High pressure, large inner diameter hose coupling with termination attachment

1. A hose coupling for attachment to an end portion of a hose, the hose coupling comprising:

a fitting attachable to the end portion of the hose, the fitting comprising a ferrule and a stem including a first end portion insertable into an end portion of a hose, the ferrule attached to the stem;

a termination attachment attached to the fitting in opposing relationship to the end portion of the hose; and

an end termination associated with the termination attachment;

wherein the termination attachment forms a fluid-tight interface with the stem;

wherein the fluid-tight interface comprises:

a first seal formed by a sealing element sealed against opposing surfaces of the stem and the termination attachment; and

a second seal formed between opposing tapered surfaces of the stem and the termination attachment;

wherein the termination attachment and the ferrule include corresponding locking features to prevent the termination attachment from unthreading from the fitting;

wherein the stem includes a second sealing element arranged about the first end portion of the stem; and

wherein the ferrule includes a first collar portion disposed about the first end portion and defining an annular space between the first end portion and the first collar portion;

wherein the first end portion of the stem includes a series of external, annular barbs spaced axially apart from one another; and

the second sealing element is positioned axially between consecutive barbs of the series of external, annular barbs.

2. The hose coupling of claim 1 wherein the first collar portion includes an annular, internal serration that is positioned axially inward of the second sealing element to facilitate a fluid-tight interface between the second sealing element and the end portion of the hose.

3. The hose coupling of claim 2 wherein the annular, internal serration is axially separated from an adjacent annular, internal serration by a cylindrical segment, and the second sealing element is positioned axially between the annular, internal serration and the adjacent annular, internal serration.

4. The hose coupling of claim 3 wherein:

the cylindrical segment is formed as a recess in the outer surface of the ferrule.

5. The hose coupling of claim 4 wherein the cylindrical segment is located axially between external ridges on the ferrule.

6. The hose coupling of claim 1 wherein the termination attachment is in threaded engagement with the fitting by means of external threads on the termination attachment which mate with internal threads on the ferrule.

7. The hose coupling of claim 1 wherein the tapered surfaces are axially offset from the sealing element.

8. The hose coupling of claim 7 wherein the termination attachment is in threaded engagement with the fitting.

9. The hose coupling of claim 1 wherein:

the locking feature of the termination attachment comprises an annular locking groove;

the locking feature of the ferrule comprises one or more through-holes axially aligned with the annular locking groove; and

one or more set screws are received in the through-holes and protrude into the annular locking groove.

10. The hose coupling of claim 1 wherein the end termination is welded to the termination attachment.

11. The hose coupling of claim 10 wherein the termination attachment comprises a tubular structure that is threaded at one end and chamfered at an opposing end.

12. The hose coupling of claim 1 further comprising a second ferrule attached to the termination attachment.

13. The hose coupling of claim 12 wherein the second ferrule extends axially over the ferrule and is spaced radially outwardly of the ferrule.

14. A hose assembly comprising:

a hose comprising:

an inner tube;

a cable reinforcement layer surrounding the inner tube; and

a cover layer surrounding the cable reinforcement layer; and

the coupling of claim 12 crimped or swaged on an end portion of the hose.

15. The hose assembly of claim 14 wherein the termination attachment is in threaded engagement with the ferrule.

16. The hose assembly of claim 14 wherein the ferrule includes an internal serration positioned axially inward of the second sealing element to facilitate a fluid-tight interface between the second sealing element and the inner surface of the inner tube.

17. The hose assembly of claim 14 wherein the end termination is welded to the termination attachment.

18. The hose assembly of claim 14 wherein the inner tube is at least partially skived along the end portion of the hose.

19. The hose assembly of claim 18 wherein the cover layer is at least partially skived along the end portion of the hose.

20. A method of attaching the hose coupling of claim 1 to a hose, the method comprising:

inserting an end portion of a hose into the annular space defined between the ferrule and the stem;

radially constricting the annular space to attach the fitting to the end portion of the hose; and

after attaching the fitting to the end portion of the hose, threadably engaging the termination attachment to the fitting in opposing relationship to the end portion of the hose.

21. The method of claim 20 further comprising forming the fluid-tight interface between opposing surfaces of the termination attachment and the stem during the threaded engagement of the termination attachment to the fitting.

22. The method of claim 20 further comprising rotating the termination attachment relative to the fitting until a marking on an outer surface of the termination attachment is aligned with an end face of the ferrule.

23. The method of claim 20 wherein radially constricting the annular space compresses the second sealing element disposed about the stem against an inner surface of the hose to form a fluid-tight interface between the sealing element and the hose.

24. The method of claim 20 further comprising axially locking the termination attachment to the fitting to prevent unthreading of the termination attachment from the fitting.