Patent ID: 7914050

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 for sealing to an outer diameter surface of a tube having a locking surface spaced from the end of the tube; a radially expandable and contractible retention device retained in the coupling nut/plug, which coupling nut/plug has at an axially outer end thereof a central opening through which the tube 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 tube 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; and wherein a seal carrier is arranged within the coupling nut/plug for retaining the annular tube seal, and the body sealing surface or seal include (i) a body seal retained by the seal carrier in spaced apart relationship to the annular tube seal or (ii) an axial end face seal surface on the seal carrier for sealing with an end face seal of a standard end face seal tube fitting/port body.