Patent ID: 8679299

Claim:
A coke drum de-heading valve comprising: a flanged orifice for connection to a coke drum; a seat assembly comprising at least one dynamic, live loaded seat assembly, each dynamic, live loaded seat assembly including a force applicator, a force transfer module having an angled portion, and a dynamic, live loaded seat that has an angled portion that corresponds to the angled portion of the force transfer module such that when the force applicator applies force to the force transfer module in a first direction, the interaction of the angled portions of the force transfer module and of the dynamic, live loaded seat causes the live loaded seat to be forced in a direction generally perpendicular to the first direction; and a blind actuated by an actuator; wherein the at least one dynamic live loaded seat maintains continuous metal to metal contact with the blind during coking of the drum and during variation in temperature, wherein the dynamic, live loaded seat is structured to move axially while said blind is actuated between an open and a closed position adjusting a load applied to the blind in order to compensate for bowing of the blind during coking of the drum.