Patent ID: 7712725

Claim:
A valve assembly adapted for connection in a reservoir for gravity draining of fluid therefrom, said valve assembly comprising: a hollow tubular stem having connecting means at its one end adapted for insertion into said reservoir, a housing secured to said stem, and a sealing barrel in flow communication with and slidably secured in said stem and housing adapted to close said barrel against a scaling surface, said barrel having a tab extending from said housing which when engaged selectively moves said barrel toward and away from said sealing surface, said tab having a first position closing said stem and barrel to prevent gravity flow of fluid therethrough and having a second position moving said barrel away from said sealing surface to open the gravity flow of fluid through said valve assembly, said barrel being selectively opened or closed by moving said barrel solely in the direction of flow of fluid from said reservoir and in line without twisting; said tab comprising a flexible lever integral with said barrel substantially enclosed within said housing when said barrel is in said closed first position and substantially free of said housing when in said second open position.