Patent ID: 6152159
Filing Date: 2000-11-28
Classification: B22D,F16K,Y10T

Abstract:
A method for delivering a predetermined volume of molten metal from a molten metal holding vessel to a molten metal receiving vessel via a launder extending from said holding vessel and opening to said receiving vessel, said launder including a valve assembly having a valve port defined by a portion of said valve assembly and a movable valve element, comprising:providing said valve element with a heat-resistant, resilient sealing member confronting said valve port;with said valve element spaced from said valve port, permitting a predetermined volume of molten metal to flow through said launder from said holding vessel to said receiving vessel; andthereafter, advancing said valve element toward said valve port until said resilient sealing member engages and is compressed against the portion of said valve assembly defining said valve port, thereby sealing said valve port and preventing the flow of additional molten metal through said launder from said holding vessel to said receiving vessel.