Description: Mean time that elapses between two device failures; Name: MTBF
Description: expectation of the operating time between failures; Name: mean time between failures (MTBF)
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