A tube connection system is disclosed that includes a barb connection, a tube received on the barb connection, and a retainer for maintaining the tube over the barb connector. The retainer includes a first elongate strap, a second elongate strap that is parallel to the first elongate strap, and a bridge between said first and second elongate straps, said bridge transversely spacing said first and second elongate straps by a predetermined first distance. The retainer also includes a first lock for locking said first elongate strap and a second lock for locking said second elongate strap.