A medical fluid connector includes a first port； a second port； a pivot located between the ports； a guide wall located between the first port and the pivot and positioned to reside adjacent to a first side of a wall of a structure supporting the connector when inserted into the structure； and a guide member located between the second port and the pivot and including a member wall positioned to reside adjacent to a second side of the wall of the structure supporting the connector when inserted into the structure, the guide member further including at least one member flange extending from the member wall, the member flange sized so as to provide room for a lid of the structure to close onto the member flange and rotate the connector about the pivot into a desired operating position. A dialysis system, disposable and method using the connector are also provided.
