Single action push to connect conduit fitting

A push to connect fitting assembly for a conduit having a longitudinal axis, the fitting assembly comprising:

• a first fitting component having an outboard end that is adapted to receive a conduit end;
• a second fitting component joined to the first fitting component to define an interior cavity;
• a seal device disposed in the interior cavity, wherein the seal device forms a seal between one of the first and second fitting components and an outer surface of a conduit end when the conduit end is inserted into the outboard end of the first fitting component;
• and
• a retainer assembled with at least one of the first and second fitting components, the retainer including a retainer body, a gripping portion that engages the inserted conduit end over a first surface contact area to grip the conduit end, and a colleting portion outboard of the gripping portion, wherein the colleting portion engages the inserted conduit end over a second surface contact area greater than the first surface contact area to collet the inserted conduit end;
• wherein the gripping portion comprises a plurality of bearing members captured between the retainer body and a tapered surface of the fitting assembly, and the colleting portion comprises a plurality of axially extending, radially flexible members integral with the retainer body.

A push to connect fitting assembly comprising:

• a conduit having a longitudinal axial and a circumferential groove disposed at an end portion of the conduit;
• a first fitting component having an outboard end that is adapted to receive the conduit end portion;
• a second fitting component joined to the first fitting component to define an interior cavity;
• a seal device disposed in the interior cavity, wherein the seal device forms a seal between one of the first and second fitting components and an outer surface of the conduit end when the conduit end is inserted into the outboard end of the first fitting component;
• a retainer assembled with at least one of the first and second fitting components, the retainer including a gripping portion that engages the circumferential groove to grip the inserted conduit end;
• and
• a biasing member axially disposed between the retainer and the seal device, the biasing member applying a first axial load to the retainer to produce a gripping force between the gripping portion and the inserted conduit end.