of lhe situation, otherwise lhe analyst. can find

hi msel ook ng at. huge mass of numbers lhout. begin from. Therefore, lhe challenge develop syst.emat.ic procedures for conceptual analysis so as lhe pattern of numerical results. stepwise proposal for describing t.he fundamen- tals of valve application here.Afler of works characterizing lhe subject., diment.ionless intended lo describe lhe operating behaviour of valves installed elements introduced. It. has long been recognized t.he importance of valve flow characlerislic in predicting steady stale