen), steam, and diesel. Its malleable iron construction ensures a tight seal due to the relative softness of the metal, which enhances thread engagement and leak resistance.
Threaded ends conform to ANSI/ASME B1.20.1 standards, ensuring compatibility with standard piping systems. The fitting meets ASTM and ASME standards and is rated for high-pressure applications, performing reliably up to 500 PSI at 150°F.
Key Features & Applications
- Black malleable iron construction for industrial-grade durability.
- 150-lb class malleable fittings for robust performance.
- Rated up to 500 PSI at 150°F, suitable for high-pressure systems.
- Threaded ends meet ANSI/ASME B1.20.1 standards for secure connections.
- Meets ASTM and ASME standards for quality assurance.
- Ideal for:
- Lubricant transport
- Oil and grease systems
- LP and natural gas lines
- Steam systems
- Diesel fuel systems
- DIY mechanical projects
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Brand
B&K
Color
Black
Inlet Diameter (in)
1
Inlet Connection
FIP
Outlet Diameter (in)
1
Outlet Connection
FIP
Product Length (in)
1.61
Product Height (in)
1.81
Product Width (in)
1.81
Product Weight (lbs)
0.434
Working Pressure (PSI)
232
Maximum Pressure (PSI)
300
Minimum Temperature (ºF)
-20
Working Temperature (ºF)
77
Maximum Temperature (ºF)
347
Warranty Code
1-year limited warranty
Product Type
Couplings
Product Material
Malleable Iron
Standards
HHXX, FM1920
UPC Code
032888406919
Shelf Pack
10
Minimum Order Qty
1
