Hydraulic Institute Engineering | Data Book =link=

The Data Book established a uniform methodology based on empirical testing and fluid dynamic theory. It ensures that when an engineer calculates the head generated by a pump or the friction loss in a pipe, the result is consistent regardless of the manufacturer. It is often referenced in legal contracts and engineering specifications as the default standard for dispute resolution.

Few topics in pump engineering generate more heated arguments than how much NPSH margin is enough. The Data Book provides a famous table: recommended margins based on service, fluid type, and risk tolerance. It doesn’t end the debate — but it gives you a defensible, industry-backed starting point. That’s gold in a lawsuit or after a catastrophic cavitation failure. hydraulic institute engineering data book

However, the core mission remains unchanged: to provide trustworthy, consensus-driven data that ensures pumping systems are safe, efficient, and reliable. The Data Book established a uniform methodology based

Vapor pressure data for various compounds, including cryogenics like liquid hydrogen and helium. Few topics in pump engineering generate more heated

Comprehensive charts on friction factors for various piping materials—including steel, iron, and plastic—graphically displayed on fold-out pages for ease of use. It includes specific data for water friction loss and nozzle friction loss.

Founded in 1917, HI is a global authority on pumps and pumping systems. Its standards and publications are used in over 100 countries. The Engineering Data Book is one of its flagship publications, updated continuously to reflect current technology and research.