Patent ID: 8454334

Claim:
A compressor system comprising: a lubricant reservoir adapted to contain a lubricant; a screw compressor comprising a housing defining a compression chamber having a suction port, a discharge port, a first lubricant feed port located between the suction port and the discharge port, and a second lubricant feed port located between the discharge port and the first lubricant feed port, a drive rotor supported by the housing and disposed within the compression chamber, and an idler rotor supported by the housing and disposed within the compression chamber, the idler rotor driven by the drive rotor to compress and move fluid in a direction of increasing pressure from the suction port to the discharge port creating a pressure at a first pressure region; and a valve in fluid communication with the lubricant reservoir, the first lubricant feed port via a first lubricant feed passageway, and the second lubricant feed port via a second lubricant feed passageway, the valve movable between a first position and a second position based on the pressure at the first pressure region; wherein, in the first position, the valve fluidly connects the lubricant reservoir to the first lubricant feed passageway to direct lubricant to the first lubricant feed port, and, in the second position, the valve fluidly connects the lubricant reservoir to the second lubricant feed passageway to direct lubricant to the second lubricant feed port.