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A volume booster for a fluid flow control device comprises a supply path for supplying a fluid boost to facilitate actuation of an actuator in a first direction, and an exhaust path for enabling controlled exhaust to facilitate actuation of the actuator in a second direction. The supply path defines

A volume booster for a fluid flow control device comprises a supply path for supplying a fluid boost to facilitate actuation of an actuator in a first direction, and an exhaust path for enabling controlled exhaust to facilitate actuation of the actuator in a second direction. The supply path defines a supply resistance that is set by the geometry of a supply trim component. The exhaust path includes an exhaust resistance that is set by the geometry of an exhaust trim component. The supply and exhaust trim components are independently removable and replaceable with replacement components to customize the exhaust and supply resistances, and therefore, the exhaust and supply capacities for specific applications.

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1. A fluid flow control device, comprising: a body comprising an inlet port, a common port, and a discharge port;a supply path extending between the inlet port and the common port;an exhaust path extending between the common port and the discharge port;a supply port disposed within the body along th

1. A fluid flow control device, comprising: a body comprising an inlet port, a common port, and a discharge port;a supply path extending between the inlet port and the common port;an exhaust path extending between the common port and the discharge port;a supply port disposed within the body along the supply path between the inlet port and the common port;a control element disposed within the body and comprising a supply plug, an exhaust plug, and a stem connecting the supply plug and the exhaust plug, the control element adapted for displacement between a closed position whereby the supply plug is in sealing engagement with the supply port to close the supply path, and an open position whereby the supply plug is spaced from the supply port to open the supply path;a diaphragm assembly defining an exhaust port and disposed along the exhaust path between the common port and the discharge port, the diaphragm assembly comprising at least one diaphragm adapted for displacement between a first position, wherein the exhaust port is in sealing engagement with the control element to close the exhaust path, and a second position, wherein the exhaust port is spaced from the exhaust plug of the control element to open the exhaust path;a supply trim component removably attached to the body and defining a supply passage disposed along the supply path between the inlet port and the supply port; andan exhaust trim component disposed within the body and defining a control opening and an exhaust passage, the control opening configured to receive a portion of the control element, and the exhaust passage extending axially through the exhaust trim component and along the exhaust flow path between the common port of the body and the exhaust port of the diaphragm assembly, the exhaust passage having a first exhaust fluid flow resistance,the exhaust trim component removably attached to the body thereby enabling the exhaust trim component to be removed and substituted with another exhaust trim component having an exhaust passage with a second exhaust fluid flow resistance that is different than the first exhaust fluid flow resistance. 2. The device of claim 1, wherein the exhaust trim component comprises an exhaust bushing threaded into the body and the exhaust passage comprises at least one bore extending axially through the exhaust bushing. 3. The device of claim 1, wherein the exhaust trim component is selected from a plurality of exhaust trim components, each of the plurality of exhaust trim components defining a distinct exhaust passage having a distinct exhaust fluid flow resistance. 4. The device of claim 3, wherein each exhaust passage of the plurality of exhaust trim components comprises at least one bore. 5. The device of claim 3, wherein each first exhaust passage of the plurality of exhaust trim components comprises at least one of a distinct cross-sectional dimension and a distinct longitudinal dimension. 6. The device of claim 1, wherein the exhaust trim component defines a plurality of exhaust passages, the plurality of exhaust passages including the exhaust passage and at least one additional exhaust passage, each of the plurality of exhaust passages comprising a cylindrical bore extending axially through the exhaust trim component. 7. The device of claim 1, wherein the supply trim component is selected from a plurality of supply trim components, each of the plurality of supply trim components defining a distinct supply passage having a distinct supply fluid flow resistance. 8. The device of claim 7, wherein each supply passage of the plurality of supply trim components comprises at least one bore. 9. The device of claim 7, wherein each supply passage of the plurality of exhaust trim components comprises at least one of a distinct cross-sectional dimension and a distinct longitudinal dimension. 10. A fluid flow control device, comprising: a body comprising an inlet port, a common port, and a discharge port;a supply path extending between the inlet port and the common port;an exhaust path extending between the common port and the discharge port;a supply port disposed within the body along the supply path between the inlet port and the common port;an exhaust port disposed within the body along the exhaust path between the common port and the discharge port;a control element disposed within the body and comprising a plug adapted for displacement between a closed position in sealing engagement with the supply port to close the supply path, and an open position spaced from the supply port to open the supply path;an exhaust trim component removably attached to the body and defining a control opening and an exhaust passage, the exhaust passage extending axially through the exhaust trim component and disposed along the exhaust path between the common port and the exhaust port, the exhaust passage having a first exhaust fluid flow resistance, the first exhaust fluid flow resistance pre-selected from a plurality of distinct exhaust fluid flow resistances thereby customizing an exhaust capacity of the fluid flow control device for a specific application; anda supply trim component removably attached to the body and defining a supply passage disposed along the supply path between the inlet port and the supply ort the supply passage having a second fluid flow resistance, the second fluid flow resistance pre-selected from a plurality of distinct supply fluid flow resistances to customize the fluid flow control device for a specific application. 