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 (136; 236; 436; 536) disposed within the throat of the valve body, the valve port (136; 236; 436; 536) comprising a housing (260; 360; 460; 560) and a cartridge (262; 362; 462; 562), the housing (260; 360; 460; 560) fixed to the valve body and defining a cavity (274; 374) with a first portion (274a; 374a) and a second portion (274b; 374b), the first portion (274a; 374a) having a diameter that is smaller than a diameter of the second portion (274b; 374b), the cartridge (262; 362; 462; 562) defining an inlet end, and outlet end, and an elongated orifice (288; 388; 488; 588) extending between the inlet end and the outlet end for allowing a fluid to pass through the valve port (136; 236; 436; 536), the cartridge (262; 362; 462; 562) disposed in the cavity (274; 374) of the housing (260; 360; 460; 560) and adapted for displacement between a first position extending out of the housing (260; 360; 460; 560), and a second position retracted into the housing (260; 360; 460; 560); a primary seat (294; 394; 494; 594) carried by the cartridge (262; 362; 462; 562), the primary seat (294; 394; 494; 594) sealingly engaged by the valve disc when the valve disc is in the primary seating position and the cartridge (262; 362; 462; 562) is in the first position, thereby stopping the flow of fluid through the valve port (136; 236; 436; 536); and a secondary seat (267; 367) carried by the housing (260; 360; 460; 560) at a location proximate to the outlet end of the cartridge (262; 362; 462; 562), the secondary seat (267; 367) having a diameter that is the same as the diameter of the first portion (274a; 374a) of the cavity (274; 374) of the housing (260; 360; 460; 560), and the secondary seat (267; 367) being sealingly engaged by the valve disc when the valve disc is in the secondary seating position and the cartridge (262; 362; 462; 562) is in the second position, thereby stopping the flow of fluid through the valve port (136; 236; 436; 536). 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 (136; 236; 436; 536) disposed within the throat of the valve body, the valve port (136; 236; 436; 536) comprising a housing (260; 360; 460; 560) and a cartridge (262; 362; 462; 562), the housing (260; 360; 460; 560) fixed to the valve body and defining a cavity (274; 374) with a first portion (274a; 374a) and a second portion (274b; 374b), the first portion (274a; 374a) having a diameter that is smaller than a diameter of the second portion (274b; 374b), the cartridge (262; 362; 462; 562) defining an inlet end, and outlet end, and an elongated orifice (288; 388; 488; 588) extending between the inlet end and the outlet end for allowing a fluid to pass through the valve port (136; 236; 436; 536), the cartridge (262; 362; 462; 562) disposed in the cavity (274; 374) of the housing (260; 360; 460; 560) and adapted for displacement between a first position extending out of the housing (260; 360; 460; 560), and a second position retracted into the housing (260; 360; 460; 560); a primary seat (294; 394; 494; 594) carried by the cartridge (262; 362; 462; 562), the primary seat (294; 394; 494; 594) sealingly engaged by the valve disc when the valve disc is in the primary seating position and the cartridge (262; 362; 462; 562) is in the first position, thereby stopping the flow of fluid through the valve port (136; 236; 436; 536); and a secondary seat (267; 367) carried by the housing (260; 360; 460; 560) at a location proximate to the outlet end of the cartridge (262; 362; 462; 562), the secondary seat (267; 367) having a diameter that is the same as the diameter of the first portion (274a; 374a) of the cavity (274; 374) of the housing (260; 360; 460; 560), and the secondary seat (267; 367) being sealingly engaged by the valve disc when the valve disc is in the secondary seating position and the cartridge (262; 362; 462; 562) is in the second position, thereby stopping the flow of fluid through the valve port (136; 236; 436; 536).