Patent ID: 7115149

Claim:
A separator tank assembly comprising: a cast hollow tank having a closed end and an open end with a separator chamber therebetween; a cast lid substantially closing the tank open end; a first integral fluid passage integrally cast in the cast hollow tank and cast lid and extending from the separator chamber to at least one external port, wherein the first integral fluid passage is a compressed air passage and wherein at least a first integral port is formed along the first integral fluid passage between the separator chamber and the external port; wherein the first integral port is configured to receive a separator element; and wherein the first integral port has a first integral separator passage extending from the first integral fluid passage to the separator element and a second integral separator passage extending from the separator element to the first integral fluid passage such that compressed air travels from the separator chamber, through the first integral fluid passage, through the first separator passage, through the separator element, through the second separator passage and through the first integral fluid passage to the external port.