A connector comprising a needless access device and a backflow check valve
for transferring fluids and method therefor. The connector may have a
first port, a second port, and a third port. A first valve element may be
positioned within the first port and a second valve element may be
positioned within the second port. The first valve element may be in a
first position as a first fluid flows between the first and third ports.
The second port may be used to introduce a second fluid into the
connector. Upon introduction of the second fluid to the connector, the
first valve element may move from the first position to a second
position. In the second position, fluid may be prevented from flowing
past the first valve element.