Description: Head for the feed flow Q = 0; Name: Zero head
Description: Hoisting height for the feed flow Q = 0; Name: Zero-delivery height
Description: the pressure whose value is equal to the algebraic difference between the absolute pressure and the atmospheric pressure. To this end, the overpressure for a pressure room can, for example, be negative with underpressure or under vacuum; Name: Max. overpressure of the shaft seal