11. The device of claim 10, wherein the first exhaust fluid flow resistance of the exhaust passage is a function of at least one of a cross-sectional dimension of the exhaust passage in the exhaust trim component and a longitudinal dimension of the exhaust passage trim component. 12. The device of claim 10, wherein the exhaust trim component comprises an exhaust bushing threaded into the body and the exhaust passage comprises at least one cylindrical bore extending axially through the exhaust bushing. 13. The device of claim 10, wherein the second fluid flow resistance of the supply passage is a function of at least one of a cross-sectional dimension of the supply passage in the supply trim component and a longitudinal dimension of the supply passage in the supply trim component. 14. The device of claim 10, wherein the supply trim component comprises a supply bushing threaded to the body and the supply passage comprises at least one cylindrical bore extending through the supply bushing. 15. The device of claim 10, further comprising a diaphragm assembly defining the exhaust port and being disposed along the exhaust path between the exhaust passage of the exhaust trim component and the discharge port of the body, the diaphragm assembly comprising at least one diaphragm adapted for displacement between a first position wherein the exhaust port is in sealing engagement with the control element to close the exhaust path, and a second position wherein the exhaust port is spaced from the control element to open the exhaust path. 16. A fluid flow control device, comprising: a body comprising an inlet port, a common port, and a discharge port;a supply path extending between the inlet port and the common port;an exhaust path extending between the common port and the discharge port;a supply port disposed within the body along the supply path between the inlet port and the common port;an exhaust port disposed within the body along the exhaust path between the common port and the discharge port;a control element disposed within the body and comprising a plug adapted for displacement between a closed position in sealing engagement with the supply port to close the supply path, and an open position spaced from the supply port to open the supply path;an exhaust trim component removably attached to the body and defining a control opening and an exhaust passage, the control opening configured to receive a portion of the control element, and the exhaust passage extending axially through the exhaust trim component and along the exhaust path between the common port and the exhaust port;a first selected set of dimensional parameters for the exhaust passage, the first selected set of dimensional parameters pre-selected from a first plurality of sets of distinct dimensional parameters, thereby customizing an exhaust capacity of the fluid flow control device for a specific application;a supply trim component removably attached to the body and defining a supply passage along the supply path between the inlet port and the supply port; anda second selected set of dimensional parameters for the supply passage, the second selected set of dimensional parameters pre-selected from a second plurality of sets of distinct dimensional parameters, thereby customizing a supply capacity of the fluid flow control device for a specific application. 17. The device of claim 16, wherein each set of the first plurality of sets of dimensional parameters includes at least one of a distinct cross-sectional dimension of the exhaust passage and a distinct longitudinal dimension of the exhaust passage. 18. The device of claim 16, wherein each set of the first plurality of sets of dimensional parameters defines at least one of a distinct exhaust fluid flow resistance for the exhaust passage and a distinct exhaust capacity for the exhaust passage. 19. The device of claim 16, wherein the exhaust trim component comprises an exhaust bushing threaded into the body and the exhaust passage comprises at least one cylindrical bore extending axially through the exhaust bushing. 20. The device of claim 16, wherein each set of the second plurality of sets of dimensional parameters defines at least one of a distinct supply fluid flow resistance for the supply passage and a distinct capacity for the supply passage. 21. The device of claim 16, wherein the supply trim component comprises a supply bushing threaded to the body and the supply passage comprises at least one cylindrical bore extending through the supply bushing. 22. The device of claim 16, further comprising a diaphragm assembly defining the exhaust port and being disposed along the exhaust path between the exhaust passage of the exhaust trim component and the discharge port of the body, the diaphragm assembly comprising at least one diaphragm adapted for displacement between a first position wherein the exhaust port is in sealing engagement with the control element to close the exhaust path, and a second position wherein the exhaust port is spaced from the control element to open the exhaust path. 23. A fluid flow control device, comprising: a body comprising an inlet port, a common port, and a discharge port;a supply path extending between the inlet port and the common port;an exhaust path extending between the common port and the discharge port;a supply port disposed within the body along the supply path between the inlet port and the common port;an exhaust port disposed within the body along the exhaust path between the common port and the discharge port;a control element disposed within the body and comprising a plug adapted for displacement between a closed position in sealing engagement with the supply port to close the supply path, and an open position spaced from the supply port the open the supply path;an exhaust trim component removably attached to the body and defining a control opening and an exhaust passage, the control opening configured to receive a portion of the control element, and the exhaust passage extending axially through the exhaust trim component and disposed along the exhaust path between the common port and the exhaust port, the exhaust trim component selected from a first exhaust trim component and a second exhaust trim component, the first exhaust trim component defining a first exhaust passage having a first exhaust fluid flow resistance, the second exhaust trim component defining a second exhaust passage having a second exhaust fluid flow resistance that is different than the first exhaust fluid flow resistance; anda supply trim component removably attached to the body and defining a supply passage disposed along the supply flow path between the inlet port and the supply port. 24. The device of claim 23, wherein the first exhaust passage comprises at least one bore extending axially through the first exhaust trim component and the second exhaust passage comprises at least one bore extending axially though the second exhaust trim component. 