Patent ID: 7819383

Claim:
A selector valve having at least first and second ports, the selector valve comprising: (a) a closure element selectively displaceable between a first position, wherein the closure element sealingly engages the first port, and a second position, wherein the closure element sealingly engages the second port, with the closure element including two or more ball posts; and (b) a cam assembly configured to bias the closure element into at least the first or second position in a manner such that the closure element does not come into substantial contact with the first or second port when being moved into the first or second position, with the two or more ball posts of the closure element engaging the cam assembly and wherein when the closure element is rotated away from the first position, the engagement of the two or more ball posts with the cam assembly forces the closure element away from sealing engagement with the first port and wherein as the closure element is rotated toward the second position, the engagement of the two or more ball posts with the cam assembly allows the closure element to move into sealing engagement with the second port.