The B&K Products 511-386HN Galvanized Reducing Coupling is a high-quality fitting designed to connect two male-ended pipes of differing diameters. Constructed from galvanized malleable iron and coated with zinc, this coupling offers superior corrosion resistance and long-term durability, even in demanding environments.

This reducing coupling is ideal for a wide range of plumbing and fluid transport applications. It is commonly used in potable water systems, compressed air lines, drainage systems, and various DIY projects. Its versatility extends to hot and cold water systems, refrigeration setups, sprinkler installations, and fluid conveyance involving gasoline, diesel, and alcohol.

The coupling’s inner rust-proof protection ensures clean and safe fluid transport. Its threaded ends conform to ANSI/ASME B1.20.1 standards, providing a secure and leak-resistant seal. The relative softness of the malleable iron enhances thread engagement, contributing to a tight and reliable connection.

Key Features & Applications

• Galvanized malleable iron construction with zinc coating for enhanced corrosion resistance.
• 150-lb class malleable fittings for robust and reliable performance.
• Rated up to 500 PSI at 150°F, suitable for high-pressure systems.
• Threaded ends comply with ANSI/ASME B1.20.1 standards for secure connections.
• Ideal for:
  • Potable water systems
  • Compressed air systems
  • Drainage systems
  • DIY plumbing projects
  • Hot and cold water systems
  • Refrigeration
  • Sprinkler systems
  • Gasoline, diesel, and alcohol transport