25. The device of claim 23, wherein the first exhaust passage comprises a first cross-sectional dimension and the second exhaust passage comprises a second cross-sectional dimension that is different than the first cross-sectional dimension. 26. The device of claim 23, wherein the first exhaust passage comprises a first longitudinal dimension and the second exhaust passage comprises a second longitudinal dimension that is different than the first longitudinal dimension. 27. The device of claim 23, wherein the first and second exhaust trim components each comprise an exhaust bushing adapted to be threaded into the body of the fluid flow control device. 28. The device of claim 23, wherein the supply trim component is selected from a first supply trim component and a second supply trim component, the first supply trim component defining a first supply passage having a first supply fluid flow resistance, the second supply trim component defining a second supply passage having a second supply fluid flow resistance that is different than the first supply fluid flow resistance. 29. The device of claim 28, wherein the first supply passage comprises at least one bore through the first supply trim component and the second supply passage comprises at least one bore though the second supply trim component. 30. The device of claim 28, wherein the first supply passage comprises a third cross-sectional dimension and the second supply passage comprises a fourth cross-sectional dimension that is different than the third cross-sectional dimension. 31. The device of claim 28, wherein the first supply passage comprises a third longitudinal dimension and the second supply passage comprises a fourth longitudinal dimension that is different than the third longitudinal dimension. 32. The device of claim 28, wherein the first and second supply trim components each comprise a supply bushing adapted to be threaded into the body of the fluid flow control device. 33. The device of claim 23, further comprising a diaphragm assembly defining the exhaust port and being disposed along the exhaust path between the exhaust passage of the exhaust trim component and the discharge port of the body, the diaphragm assembly comprising at least one diaphragm adapted for displacement between a first position wherein the exhaust port is in sealing engagement with the control element, thereby closing the exhaust path, and a second position wherein the exhaust port is spaced from the control element, thereby opening the exhaust path. 34. A method of configuring a fluid flow control device comprising a volume booster for a specific application, the volume booster comprising a body, a supply path, an exhaust path, a supply port, an exhaust port, and a control element, the body including an inlet port, a common port, and a discharge port, the supply path extending from an inlet port, through the supply port, and to the common port, the exhaust path extending from the common port, through the exhaust port, and to the discharge port, the supply port disposed within the body along the supply path between the inlet port and the common port, the exhaust port disposed within the body along the exhaust path between the common port and the discharge port, and the control element disposed within the body and comprising a plug adapted for displacement between a closed position in sealing engagement with the supply port to close the supply path, and an open position spaced from the supply port to open the supply path, the method comprising: determining a desired supply capacity for the supply path;selecting a supply trim component from a plurality of supply trim components based on the desired supply capacity for the supply flow path, each of the plurality of supply trim components defining a supply passage with a distinct supply fluid flow resistance, such that a supply capacity of the volume booster can be customized for the specific application;determining a desired exhaust capacity for the exhaust path;selecting an exhaust trim component from a plurality of exhaust trim components based on the desired exhaust capacity for the exhaust path, each of the plurality of exhaust trim components defining a control opening and an exhaust passage that extends axially through the exhaust trim component and has a distinct exhaust fluid flow resistance, such that an exhaust capacity of the volume booster can be customized for the specific application;removably installing the selected exhaust trim component into the body of the volume booster at a location along the exhaust path between the common port and the exhaust port; andremovably installing the selected supply trim component into the body of the volume booster at a location along the supply path between the inlet port and the supply port. 35. The method of claim 34, wherein selecting the supply trim component comprises selecting a supply trim component having a passage that comprises at least one bore of a specific cross-sectional dimension to accommodate the desired supply capacity. 36. The method of claim 34, wherein selecting the supply trim component comprises selecting a supply trim component having a passage that comprises at least one bore of a specific longitudinal dimension to accommodate the desired supply capacity. 37. The method of claim 34, wherein selecting the exhaust trim component comprises selecting an exhaust trim component having a passage comprising at least one bore of a specific cross-sectional dimension to accommodate the desired exhaust capacity. 38. The method of claim 34, wherein selecting the exhaust trim component comprises selecting an exhaust trim component having a passage that comprises at least one bore of a specific longitudinal dimension to accommodate the desired exhaust capacity.