Patent ID: 8690121
Filing Date: 2014-04-08
Classification: F16K

Abstract:
1. A valve actuator comprising: an annular actuator nut having threads on an outer surface and threads on an inner surface that are oriented in a same direction to the threads on the outer surface and the threads on the inner surface having a greater pitch; a latching sleeve circumscribing a portion of the actuator nut and selectively moveable along an axis of the valve actuator; a linkage having an end attached to the actuator nut and threads that engage threads on an outer surface of the latching sleeve; a profile on an inner surface of the latching sleeve having an engaged portion and a disengaged portion; a lever slidable within the profile; a collar threaded to the outer surface of the actuator nut that is rotatable with respect to the actuator nut when the lever is in the engaged portion of the profile and rotates with the actuator nut when the lever is in the disengaged portion of the profile; and a valve stem threadingly engaged to the threads on the inner surface of the actuator nut.