Patent ID: 8500092
Filing Date: 2013-08-06
Classification: F16K,G05D,Y10T

Abstract:
1. A fluid regulating device comprising: a valve body defining an inlet, an outlet, and a throat disposed between the inlet and the outlet; a valve disc disposed in the valve body and adapted to be displaced relative to the valve body between a primary seating position and a secondary seating position; a valve port disposed within the throat of the valve body, the valve port comprising a housing and a cartridge, the housing fixed to the valve body and defining a cavity with a first portion and a second portion, the first portion having a diameter that is smaller than a diameter of the second portion, the cartridge defining an inlet end, and outlet end, and an elongated orifice extending between the inlet end and the outlet end for allowing a fluid to pass through the valve port, the cartridge disposed in the cavity of the housing and adapted for displacement between a first position extending out of the housing, and a second position retracted into the housing; a primary seat carried by the cartridge, the primary seat sealingly engaged by the valve disc when the valve disc is in the primary seating position and the cartridge is in the first position, thereby stopping the flow of fluid through the valve port; and a secondary seat carried by the housing at a location proximate to the outlet end of the cartridge and having a diameter that is the same as the diameter of the first portion of the cavity of the housing, the secondary seat comprising an annular protrusion disposed immediately adjacent to and in contact with the outlet end of the cartridge, wherein the annular protrusion of the housing comprises a frustoconical nose portion, and the secondary seat being sealingly engaged by the valve disc when the valve disc is in the secondary seating position and the cartridge is in the second position, thereby stopping the flow of fluid through the valve port.