Association News

Hydraulic Institute releases updated Nozzleloads Standard.

Press Release Summary:

Oct 12, 2011 - Applied Nozzleloads Standard ANSI/HI 9.6.2−2011 includes recommendations for assessment of applied nozzle loads for variety of pumps, including horizontal end suction single-stage, vertical inline single-stage, axial split case single and 2-stage, and vertical turbine short set pumps. Standard also contains additional explanatory information regarding criteria for pump nozzle loading allowances and more detail regarding material requirements for pump casings and hold-down bolts.

Pump Systems Matter - Parsippany, NJ

Original Press Release

Hydraulic Institute Releases Updated Nozzleloads Standard (ANSI/HI 9.6.2)

Press release date: Aug 01, 2011

Parsippany NJ - The Hydraulic Institute announces the release of the updated Applied Nozzleloads Standard (ANSI/HI 9.6.2 − 2011). This revised standard contains many revisions and added material. The standard is available on the HI eStore for $75.00.

The new applied nozzleloads standard includes recommendations for assessment of applied nozzle loads for the following pumps types:
o Horizontal end suction single-stage (ANSI/ASME B73.1, B73.3, and B73.5M)
o Vertical in line single-stage (ANSI/ASME B73.2)
o Axial split case single and two-stage
o Vertical turbine short set pumps

The updated standard contains additional explanatory information regarding the criteria for pump nozzle loading allowances and includes more detail regarding the material requirements for pump casings and hold-down bolts. The revised standard also contains new and improved graphics to support the text and enhance user understanding. Also, the equations and methodology are explained using more sample problems and greater educational content.

Gregg Romanyshyn, HI Technical Director, stated, "The committee planned to re-issue this standard with only a few minor updates, but as they began their review, they discovered several areas that needed revisions. Material codes were added as well. It is certainly beneficial for any pump user dealing with the assessment of applied nozzle loads in any of the pump types above to add this to their pump standard library".

The Applied Nozzleloads Standard (9.6.2 − 2011) is available at the HI eStore for $75.00. HI Members enjoy a 25% discount. Contact for further information or assistance ordering.

Chair, Fred Walker, Weir Floway and Vice-chair, Lucian Dobrot, TACO, Inc. led the committee that updated this standard.

HI Pump Standards are reliable, widely accepted references for anyone involved in pumps, including users, consultants, contractors, construction firms, manufacturers of pumps, seals, motors, instrumentation, controls, and pump software developers and systems integrators. HI periodically introduces new Standards based on industry needs. HI's complete library of ANSI/HI standards for the pump industry is user-friendly, and available in both electronic and print formats at the HI e-Store:, or by calling the Hydraulic Institute's purchasing line at: 973. 267. 9700 Ext 118.

About the Hydraulic Institute: The Hydraulic Institute is the largest association of pump producers and suppliers to the pump industry in North America and a global authority on pumps and pumping systems. Its mission is to serve as a forum for the exchange of industry information, while providing value-added services to member companies and pump users worldwide. For more information about the Hydraulic Institute, its member companies and Standards Partners visit and