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Home Plumbing Rough Plumbing Supplies Pipe Fittings Black Pipe Fittings Black Reducing Couplings 521-321HC 3/8IN X 1/4IN BLACK COUPLING

521-321HC 3/8IN X 1/4IN BLACK COUPLING

PART 639370
SUPPLIER B & K LLC
SUPPLIER PART # 521-321HC
RANK B
SHELF PACK 30
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About this item

The B&K 521-321HC Black Iron Reducing Coupling is engineered for secure and reliable connections between two male-ended pipes of different diameters. Made from durable black iron, this coupling is ideal for heavy-duty applications in plumbing and industrial systems. Its malleable construction ensures a tight seal and long-lasting performance under demanding conditions. Threaded ends meet industry standards for compatibility and ease of installation, making it a trusted choice for professionals and DIY enthusiasts.

Key Features:

  • Premium Black Iron Construction: Provides strength and durability for industrial-grade applications.
  • Reducing Design: Connects pipes of different diameters for versatile system configurations.
  • 150-lb Class Malleable Fitting: Ensures a secure seal and robust performance.
  • Threaded Ends: Complies with ANSI/ASME B1.20.1 standards for leak-free connections.
  • Pressure & Temperature Capability: Handles up to 500 PSI at 150°F for demanding environments.
  • Standards Compliance: Meets ASTM and ASME specifications for quality assurance.
  • Versatile Applications: Suitable for transporting lubricant, oil, grease, LP gas, natural gases (nitrogen, oxygen), steam, and diesel.
  • Not for Potable Water: Designed for industrial and mechanical systems only.

Applications:

  • Plumbing repairs and extensions
  • Industrial fluid and gas transport
  • DIY projects requiring durable fittings
  • Systems handling steam, fuel, and compressed gases

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Brand LDR Malleables
Color Black
Length 3 Inch
Size 3/8 in x 1/4 in
Material Black Iron
Type Reducing Coupling
Class 150-lb malleable fitting
Pressure Rating Up to 500 PSI
Temperature Rating 150°F
Thread Standard ANSI/ASME B1.20.1
Compliance Meets ASTM and ASME standards
UPC Code 032888406957
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