The BG-C valve is used in cryogenic applications up to -423°F (-253°C) inside the cold box and is specially recommended in cases where a simplified maintenance of the valve is required, and which can be performed from outside the cold box.
In order to minimize heat transfer inside the cold box, the BG-C valve has a lighweight extended bonnet welded to the body, designed to keep a portion of vaporized fluid between the packing box and the liquid at cryogenic temperature.
