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Engineers integrate the data from the HI Engineering Data Book into several critical workflows:
In the world of fluid handling, precision is not merely a goal—it is a requirement for safety, efficiency, and economic viability. For over a century, the Hydraulic Institute (HI) has served as the authoritative voice for pump manufacturers and users in North America and beyond. Central to its mission of education and standardization is the .
These laws allow engineers to predict the performance of a pump if the motor speed is changed (e.g., using a Variable Frequency Drive) or if the impeller is trimmed.
: Features interactive system curves, variable-speed pump curves, and parallel pump curves to help users visualize system behavior.
For over 50 years, the Engineering Data Book has provided the foundational data used to solve complex problems in hydraulic engineering. It is frequently cited as a primary source for critical calculations, such as determining , pipe diameters, and discharge rates.
Comprehensive formulas and charts for pipe friction loss, velocity calculations, and pipe sizing to ensure optimal piping design.
The is one of the most authoritative reference manuals for fluid mechanics, piping system design, and centrifugal pump selection. Published by the Hydraulic Institute (HI), this comprehensive resource bridges theoretical physics and practical engineering applications.
Field experience repeatedly shows that the root cause of pump failure is not mechanical defect but incorrect application. Pumps run dry, cavitate, operate far from best efficiency point (BEP), or suffer from chronic motor overload. The HI Engineering Data Book equips professionals to ask and answer: What is my system curve? What is my NPSH available? How will viscosity change my head and flow?
From its early days as a printed manual to its modern incarnation as an advanced digital tool, the has continuously adapted to serve the engineering community for over half a century. The transition to the free HI Engineering Data Library and HI Data Tool ensures that this legacy of peer-reviewed, practical knowledge will serve the next generation of engineers for another 50 years.
In the field of fluid mechanics and mechanical engineering, few documents hold as much pragmatic authority as the Hydraulic Institute Engineering Data Book . For decades, it has functioned as the "pump engineer’s bible," bridging the gap between theoretical hydraulics and the practical realities of industrial pump application. While the Hydraulic Institute (HI) publishes various standards (ANSI/HI standards) regarding testing and design, the Data Book is distinct in its function as a repository of reference data and calculation methods required for day-to-day engineering decisions.
Ready-to-use tables showing friction loss per 100 feet of pipe based on flow rate (GPM) and pipe size.
While all engineering data books have value, the HI Engineering Data Book occupies a distinct niche:
Pipe, valve, and fitting pressure drop data.