Description: characteristic of a structure to resist gradual degradation of its serviceability in a given environment for the design service life; Name: durability
Description: Ability of an item to perform a required function under given conditions of use and maintenance, until the end of useful life ; Name: Durability
Description: NPSH-value required for a drop of 3 % in the total head of the first stage of the pump as a standard basis for use in performance curves; Name: Net positive suction head required for a drop of 3 %