Description: duration of operation between consecutive failures of a functional unit under given conditions; Name: otbf
Description: Operating time between consecutive failures ; Name: Operating time between failures
Description: measure of the increase in the liquid to be pumped, water, on a pipe connected vertically to the pump when the flow rate is zero. related to the operation of the pump at 1,450 rpm with the current impeller size; Name: pump shut-off head for actual impeller diameter at 1450/min