Hydraulic Institute (HI) Definition

What is the Hydraulic Institute?

The Hydraulic Institute is an association of pump industry manufacturers in North America that develops and publishes the most frequently cited pump standards for the water and wastewater applications.

Most centrifugal pumps procured for water or wastewater applications – including those in the municipal, HVAC, plumbing, industrial, and fire-protection markets – are designed in accordance with Hydraulic Institute Standards. Some of the most-used HI Standards include: