Abstract: An active flush regulation system having a rotary component, a stationary component, one or more biasing elements for applying a biasing force to the stationary component in a first direction for biasing together a rotor sealing surface and a stator sealing surface, and a holder component for holding one or more of the stationary component and the rotary component. The rotor sealing surface and the stator sealing surface form an under-balanced seal face, where in a first closed position the rotor sealing surface and the stationary sealing surface contact each other, and when flushing fluid is introduced to the seal face, the flushing fluid acts to place the rotor sealing surface and the stator sealing surface in an open position where the rotor sealing surface and the stator sealing surface are separated from each other to form a gap to allow the flushing fluid to pass therealong.

Abstract: A mechanical seal assembly having a gland element configured to mount to stationary equipment, a rotary seal ring for coupling to and rotating with a shaft, a stationary seal ring configured to remain stationary relative to the shaft where the stationary seal ring has a main body having an outer surface having a heat transfer channel formed therein that is sized and configured for circulating a heat transfer fluid, and a holder element for coupling the rotary seal ring to the shaft and for rotating with the shaft. The heat transfer channel can be a low pressure heat transfer channel.

Abstract: A system for regulating an axial biasing force applied to a stacked set of packing elements mounted within stationary equipment, comprising a packing loading assembly for sealing a process fluid within the stationary equipment and for applying the axial biasing force to the packing elements via a pressurized fluid from a pressure regulator. The packing loading assembly includes a gland element for mounting to the stationary equipment by a plurality of gland bolts, and an external actuation subsystem for coupling to at least one of the plurality of gland bolts for applying an axial actuation force directly to the gland element in response to the pressurized fluid. The gland element in response to the axial actuation force applies the axial biasing force to the packing elements.

Abstract: A pressure regulating system for use with a mechanical seal and stationary equipment for applying a substantially uniform force or load to a stacked set of packing elements. The force applied to the packing elements can be regulated or controlled in real time and in a remote manner. The mechanical seal includes an axially movable follower element that can be energized by pressurized fluid to move between a pre-loaded position where the follower element does not apply an axial load to the packing elements to a loaded position where the follower element applies the axial load to the packing elements.