A connector arrangement for attaching a gas conduit to a gas supply device and visually indicating the proper connection between the two components. The connector arrangement includes a connector attached to a gas conduit and a receptacle formed on a gas supply device. A visual indicator is associated with the receptacle such that when the connector is properly received within the receptacle, the visual indicator provides a visual indication to the user that the connection has been made. The visual indicator can include two distinct colors that provide a visual indication of whether a proper connection has been made. The visual indicator could alternatively include a light that is illuminated when the proper connection is made.