Compression ferrule adapter

1. A fluid coupler comprising:

a fitting defining a first fluid passage having a first fluid passage diameter, the fitting including a receiver including an opening having an inner first diameter, and external threads;

a mounting nut including internal threads to couple with the external threads of the fitting;

a fluid conduit defining a second fluid passage having a second fluid passage diameter, the fluid conduit having an end and an outer second diameter, wherein the outer second diameter is less than the inner first diameter and wherein the first fluid passage diameter is larger than the outer second diameter and the second fluid passage diameter; and

a ferrule adapter including:

a stop configured to engage the end of the fluid conduit wherein the stop is an annular ring with an inner diameter less than both the inner first diameter of the receiver and the outer second diameter of the fluid conduit;

a body having a proximal end and a distal end, the proximal end having a plurality of circumferentially spaced arms extending axially from the body and supporting the stop; and

a first angled surface protruding from the body of the ferrule adapter, the first angled surface extending radially outward from the proximal end in the direction of the distal end, the first angled surface being compressed by an inner surface of the receiver of the fitting to clamp onto the fluid conduit as the internal threads of the mounting nut are threaded onto the external threads of the fitting.

2. The fluid coupler of claim 1 , further comprising a second angled surface, coupled with the first angled surface and extending radially inward in the direction of the distal end, such that the second angled surface engages an inner surface of the mounting nut as the mounting nut is threaded onto the receiver of the fitting.

3. The fluid coupler of claim 1 , wherein the fitting and the fluid conduit are fluidly coupled.

4. The fluid coupler of claim 1 , wherein the distal end of the ferrule body projects through an opening in the mounting nut when the mounting nut is secured on the receiver of the fitting.

5. The fluid coupler of claim 1 , further comprising a plurality of circumferentially spaced arms operably coupling the body and the stop.

6. The fluid coupler of claim 5 , wherein the plurality of arms are made of a flexible material such that the stop can axially change position in relation to the body.

7. A fluid coupler comprising:

a fitting defining a first fluid passage having a first fluid passage diameter, the fitting including a receiver having an opening with an inner first diameter, and external threads;

a mounting nut including internal threads to couple with the external threads of the fitting;

a fluid conduit defining a second fluid passage having a second fluid passage diameter, the fluid conduit having an end and an outer second diameter, wherein the outer second diameter is less than the inner first diameter and wherein the first fluid passage diameter is larger than the outer second diameter and the second fluid passage diameter; and

a ferrule adapter concentrically receiving the fluid conduit and supported within the receiver of the fitting;

wherein outer second diameter of the fluid conduit is between 10 percent and 75 percent smaller than the inner first diameter of the receiver of the fitting; and

wherein the ferrule adapter includes:

a stop configured to engage the end of the fluid conduit;

a body having a proximal end and a distal end, the proximal end having a plurality of circumferentially spaced arms extending axially from the body and supporting the stop; and

a first surface protruding from the body of the ferrule adapter, the first surface extending radially outward from the proximal end in the direction of the distal end, the first surface being compressed by an inner surface of the receiver of the fitting to clamp onto the fluid conduit as the internal threads of the mounting nut are threaded onto the external threads of the fitting.

8. The fluid coupler of claim 7 , wherein the outer second diameter of the tube is between 15 percent and 35 percent smaller than the inner first diameter of the receiver of the fitting.

9. A fluid coupler comprising:

a fitting including a receiver having an opening with an inner first diameter, and external threads;

a mounting nut including internal threads to couple with the external threads of the fitting;

a fluid conduit having an end and an outer second diameter, wherein the outer second diameter is less than the inner first diameter; and

a ferrule adapter concentrically receiving the fluid conduit and supported within the receiver of the fitting;

wherein outer second diameter of the fluid conduit is between 10 percent and 75 percent smaller than the inner first diameter of the receiver of the fitting; and

wherein the ferrule adapter includes:

a stop configured to engage the end of the fluid conduit;

a body having a proximal end and a distal end, the proximal end supporting the stop;

a first angled surface protruding from the body of the ferrule adapter, the first angled surface extending radially outward from the proximal end in the direction of the distal end, the first angled surface being compressed by an inner surface of the receiver of the fitting to clamp onto the fluid conduit as the internal threads of the mounting nut are threaded onto the external threads of the fitting; and

a plurality of circumferentially spaced arms operably coupling the body and the stop.

10. The fluid coupler of claim 9 , wherein the ferrule adapter further comprises a second angled surface, coupled with the first angled surface and extending radially inward in the direction of the distal end, such that the second angled surface engages an inner surface of the mounting nut as the mounting nut is threaded onto the receiver of the fitting.

11. The fluid coupler of claim 9 , wherein the distal end of the ferrule body projects through an opening in the mounting nut when the mounting nut is secured on the receiver of the fitting.

12. The fluid coupler of claim 9 , wherein the plurality of arms are made of a flexible material such that the stop can axially change position in relation to the body.

13. The fluid coupler of claim 9 , wherein the stop is an annular ring with an inner diameter less than an inner diameter of the receiving bore.

14. A ferrule adapter for use within a fluid coupler, the ferrule adapter comprising:

a body extending axially along a longitudinal axis between a proximal end and a distal end, the body including a receiving bore extending along the longitudinal axis, the receiving bore configured to receive a fluid conduit;

a stop axially spaced apart from the proximal end of the body, the stop configured to engage an end of the fluid conduit;

a connector extending between the proximal end of the body and the stop, the connector configured to adjust the axial distance between the proximal end of the body and the stop; and

wherein the connector comprises a plurality of circumferentially spaced arms operably coupling the body and the stop, the arms being made of a flexible material such that the stop can axially change position in relation to the body and wherein the plurality of arms are helically shaped and extend from the proximal end of the body to the stop.