Push-to-connect fitting systems and methods

A push-to-connect pipe fitting assembly, comprising:

• a body having an inlet and an outlet along a first longitudinal axis;
• an inlet housing maintained between the inlet and a center of the body, the inlet housing having an inner surface to receive a piping element;
• a sealing recession maintained within the inlet housing, the sealing recession including a curved sealing ring engaging surface;
• a sealing ring maintained within the sealing recession, the sealing ring to form a seal between the piping element and the sealing recession;
• a spacer ring maintained within the sealing recession, the spacer ring defined by an inner surface cooperatively engaged with the piping element, an outer surface cooperatively engaged with the sealing recession, an upper surface cooperatively engaged with the sealing ring, and an outwardly angled lower surface;
• a retention recession maintained within the inlet housing, disposed between the sealing recession and the inlet;
• a grip ring disposed between an upper surface of the retention recession and a retainer ring, having a plurality of teeth angled inwardly from and along a circumference of the grip ring, cooperatively engaged with the outwardly angled lower surface of the spacer ring;
• and
• the retainer ring having an inner surface cooperatively engaged with the piping element, an upper outer longitudinal surface cooperatively engaged with the retention recession, and an upper surface having a flat outer area to engage with a body of the grip ring and an upwardly angled inner area that extends towards the grip ring to engage with at least one of the plurality of teeth of the grip ring.