Tube fitting.

摘要

There is disclosed a tube fitting (10) for joining resinous plastic tubing comprising a fitting body (12) having an opening with a conically shaped camming mouth (38). A tube (20) extends into the opening. A first ferrule (16) is slidably received on the tube (20) and has an exterior surface which faces the camming mouth (38). A second ferrule (18) is also slidably received on the tube (20) at a location outwardly of the opening and the first ferrule. The second ferrule (18) has a nose portion (46) which engages the first ferrule adjacent the tube and is snap fitted within a recess (50) formed circumferentially of the tube prior to association of the tube with the fitting. The nose portion (46) of the second ferrule (18) is engaged in the recess (50) in axial driving engagement with the tube prior to make-up of said fitting. A nut member (14) is threadedly engaged with the body (12) for driving the first and second ferrules (16,18) into the camming mouth (38) during fitting make-up. <IMAGE> <IMAGE>