Patent ID: 8272524
Filing Date: 2012-09-25
Classification: B65D

Abstract:
1. A valve for a floating roof emergency drainage system for draining fluid accumulated atop said floating roof, comprising: a. a valve body having: b. said circumferential wall of said bottom part having at least one fluid discharge passage extending transversely through said circumferential wall for discharge of said fluid from said valve, c. a valve seal element axially movable in said bottom part bore between (i) an upper closed position where it abuts said shoulder, and (ii) a lower open position spaced axially downward from said upper closed position, and d. a spring mounted in said bottom part and constantly biasing said valve seal element toward said upper closed position, e. said valve seal element in said open position being at least partially below said fluid discharge passage in said bottom part bore, thus providing a passageway, when said valve seal element is in said open position, for said fluid accumulated on said roof to flow downward through said top part bore, past said shoulder and to exit said valve via said fluid discharge opening.