Boots – shoes – and leggings
Patent
1990-10-31
1992-04-21
Lall, Parshotam S.
Boots, shoes, and leggings
137155, 73 3, 73155, 73168, G01F 2500
Patent
active
051074419
ABSTRACT:
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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Lall Parshotam S.
Melnick S. A.
Otis Engineering Corporation
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