Description: height of the centre of the inlet pressure gauge; Name: height of inlet pressure gauge 
Description: Height of the zero or centre position of the inlet manometer, or other point as defined by the manometer calibration ; Name: Height of the inlet manometer
Description: indication of the minimum flow rate at which the pump can still be operated without problems. related to pump operation at 2,900 rpm; Name: minimum feed flow at 2900 / min