Interflow limiting valve assembly
A sleeve for a valve assembly has an inside surface having an interior area and a first cylindrical section extending from a first axial end and a second cylindrical section located between the first cylindrical section and second axial end. A conical interior seating surface extends between the first and second cylindrical sections. The conical interior seating surface is metallic. The sleeve includes a groove that extends circumferentially around and radially outward in the first cylindrical section. The groove extends axially away from the conical interior seating surface towards the first axial end. The sleeve has one or more ports extending radially through the first cylindrical section proximate the groove and are spaced apart from the groove by a lip formed by the first cylindrical section. The lip extends a predetermined axial distance between the groove and the port. The lip extends around the first cylindrical section and radially inward.
1. A sleeve for a valve assembly, the sleeve comprising:
an annular body having an inside surface extending from a first axial end to a second axial end of the sleeve, the inside surface defining an interior area, the inside surface having a first cylindrical section extending from the first axial end and a second cylindrical section located between the first cylindrical section and the second axial end, a conical interior seating surface extending between the first cylindrical section and the second cylindrical section, the conical interior seating surface being metallic;
a groove extending circumferentially around and radially outward in the first cylindrical section, the groove extending axially away from the conical interior seating surface towards the first axial end;
at least one first port extending radially through the first cylindrical section of the inside surface proximate the groove, the at least one first port being spaced apart from the groove by a lip formed by the first cylindrical section, the lip extending a predetermined axial distance between the groove and the at least one first port, and the lip extending circumferentially around the first cylindrical section and extending radially inward from the first cylindrical section; and
wherein the groove extends radially outward from the inside surface 0.02 inches to 0.03 inches, to provide space for forming the conical interior seating surface.
2. The sleeve according to claim 1 , wherein the conical interior seating surface defines a first angle relative to a radial line oriented perpendicular to a longitudinal axis of the sleeve.
3. The sleeve according to claim 2 , wherein the first angle is about 45 degrees.
4. A valve assembly comprising:
a sleeve comprising:
an annular body having an inside surface extending from a first axial end to a second axial end of the sleeve, the inside surface defining an interior area, the inside surface having a first cylindrical section extending from the first axial end and a second cylindrical section located between the first cylindrical section and the second axial end, a conical interior seating surface extending between the first cylindrical section and the second cylindrical section, the conical interior seating surface being metallic;
a groove extending circumferentially around and radially outward in the first cylindrical section, the groove extending axially away from the conical interior seating surface towards the first axial end;
at least one first port extending radially through the first cylindrical section of the inside surface proximate the groove, the at least one first port being spaced apart from the groove by a lip formed by the first cylindrical section, the lip extending a predetermined axial distance between the groove and the at least one first port, and the lip extending circumferentially around the first cylindrical section and extending radially inward from the first cylindrical section;
an annular plug disposed in the interior area of the sleeve, the plug comprising an exterior surface extending from a third axial end to a fourth axial end of the plug, a conical exterior seating surface extending axially inward from the fourth axial end of the plug, the conical exterior seating surface being metallic;
at least a portion of the exterior surface of the plug slidingly engaging at least a portion of the inside surface of the annular body, and the plug defining a closed position wherein the conical exterior seating surface sealingly engages the conical interior seating surface;
the lip being in sealing proximity to at least a portion of the exterior surface of the plug thereby forming a barrier to the axial flow of fluids across the lip; and
wherein the groove extends radially outward from the inside surface 0.02 inches to 0.03 inches, to provide space for forming the conical interior seating surface.
5. The valve assembly according to claim 4 , wherein the conical interior seating surface defines a first angle relative to a radial line oriented perpendicular to a longitudinal axis of the sleeve.
6. The valve assembly according to claim 5 , wherein the first angle is about 45 degrees.
7. The valve assembly according to claim 4 , wherein the lip and the exterior surface of the plug are spaced apart by a gap of 0.002 inches to 0.005 inches.
8. The valve assembly of claim 4 , wherein the conical exterior seating surface defines a second angle relative to a longitudinal axis of the plug.
9. The valve assembly of claim 8 , wherein the second angle is about 47 degrees.
10. The valve assembly of claim 4 , wherein, the sleeve further comprises at least one second port.
11. The valve assembly of claim 10 , wherein during axial transition of the plug relative to the sleeve the exterior surface of the plug slidingly engages with the interior surface of the sleeve to cover the at least one first port.
12. The valve assembly of claim 11 , wherein when the exterior surface of the plug covers the at least one first port, at least a portion of the at least one second port is covered by the exterior surface of the plug.
13. A valve assembly comprising:
a sleeve comprising:
an annular body having an inside surface extending from a first axial end to a second axial end of the sleeve, the inside surface defining an interior area, the inside surface having a first cylindrical section extending from the first axial end and a second cylindrical section located between the first cylindrical section and the second axial end, a conical interior seating surface extending between the first cylindrical section and the second cylindrical section, the conical interior seating surface being metallic;
a groove extending circumferentially around and radially outward in the first cylindrical section, the groove extending axially away from the conical interior seating surface towards the first axial end;
at least one first port extending radially through the first cylindrical section of the inside surface proximate the groove, the at least one first port being spaced apart from the groove by a lip formed by the first cylindrical section, the lip extending a predetermined axial distance between the groove and the at least one first port, and the lip extending circumferentially around the first cylindrical section and extending radially inward from the first cylindrical section;
an annular plug disposed in the interior area of the sleeve, the plug comprising an exterior surface extending from a third axial end to a fourth axial end of the plug, a conical exterior seating surface extending axially inward from the fourth axial end of the plug, the conical exterior seating surface being metallic;
at least a portion of the exterior surface of the plug slidingly engaging at least a portion of the inside surface of the annular body, and the plug defining a closed position wherein the conical exterior seating surface sealingly engages the conical interior seating surface;
the lip being in sealing proximity to at least a portion of the exterior surface of the plug thereby forming a barrier to the axial flow of fluids across the lip; and
wherein the lip and the exterior surface of the plug are spaced apart by a gap of 0.002 inches to 0.005 inches.
14. The valve assembly according to claim 13 , wherein the conical interior seating surface defines a first angle relative to a radial line oriented perpendicular to a longitudinal axis of the sleeve.
15. The valve assembly according to claim 14 , wherein the first angle is about 45 degrees.
16. The valve assembly according to claim 13 , wherein the groove extends radially outward from the inside surface 0.02 inches to 0.03 inches, to provide space for forming the conical interior seating surface.
17. The valve assembly of claim 13 , wherein the conical exterior seating surface defines a second angle relative to a longitudinal axis of the plug.
18. The valve assembly of claim 17 , wherein the second angle is about 47 degrees.
19. The valve assembly of claim 13 , wherein the sleeve further comprises at least one second port.
20. The valve assembly of claim 19 , wherein during axial transition of the plug relative to the sleeve the exterior surface of the plug slidingly engages with the interior surface of the sleeve to cover the at least one first port.
21. The valve assembly of claim 20 , wherein when the exterior surface of the plug covers the at least one first port, at least a portion of the at least one second port is covered by the exterior surface of the plug.