US 12,460,745 B2
Valve trim apparatus for use with fluid valves
Mohammad Rashid Azmi, Ames, IA (US); and Trevor Stoakes, Bondurant, IA (US)
Assigned to Fisher Controls International LLC, Marshalltown, IA (US)
Filed by Fisher Controls International LLC, Marshalltown, IA (US)
Filed on Mar. 29, 2024, as Appl. No. 18/621,444.
Claims priority of provisional application 63/494,391, filed on Apr. 5, 2023.
Prior Publication US 2024/0337331 A1, Oct. 10, 2024
Int. Cl. F16K 39/04 (2006.01); F16K 1/36 (2006.01); F16K 1/54 (2006.01); F16K 3/24 (2006.01); F16K 3/26 (2006.01); F16K 3/30 (2006.01); F16K 3/32 (2006.01); F16K 39/02 (2006.01); F16K 47/08 (2006.01); F16K 3/02 (2006.01); F16K 3/314 (2006.01); F16K 27/04 (2006.01)
CPC F16K 47/08 (2013.01) [F16K 1/36 (2013.01); F16K 1/54 (2013.01); F16K 3/246 (2013.01); F16K 3/262 (2013.01); F16K 3/30 (2013.01); F16K 3/32 (2013.01); F16K 39/024 (2013.01); F16K 39/04 (2013.01); F16K 3/0209 (2013.01); F16K 3/314 (2013.01); F16K 27/041 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A valve trim apparatus comprising:
a cage having a cylindrical wall defining a central aperture and a plurality of first openings extending between an inner surface of the cage and an outer surface of the cage;
a valve seat to engage the cage; and
a valve plug slidably coupled to the cage and movable relative to the valve seat, the valve plug including:
a sidewall defining a plug cavity and a plurality of throttle ports, the throttle ports radially spaced relative to a longitudinal axis of the valve plug, the throttle ports including throttle flow passageways to provide fluid communication between an inner surface of the throttle ports and an outer surface of the sidewall of the valve plug; and
a plurality of throttle plugs, the throttle plugs positioned in respective ones of the throttle ports and movable relative to the throttle flow passageways to control fluid flow through the throttle flow passageways when the valve plug is sealingly engaged with the valve seat, the throttle plugs coupled to a retaining plate via respective ones of throttle plug stems.