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Home Plumbing Rough Plumbing Supplies Pipe Fittings Black Pipe Fittings Black Crosses 521-004HC 3/4IN BLACK CROSS

521-004HC 3/4IN BLACK CROSS

PART 683671
SUPPLIER B & K LLC
SUPPLIER PART # 521-004HC
RANK D
SHELF PACK 30
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About this item

The B&K 521-004HC is a 3/4-inch black iron pipe cross fitting designed to connect four pipe sections at a single intersection point. As part of the ProLine Series, this fitting is engineered for strength, durability, and performance in a wide range of industrial, mechanical, and fuel system applications.

Made from 150-lb class malleable black iron, this cross is ideal for use in systems transporting lubricants, oils, greases, LP gases, natural gases (e.g., nitrogen, oxygen), steam, and diesel. It is not intended for potable water applications. The female iron pipe (FIP) threaded ends conform to ANSI/ASME B1.20.1 standards, ensuring a secure and leak-resistant connection.

The relative softness of the malleable iron allows for a tight seal, while the robust construction supports pressures up to 500 PSI at 150°F. This makes the 521-004HC a dependable choice for demanding environments where multiple pipe runs must intersect.

Key Features:

  • Material: 150-lb class malleable black iron for industrial-grade strength
  • Connection Type: 3/4-inch FIP (Female Iron Pipe) threaded ends
  • Design: Four-way cross fitting for intersecting pipe systems
  • Pressure Rating: Up to 500 PSI at 150°F
  • Thread Standard: ANSI/ASME B1.20.1 compliant
  • Compliance: Meets ASTM and ASME specifications
  • Seal Integrity: Malleable iron provides a secure, tight seal
  • Finish: Black iron for corrosion resistance in non-potable systems

Applications:

  • Fuel Systems: Suitable for LP gas and natural gas distribution
  • Industrial Piping: Used in systems transporting lubricants, oils, greases, and diesel
  • Steam Lines: Compatible with low-pressure steam applications
  • Mechanical Systems: Ideal for HVAC and compressed air configurations
  • DIY Projects: Great for custom pipe furniture, shelving, and structural builds

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Nominal Size 3/4 in
Brand B&K
Color Black
Nominal Size 3/4 in
Material Steel
Finish Black
Connection Type Female Threaded
Thread Type NPT
Application Gas, Oil, Air, and Water Lines
Fitting Type Cross
Standards ASTM A53, ANSI B1.20.1
Brand Name Southland
Series 521
Weight (lb.) 0.55
UPC Code 032888406636
Shelf Pack 30
Minimum Order Qty 1
Supplier Name B & K LLC
Supplier Short Name B & K /Mue
Supplier Address 1 2600 Elm Hurst Road
Supplier City Elk Grove Villa
Supplier State IL
Supplier Zip 60007
Country US
Supplier Email brett.merrick@colemanrussell.com
Supplier Url www.muellerindustries.com
Buyer Name Michael Heck
Supplier Phone (800) 782-2385
Supplier Fax (800) 421-7724
Our Customer Id 48813001
Return Policy Return to Wallace
Product Lines Valves, Faucets, Pipe Fittings
Rep Name Brett Merrick
Rep Address Rose Maria Lighthal l@ Factory
Rep Phone (800) 777-0270
Rep Cell (931) 510-7989
Rep Fax (205) 836-6528
Rep Email brett.merrick@colemanrussell.com
Rep Agency Coleman-Russell