Hydraulic Institute Engineering Data Book !link! [ 2026 Update ]

The Hydraulic Institute (HI) Engineering Data Book, available through the digital HI Data Tool and Engineering Data Library

Historical Context and Evolution

The origins of the Hydraulic Institute date back to 1917, when pump manufacturers came together to standardize dimensions and testing methods. The first compilation of engineering data emerged from a growing recognition that the industry lacked a single, trusted source for critical constants, conversion factors, and empirical relationships. Over the decades, the Data Book has evolved through numerous editions, each reflecting advances in materials, computational methods, and energy efficiency standards. hydraulic institute engineering data book

• Metric Conversions: Comprehensive dual-unit data (Imperial/Metric) to support global engineering projects.
• Updated Material Specs: Reflecting modern manufacturing materials and chemical compatibility standards.
• Software Integration: Many of the charts found in the book (specifically friction loss and viscosity corrections) are now algorithmically integrated into pump selection software, but the book remains the source code for these calculations.

This article provides a deep dive into the history, structure, technical content, and practical applications of the Hydraulic Institute Engineering Data Book. This article provides a deep dive into the

• What you’ll find: Viscosity, density, specific heat, vapor pressure, and bulk modulus from freezing to boiling points.
• Why it matters: Correcting for temperature is critical in hot water applications (e.g., boiler feed) where water density drops significantly, affecting power consumption.