Abstract: A connector assembly 8 may include a connector 10 having flow channel 11 defined therein. One end of the flow channel may engagingly receive a tubular conduit 1. A checker 30 may be coupled to the connector 10. The connection checker 30 may engagingly receive a bent portion 1b of the tubular conduit 1 and ensure a proper connecting condition between the connector 10 and the tubular conduit 1. The connection checker 30 also may prevent the connector 10 from rotating relative to the tubular conduit 1. A holder 20 may detachably and pivotally couple the connection checker 30 to the connector 10.