If you are asking, what is the unit " kPa " ? Then that is kilopascals; a unit of pressure. KPa is sometimes used in fluid dynamics to describe hydraulic head. The preferred unit would be a unit of length; eg. Meters. This is because the pressure would depend not only on the height of the fluid but also the density. A fluid other than pure water has a different density than water and so would have a different pressure at the same height.
