Patent ID: 8429930

Claim:
An oil separator for separating oil from a compressed gas and oil mixture, the oil separator comprising: a cylindrical housing comprising a first portion, a second portion disposed below the first portion, at least one inlet connection configured to receive the compressed gas and oil mixture, and at least one outlet connection configured to discharge a compressed gas with substantially all of the oil removed; the at least one outlet connection in fluid communication with a non-circular outlet external pipe, the outlet external pipe extending from within the first portion and passing through the first portion, the outlet external pipe extending into the cylindrical housing below the inlet connection; the inlet connection disposed in of the first portion approximately tangent to an inner wall of the cylindrical housing; the inlet connection in fluid communication with a discharge line of a compressor, the inlet connection configured to direct fluid tangentially in the cylindrical housing toward a first axis of the non-circular outlet external pipe; and the second portion comprising an oil reservoir configured to contain the separated oil from the gas and oil mixture.