Push to connect conduit fitting assemblies and arrangements

A push to connect fitting comprising:

• first and second fitting components assembled to define an internal cavity enclosing a conduit retaining arrangement axially movable between an outboard conduit gripping position and an inboard conduit releasing position;
• and
• a conduit releasing insert including a fitting interlocking feature releasably engaging the second fitting component, and a releasing feature engaging the conduit retaining arrangement to secure the conduit retaining arrangement in the conduit releasing position against axial outboard movement;
• wherein movement of the conduit releasing insert to disengage the fitting interlocking feature from the second fitting component permits outboard axial movement of the conduit retaining arrangement to the conduit gripping position;
• and
• wherein the fitting interlocking feature comprises a rib that engages an interior surface of the second fitting component.

A push to connect fitting comprising:

• first and second fitting components assembled to define an internal cavity enclosing a conduit retaining arrangement axially movable between an outboard conduit gripping position and an inboard conduit releasing position;
• and
• a conduit releasing insert including a fitting interlocking feature releasably engaging the second fitting component, and a releasing feature engaging the conduit retaining arrangement to secure the conduit retaining arrangement in the conduit releasing position against axial outboard movement;
• wherein movement of the conduit releasing insert to disengage the fitting interlocking feature from the second fitting component permits outboard axial movement of the conduit retaining arrangement to the conduit gripping position;
• and
• wherein the conduit retaining arrangement comprises one of:
• a plurality of discrete gripping members retained in a plurality of cavities in a carrier;
• and
• a split colleting ring, wherein the releasing feature comprises an axial extension that engages an end portion of the split colleting ring.

A push to connect fitting comprising:

• first and second fitting components assembled to define an internal cavity enclosing a conduit retaining arrangement axially movable between an outboard conduit gripping position and an inboard conduit releasing position;
• and
• a conduit releasing insert including a fitting interlocking feature releasably engaging the second fitting component, and a releasing feature engaging the conduit retaining arrangement to secure the conduit retaining arrangement in the conduit releasing position against axial outboard movement;
• wherein movement of the conduit releasing insert to disengage the fitting interlocking feature from the second fitting component permits outboard axial movement of the conduit retaining arrangement to the conduit gripping position;
• wherein the conduit retaining arrangement includes a gripping portion that grips the outer surface of an installed conduit end portion and a colleting portion outboard of the gripping portion that collets the outer surface of the installed conduit end when the conduit retaining arrangement is in the outboard conduit gripping position;
• and
• wherein the releasing feature engages the colleting portion to secure the conduit retaining arrangement in the conduit releasing position against axial outboard movement.

A method of assembling a conduit with a push to connect fitting having first and second fitting components assembled to define an internal cavity enclosing a conduit retaining arrangement axially movable between an outboard conduit gripping position and an inboard conduit releasing position, the method comprising:

• providing a conduit releasing insert assembled with the second fitting component, the conduit releasing insert including a fitting interlocking feature releasably engaging the second fitting component and a releasing feature engaging the conduit retaining arrangement to secure the conduit retaining arrangement in the conduit releasing position against axial outboard movement;
• inserting the conduit into the push to connect fitting and through the conduit retaining arrangement;
• and
• moving the conduit releasing insert to disengage the fitting interlocking feature from the second fitting component, thereby permitting outboard axial movement of the conduit retaining arrangement to the conduit gripping position;
• wherein the push to connect fitting further comprises a spring member, wherein moving the conduit releasing insert to disengage the fitting interlocking feature from the second fitting component causes the spring member to axially bias the conduit retaining arrangement toward the conduit gripping position.

A push to connect fitting comprising:

• first and second fitting components assembled to define an internal cavity enclosing a conduit retaining arrangement axially movable between an outboard conduit gripping position and an inboard conduit releasing position;
• and
• a conduit releasing insert including a fitting interlocking feature releasably engaging the second fitting component, and a releasing feature engaging the conduit retaining arrangement to secure the conduit retaining arrangement in the conduit releasing position against axial outboard movement;
• wherein movement of the conduit releasing insert to disengage the fitting interlocking feature from the second fitting component permits outboard axial movement of the conduit retaining arrangement to the conduit gripping position;
• and
• wherein the first fitting component comprises a fitting body and the second fitting component comprises a fitting nut threadably assembled with the fitting body.