Description: the head of a pump at the point of best efficiency; Name: head at optimum efficiency
Description: Total head developed by the pump at a rate of flow corresponding to the best efficiency; Name: Optimum head
Description: The operating overpressure PS1+ is the maximum value of the operating overpressure defined from a safety point of view by the manufacturer of the system for the various components in relation to the atmospheric pressure (1 bar) at the maximum permissible temperature TS1; Name: Max. permissible overpressure PS1+ at TS1, room1