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Red 1 1/2" x 50' Medium Duty Discharge Hose

1 1/2" Hose Male Couplings

  • Inside diameter of a male coupling - 1 1/2" inches
  • Outside diameter of a male NH / NST coupling - 1.99 inches (9 Threads per inch)
  • Outside diameter a male NPSH or NPT coupling - 1.87 inches (11.5 Threads per inch)
Blue 2" x 50' Lightweight Discharge Hose

2" Hose Male Couplings

  • Inside diameter of a male coupling - 2 inch
  • Outside diameter of a male NH / NST coupling - 2.51 inches (8 Threads per inch)
  • Outside diameter a male NPSH or NPT coupling - 2.35 inches (11.5 Threads per inch)

Note - 2 inch NH or NST is very rare. If the outside diameter of male coupling is approximately two inches, you need 1 1/2 inch NH or NST.

White 2" x 50' Single Jacket Discharge Hose

2" Hose Male Couplings

  • Inside diameter of a male coupling - 2 inch
  • Outside diameter of a male NH / NST coupling - 2.51 inches (8 Threads per inch)
  • Outside diameter a male NPSH or NPT coupling - 2.35 inches (11.5 Threads per inch)

Note - 2 inch NH or NST is very rare. If the outside diameter of male coupling is approximately two inches, you need 1 1/2 inch NH or NST.