Pumps and Compressors

NATO Supply Group 43: All About Pumps and Compressors

What is it?

NATO Supply Group (NSG) 43, also known as Federal Supply Group (FSG) 43 in the United States, is a standardized classification system for pumps and compressors used in various applications. It categorizes these essential equipment pieces based on their design, function, and intended use.

What does it include?

NSG 43 encompasses a wide range of pumps and compressors, but it excludes certain types specifically designed for individual equipment. Here's a breakdown of what's included:

• Pumps: These mechanical devices use various operating principles to move fluids from one place to another. NSG 43 covers various pump types such as:
  • Centrifugal pumps: Utilize rotating impellers to generate centrifugal force, moving fluids radially outward.
  • Positive displacement pumps: Enclose a fixed volume of fluid and then displace it, forcing it through the system. Examples include piston pumps, gear pumps, and diaphragm pumps.
  • Submersible pumps: Designed to operate while submerged in a liquid, often used in applications like well drilling or wastewater treatment.
• Compressors: These machines increase the pressure of a gas by reducing its volume. NSG 43 includes various compressor types, such as:
  • Reciprocating compressors: Use pistons to compress gas in a cylinder.
  • Rotary screw compressors: Utilize rotating screws to trap and compress gas.
  • Centrifugal compressors: Employ high-speed impellers to increase gas pressure