Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1996-03-11
1997-08-05
Ferensic, Denise L.
Fluid handling
Line condition change responsive valves
Direct response valves
138 46, F16K 1500
Patent
active
056532571
ABSTRACT:
A flow control limiter for limiting the volumetric flow rate of a fluid flowing through a line. A stator is matingly seated in the line, and includes a sleeve portion and a curved portion extending outwardly and upstream from the sleeve portion. The stator further includes a centrally disposed neck portion connected to the sleeve portion. A shuttle is slidably fitted onto the neck portion such that an annular space is formed between the shuttle and the curved portion of the stator for the flow of fluid therethrough, the shuttle being slidable between an upstream position and a downstream position. A spring is disposed between the stator and the shuttle to bias the shuttle toward the upstream position. The surface of the curved portion of the stator is configured so that when fluid flow causes the shuttle to move downstream at a constant rate against the bias of the spring, the size of the annular space decreases at a decreasing rate to maintain a substantially constant maximum volumetric flow rate of fluid through the line.
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Dresser Industries
Farid Ramyar M.
Ferensic Denise L.
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