Horsepower (hp)

Work a pump performs while moving a determined amount of liquid at a given pressure.

  1. Hydraulic (water) horsepower (Whp) : pump output measured in whp.
  2. Brake horsepower (Bhp) : the lowest continuous flow at which a manufacturer will guarantee a pump’s performance.

Source: Handbook of water and wastewater treatment plant operations

Wikipedia:  https://en.wikipedia.org/wiki/Horsepower