Abstract: A compressor for providing automatic capacity modulation is disclosed. The compressor comprises a compression chamber, a compressing member, a reexpansion area, a flow passage, a valve member, and a biasing member. The flow passage is in fluid communication with the compression chamber and the reexpansion area. In one position, the valve member permits flow through the flow passage and in a second position it prevents flow. The valve member is subjected to a first operating condition of fluid on one side and a second operating condition of the fluid on the other side. The biasing member exerts a biasing force on the valve member. When the first operating condition reaches a predetermined point relative to the second operating condition, the valve member moves and effects a change in the capacity of the compressor.

Abstract: A compressor for providing automatic capacity modulation is disclosed. The compressor comprises a compression chamber, a compressing member, a reexpansion area, a flow passage, a valve member, and a biasing member. The flow passage is in fluid communication with the compression chamber and the reexpansion area. In one position, the valve member permits flow through the flow passage and in a second position it prevents flow. The valve member is subjected to a first operating condition of fluid on one side and a second operating condition of the fluid on the other side. The biasing member exerts a biasing force on the valve member. When the first operating condition reaches a predetermined point relative to the second operating condition, the valve member moves and effects a change in the capacity of the compressor.

Abstract: A suction noise attenuator for in-line placement in one or more suction gas conduits of a gas compressor unit, and having an elongated, tubular body or shell having a base end and a closure end, a base cap on the base end and a closure cap on the closure end, said caps and body forming an elongated, substantially closed attenuation cell having major and minor transverse axes oriented normally to each other, an elongated wave modulating barrel formed on or affixed to the closure cap and having major and minor transverse axes oriented normally to each other, the barrel being positioned within the cell substantially longitudinally thereof with the major transverse axis of the barrel being angularly offset from the major transverse axis of the cell and substantially dividing the cell into enlongated substantially equal volume halves, a socket receiving the distal end of the barrel and being formed in the interior surface of the base cap and defined by a floor and a sealing wall surrounding the same and extending