Importance

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Abstract

Flow directing apparatus for use with fluid regulators are described herein. An example fluid regulator includes a body having a passageway defining an orifice that fluidly couples an inlet and an outlet. A valve plug is disposed within the passageway that moves relative to a valve seat adjacent the orifice. An actuator operatively coupled to the valve plug and the actuator includes a sensing chamber fluidly coupled to the outlet of the passageway. The actuator moves the valve plug relative to the valve seat to control fluid flow through the orifice between the inlet and the outlet in response to the pressure of a process fluid at the outlet. A flow directing member is coupled to the valve plug. The flow directing member having a droop reducing portion to direct fluid flowing through the orifice toward the outlet of the passageway and away from the sensing chamber of the actuator at a first pressure differential across the orifice, and a boost reducing portion to direct fluid flowing toward the sensing chamber of the actuator at a second pressure differential, where the second pressure differential is greater than the first pressure differential.

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First Claim