Patent ID: 8240719

Claim:
An adaptor for converting to a push-to-connect tube fitting/port a standard tube fitting/port body having a threaded portion for threaded attachment of a nut/plug and a seal or sealing surface separate from the threaded portion of the standard tube fitting/port body, comprising: a coupling nut/plug having an axially inner threaded end portion for threaded attachment to the threaded portion of the fitting/port body; an annular tube seal contained within the coupling nut/plug coaxially with the axially inner threaded end portion of the coupling nut/plug for sealing to an outer diameter surface of a tubular member having a locking surface spaced from the end of the tubular member; a radially expandable and contractible retention device retained in the coupling nut/plug for axial movement relative to the tubular member during insertion of the tubular member into the adaptor, which coupling nut/plug has at an axially outer end thereof a central opening through which the tubular member can be inserted into the coupling nut/plug, whereby the locking surface can be engaged by the retention device to prevent axial withdrawal of the tubular member from the coupling nut/plug once inserted; a support ring separate from or integral with the coupling nut/plug and axially interposed between the retention device and the tube seal; and a body sealing surface or seal separate from the annular tube seal for sealing to the seal or sealing surface of the standard tube fitting/port body.