Abstract: Apparatus for noise reduction in valves are disclosed herein. An example valve disclosed herein includes a valve body defining a fluid passageway between an inlet and an outlet, a plug, and a cage in the fluid passageway. The plug is disposed in the cage. The plug is moveable in the cage to control fluid flow through the fluid passageway. The cage includes an inner wall having first openings, an outer wall having second openings, the outer wall disposed coaxially around the inner wall, and an insert having third openings. The insert is disposed between the inner wall and the outer wall.

Abstract: Methods, apparatus, systems, and articles of manufacture are disclosed for a valve plug apparatus for use with control valves. An example valve plug apparatus disclosed herein an upper plug segment, a middle plug segment, and a lower plug segment, the middle plug segment positioned between the upper plug segment and the lower plug segment, the upper plug segment, the middle plug segment and the lower plug segment defining an overall length of the valve plug, the middle plug segment removably coupled to the upper plug segment and the lower plug segment.

Abstract: A valve plug assembly includes a valve plug base, a valve plug tip, and a clamp that removably couples the valve plug tip to the valve plug base. The valve plug base includes a base body portion arranged for attachment to the valve stem and a base mating portion coupled to the base body portion. The valve plug tip has a tip body portion and a tip mating portion coupled to the tip body portion, the tip body portion having a sealing surface arranged to sealingly engage the valve seat. The clamp includes a clamp bore sized to receive at least a portion of the base mating portion and at least a portion of the tip mating portion.

Abstract: A valve plug assembly includes a valve plug base, a valve plug tip, and a clamp that removably couples the valve plug tip to the valve plug base. The valve plug base includes a base body portion arranged for attachment to the valve stem and a base mating portion coupled to the base body portion. The valve plug tip has a tip body portion and a tip mating portion coupled to the tip body portion, the tip body portion having a sealing surface arranged to sealingly engage the valve seat. The clamp includes a clamp bore sized to receive at least a portion of the base mating portion and at least a portion of the tip mating portion.

Abstract: A thermally compensated valve trim component for a fluid flow control device is provided. The valve trim component includes a base and a sleeve coupled to the base. The base is formed of a first material having a first thermal expansion coefficient, while the sleeve is formed of a second material having a second thermal expansion coefficient different from the first thermal expansion coefficient. The valve trim component further includes a thermal compensating apparatus arranged within a gland defined between the base and the sleeve. The thermal compensating apparatus is formed of a third material having a third thermal expansion coefficient different from the first and second thermal expansion coefficients, such that the thermal compensating apparatus minimizes a resultant thermal expansion differential of the valve trim component.

Abstract: A fluid pressure reduction device is provided. The fluid pressure reduction device includes a body and a diffuser. The body defines an inlet, an outlet, and a fluid passageway extending between the inlet and the outlet. The body is made of a first material having a first hardness. A seating area is defined within the body. The diffuser is removably coupled to the seating area and disposed within the fluid passageway of the body. The diffuser defines at least one flowpath for reducing a pressure of a fluid flowing through the fluid passageway. The diffuser includes a second material having a second hardness greater than the first hardness of the first material.

Abstract: A thermally compensated valve trim component for a fluid flow control device is provided. The valve trim component includes a base and a sleeve coupled to the base. The base is formed of a first material having a first thermal expansion coefficient, while the sleeve is formed of a second material having a second thermal expansion coefficient different from the first thermal expansion coefficient. The valve trim component further includes a thermal compensating apparatus arranged within a gland defined between the base and the sleeve. The thermal compensating apparatus is formed of a third material having a third thermal expansion coefficient different from the first and second thermal expansion coefficients, such that the thermal compensating apparatus minimizes a resultant thermal expansion differential of the valve trim component.

Abstract: A fluid pressure reduction device is provided. The fluid pressure reduction device includes a body and a diffuser. The body defines an inlet, an outlet, and a fluid passageway extending between the inlet and the outlet. The body is made of a first material having a first hardness. A seating area is defined within the body. The diffuser is removably coupled to the seating area and disposed within the fluid passageway of the body. The diffuser defines at least one flowpath for reducing a pressure of a fluid flowing through the fluid passageway. The diffuser includes a second material having a second hardness greater than the first hardness of the first material.

Abstract: Valve trim apparatus having ceramic trim with protected shut-off surfaces are described. An example valve trim apparatus includes a valve seat composed of a non-ceramic material and having a sleeve insert composed of a ceramic material. A closure member has a primary flow control member and a secondary flow control member. The secondary flow control member is composed of the ceramic material and fitted within a cavity of the closure member. The primary flow control member sealingly engages the non-ceramic material of the valve seat and the secondary flow control member moves within an aperture of the sleeve insert to modulate a fluid flow through the valve seat as the primary flow control member disengages from the non-ceramic material of the valve seat.