Teoria e poltica monetrias: Uma viso pessoal sobre uma relao difcil
2004
A system for determining the flow performance of a valve by first measuring certain flow parameters of the valve with the stem fixed in a plurality of different positions between full open and full closed and then calculating a value of flow coefficient for each. The flow parameters of the valve are then measured with the stem dynamically moving under a plurality of different flow conditions. Mathematical relationships are derived in accordance with certain procedures for calculating the flow rate of the valve under each of the different flow conditions.
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