Description: index relating flow, total head and rotational speed for pumps of similar geometry; Name: specific speed
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
Description: For a given operating resource, the lowest temperature, below which the temperature may not ever fall, of materials or measuring substances below which the resource cannot be operated without permanent changes in its characteristics; Name: Min. work temperature