Category Archives: HI

ANSI/HI 14.6-2011

Rotodynamic Pumps for Hydraulic Performance Acceptance Tests (ANSI/HI 14.6)

Hydraulic Institute / 09-Aug-2011 / 90 pages

This standard covers hydraulic performance tests for acceptance of rotodynamic pumps (centrifugal, mixed flow, and axial flow pumps. The Centrifugal Pump Test Standard (ANSI/HI 1.6-2000) and the Vertical Pump Test Standard (ANSI/HI 2.6-2000) have been superseded by this standard. The new test standard contains significant updates from the 2000 version(s) and is considered the new global reference for testing centrifugal and vertical pumps. ANSI/HI Standard 14.6 is intended to be used for pump acceptance testing at

Industry experience shows that it is very difficult to perform measurements accurate enough to satisfy the acceptance requirements in this standard when testing is performed in the field.

Information in the standard may be applied to pumps of any size and to any pumped liquids behaving as clear water.

ANSI/HI 14.6-2011 includes six (6) acceptance grades instead of two (2) that were included in the 2000 versions. Tolerance bands have been developed that will be of interest to those concerned with energy efficiency. Acceptance grades with bilateral tolerances and acceptance grades with unilateral tolerances are defined. Default acceptance grades based on the purchaser?s application are available to guide the pump community (used when there is no specific test acceptance grade in the contract document). The standard contains tolerances for pumps with low horsepower input.

The standard features an updated layout of the test arrangement and appendices containing information regarding measuring equipment, string tests, and discrete test parameters. New graphics and content provide readers with insight into NPSH testing. In addition, it contains special test techniques related to model testing to predict performance of pumps to large to test by conventional means.

Ordering and availability

This publication is available only in PDF edition.

ANSI/HI 10.1-10.5-2010

American National Standard for Air-Operated Pumps for Nomenclature, Definitions, Application, and Operation

This standard was published by HI (Hydraulic Institute). It has 34 pages.

This new standard is for air operated pumps and includes those positive displacement reciprocating pumps used for general fluid transfer, which are driven by means of a compressed gas (usually air) from an outside source. The pump may be designed with a single diaphragm or double diaphragms connected to a reciprocating shaft in which one side of the diaphragm is in contact with the liquid being pumped and the other side is in contact with the compressed gas. The standard includes the following sections:

  • Types, configurations, and nomenclature
  • Definitions
  • Design and Application
  • Installation, Operation, and Maintenance

Ordering information and availability

Available as PDF (download) file.