Patent ID: 9206909
Filing Date: 2015-12-08
Classification: F16K,Y10T

Abstract:
1. An anti-rotation assembly for use with a valve, the anti-rotation assembly comprising: a cage to be disposed inside a valve body, the cage defining a first aperture having a substantially circular cross-section; a plug disposed within the first aperture of the cage throughout a stroke of the valve, an interaction between the plug and the first aperture to guide movement of the plug throughout the stroke of the valve, the plug having a substantially circular cross-section; an anti-rotation retainer coupled to the plug, the anti-rotation retainer having an exterior surface defining a non-circular cross-section and an interior surface at least partially surrounding the plug; an anti-rotator coupled to an end of the cage, the anti-rotator defining a second aperture having a non-circular cross-section, an engagement between the anti-rotator and the exterior surface to reduce rotation of the anti-rotation retainer and the plug relative to a longitudinal axis of the anti-rotation retainer; a seal coupled to at least one of the plug or the anti-rotation retainer, the seal to sealingly engage the cage to substantially prevent fluid flow between the seal and the cage; and a transverse bore extending through the anti-rotation retainer and the plug, a fastener to be disposed in the transverse bore to couple the plug and the anti-rotation retainer, the anti-rotation retainer defining an opening of the transverse bore, wherein the anti-rotation retainer defines a groove into which the seal is disposed, wherein the transverse bore intersects the groove at the opening of the transverse bore.