Description: maximum head that a pump can reach; Name: Highest head allowed
Description: Maximum permissible head at which the pump can be continuously operated without suffering damage; Name: Maximum allowable head
Description: Speed that characterizes a pump in terms of its speed, flow rate per impeller eye, i.e. total flow for single-flow impeller, half flow for double-flow impeller, at the best efficiency point and head per stage at maximum impeller diameter ; Name: Specific speed