ANSI Standard

ANSI (American National Standards Institute) A022

This pump standard evolved from the American Voluntary Standard (AVS) that was first proposed by the Manufacturing Chemists Association in the late nineteen fifties and adopted in 1963.

It is a set of standards that describes the envelope dimensions of a back pull out, centrifugal pump.

In recent years there is talk about combining the ANSI standard with the API (American Petroleum Institute) standard to make one overall US standard.


  • ANSI Pump, A023
  • ANSI Specifications, A024