A check valve includes an internal liquid trap that prevents the backflow of gas and debris from degrading the valve. The internal liquid trap can be formed by internal passages within a valve housing. One embodiment includes a plurality of concentric fluid passages, connected by a set of radial con
A check valve includes an internal liquid trap that prevents the backflow of gas and debris from degrading the valve. The internal liquid trap can be formed by internal passages within a valve housing. One embodiment includes a plurality of concentric fluid passages, connected by a set of radial conduits.
대표청구항▼
1. A valve structure comprising: a housing body having an outer housing with an axial conduit formed there through, and an inner housing disposed within the axial conduit, the inner housing comprising an inlet port to conduct fluid to an inner conduit of the inner housing;an anti-blow out screw posi
1. A valve structure comprising: a housing body having an outer housing with an axial conduit formed there through, and an inner housing disposed within the axial conduit, the inner housing comprising an inlet port to conduct fluid to an inner conduit of the inner housing;an anti-blow out screw positioned within the inner conduit;a check valve to restrict fluid flow from the inlet port to the inlet conduit;a set of radial conduits extending across the inner housing of the housing body and connecting the inlet conduit to an annular oil jacket disposed annularly between the outer housing and the inner housing;the annular oil jacket opening to the axial conduit distal from the inlet port, the anti-blow out screw allowing fluid flow from the annular oil jacket into the axial conduit. 2. The valve structure of claim 1, wherein the inlet port is threaded to allow connection to a fluid source. 3. The valve structure of claim 2, wherein the fluid source is a source of lubricating oil. 4. The valve structure of claim 1, wherein the check valve is a ball check valve comprising a first ball disposed within the inlet conduit, the first ball to fluid flow from the inlet port to the inlet conduit. 5. The valve structure of claim 4, wherein the ball check valve further comprises a first spring disposed within the inlet conduit, the first spring loading the first ball against the inlet port. 6. The valve structure of claim 5, wherein the ball check valve further comprises a second ball disposed within the inner conduit, the second ball to fluid flow from inner conduit to the set of radial conduits. 7. The valve structure of claim 6, wherein the ball check valve further comprises a second spring disposed within the inlet conduit and in adjacent communication with the anti-blow out screw, the second ball disposed in adjacent communication with the second spring, the first spring disposed in adjacent communication with the second ball, and the second ball disposed in adjacent communication with the second spring. 8. The valve structure of claim 1, wherein the inner housing further comprises a female threaded portion located proximate to where the annular oil jacket opens to the outlet conduit, the female threaded portion adapted to receive the anti-blow out screw. 9. The valve structure of claim 8, wherein rotatably adjusting the anti-blow out screw compresses a first spring loading the first ball against the inlet port. 10. The valve structure of claim 1, wherein the anti-blow out screw further comprises at least one output groove to allow fluid to flow from the outlet conduit out of the housing body. 11. The valve structure of claim 1, wherein the housing body is threaded proximate to the outlet port to allow connection to an equipment. 12. The valve structure of claim 1, wherein the check valve allows a flow of fluid through the check valve under pressure from the inlet port and prevents a backflow of material from the outlet through the housing body. 13. The valve structure of claim 1, wherein the annular oil jacket forms a liquid trap within the housing body, the liquid trap preventing gas from equipment attached to the axial conduit from degrading the check valve. 14. A method of manufacturing a valve structure comprising: forming a housing body having an outer housing with an axial conduit formed there through, and an inner housing disposed within the axial conduit, the inner housing comprising an inlet port to conduct fluid to an inner conduit of the inner housing and a set of radial conduits extending across the inner housing of the housing body and connecting the inlet conduit to an annular oil jacket disposed annularly between the outer housing and the inner housing;positioning an anti-blow out screw within the inner conduit; anddisposing a check valve within the inner conduit to restrict fluid flow from the inlet port to the inlet conduit; whereinthe annular oil jacket opens to the axial conduit distal from the inlet port, the anti-blow out screw allows fluid flow from the annular oil jacket into the axial conduit. 15. The method of claim 14, wherein the inlet port is threaded to allow connection to a fluid source. 16. The method of claim 15, wherein the fluid source is a source of lubricating oil. 17. The method of claim 14, wherein the check valve is a ball check valve comprising a first ball disposed within the inlet conduit, the first ball to fluid flow from the inlet port to the inlet conduit. 18. The method of claim 17, wherein the ball check valve further comprises a first spring disposed within the inlet conduit, the first spring loading the first ball against the inlet port. 19. The method of claim 18, wherein the ball check valve further comprises a second ball disposed within the inner conduit, the second ball to fluid flow from inner conduit to the set of radial conduits. 20. The method of claim 19, wherein the ball check valve further comprises a second spring disposed within the inlet conduit and in adjacent communication with the anti-blow out screw, the second ball disposed in adjacent communication with the second spring, the first spring disposed in adjacent communication with the second ball, and the second ball disposed in adjacent communication with the second spring.
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