Patent ID: 8739832

Claim:
A valve arrangement comprising: an inlet conduit defining an inlet passage adapted for communication with a supply of pressurized motive fluid; a first planar surface spaced radially from the inlet conduit; first and second supply passages communicating through the first planar surface; a rotary valve including a second planar surface abutting against the first planar surface and a valve passage communicating through the second planar surface, the rotary valve being rotatable to place the inlet passage in communication with a selected one of the first and second supply passages through the valve passage, and adapted to conduct the pressurized motive fluid from the inlet passage to the selected one of the first and second supply passages; and a first power reduction port; wherein the rotary valve is rotatable to a power reduction position in which the first power reduction port at least partially communicates with at least one of the valve passage, first supply passage, and second supply passage to cause a portion of motive fluid to bypass one of the first and second supply passages, wherein the rotary valve is rotatable into a first power reduction position in which both the first power reduction port and the valve passage communicate with the first supply passage such that a portion of motive fluid flowing into the first supply passage flows out of the first supply passage through the first power reduction port to reduce the flow of motive fluid through the first supply passage.