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.