Abstract

A cylindrical valve assembly, including: a housing defining a port, an interior volume, and an interior surface; a lip structure disposed about the periphery of the port, wherein the lip structure protrudes into the interior volume past the interior surface of the housing; and a valve door defining an exterior surface disposed concentrically within the housing, wherein the valve door is configured to move from an open configuration in which it does not obstruct the port to a closed configuration in which it does obstruct the port, and wherein, when the valve door is in the closed configuration, the exterior surface of the valve door is in contact with the lip structure and not the interior surface of the housing. Optionally, the lip structure is provided by an insert structure that is disposed through the port. Optionally, an end of the insert structure opposite the lip structure includes a velocity stack. Optionally, a plurality of dimples are manufactured into the exterior surface of the valve door.

IPC Classes  ?

• F16K 5/04 - Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfacesPackings therefor
• F16K 13/02 - Other constructional types of cut-off apparatusArrangements for cutting-off with both sealing faces shaped as small segments of a cylinder and the moving member pivotally mounted
• F02D 9/16 - Throttle valves specially adapted thereforArrangements of such valves in conduits having slidably-mounted valve-membersThrottle valves specially adapted thereforArrangements of such valves in conduits having valve-members movable longitudinally of conduit the members being rotatable
• B23P 15/00 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass