Special Volume Pricing Available FREE Shipping Over $99 on US Lower 48 US Ground Orders Strong Supply Chain

Black Unions (Brass Seat)

Black Unions (Brass Seat)


Pipe Fittings Black Unions Malleable Iron 300LB NPT UL/FM

  • Class 150 black pipe fittings are UL Listed and FM Approved at 300 psi
  • Class 300 black pipe fittings are UL Listed
  • Hot-dipped galvanized pipe fittings are certified to; NSF/ANSI 61-4 and California AB1953 Lead Free
  • Malleable castings conform to ASTM A197, ASME B16.3, ASME B16.14 and ASME B16.39
  • Hot-dipped galvanized fittings conform to ASTM A153
  • NPT threads on all fittings for pipes conform to ASME B1.20.1
  • Independent lab verification that fittings meet applicable chemical & physical properties
  • Manufacturing facilities are ISO 9001:2008 and ISO 14001. Fittings are 100% air tested. Canadian Registration Numbers (CRN) available