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A relief valve coupled to a container is disclosed. The relief valve may include a valve body forming an internal chamber, an inlet portion connected to the chamber and configured to receive content flow from the container, a spring, a poppet including a seat disc, wherein a spring force exerted by

A relief valve coupled to a container is disclosed. The relief valve may include a valve body forming an internal chamber, an inlet portion connected to the chamber and configured to receive content flow from the container, a spring, a poppet including a seat disc, wherein a spring force exerted by the spring biases the seat disc towards the inlet portion, and a cap configured to include a plurality of passages.

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1. A relief valve configured to be coupled to a relief outlet of a cryogenic container, the relief valve comprising: a valve body forming an internal chamber and having a central axis, a proximal end and a distal end;an inlet portion located at the proximal end of the valve body and configured to be

1. A relief valve configured to be coupled to a relief outlet of a cryogenic container, the relief valve comprising: a valve body forming an internal chamber and having a central axis, a proximal end and a distal end;an inlet portion located at the proximal end of the valve body and configured to be connected to the internal chamber and to receive content flow from the container, wherein fluid entering the internal chamber from the inlet portion travels in a general direction of the central axis;a spring and a moveable poppet disposed in the internal chamber, wherein a spring force exerted by the spring biases the poppet towards the inlet portion;an adjustable spring top disposed in the internal chamber and engaged with the spring opposite the moveable poppet, the adjustable spring top comprising a fluid passage; anda cap configured to be connected to the distal end of the valve body, the cap comprising a plurality of passages for fluid flow, wherein each of the plurality of passages has a separate passage axis that is generally perpendicular to the central axis, the cap defining a conical void located above, and in fluid communication with, the plurality of passages. 2. The relief valve of claim 1, wherein the inlet portion comprises an inlet orifice having a diameter sized to reduce content flow into the relief valve from the container. 3. A relief valve for coupling to a relief port of a container, wherein the relief port has a port central axis, the relief valve comprising: a valve body forming an internal chamber and having a valve central axis, a proximal end and a distal end, wherein the valve central axis is angled at a non-zero angle between 0 and 30 degrees with respect to the port central axis;an inlet portion located at the proximal end of the valve body and configured to be connected to the internal chamber and to receive content flow from the container;a spring and a moveable poppet assembly disposed in the internal chamber, wherein a spring force exerted by the spring biases the poppet towards the inlet portion; anda cap configured to be connected to the distal end of the valve body, the cap comprising a plurality of passages for fluid flow, wherein each of the plurality of passages has a separate passage axis that is generally perpendicular to the valve central axis, and the cap precludes fluid flow in the direction of the valve central axis. 4. The relief valve of claim 3, wherein the port central axis is generally horizontal with respect to the ground, and the non-zero angle is defined with respect to a horizontal reference plane parallel to the ground such that the distal end of the valve body points toward the ground. 5. The relief valve of claim 4, further comprising an adjustable spring top disposed in the internal chamber and in contact with the spring and configured to move towards and away from the inlet portion to increase and decrease, respectively, the spring force exerted by the spring onto the poppet, the spring top being disposed entirely below the cap. 6. The relief valve of claim 5, wherein each of the plurality of passages are cylindrical and radially extending. 7. The relief valve of claim 6, wherein the cap defines a conical void with an apex intersecting the central axis, the conical void being in fluid communication with the internal chamber. 8. A pressurized container assembly comprising: a pressurized tank comprising an internal volume and a relief port connected to the internal volume, the relief port having a port central axis; anda relief valve configured to couple to the relief port, the relief valve comprising: a valve body forming an internal chamber and having a valve central axis, a proximal end and a distal end, wherein the valve central axis is angled at a non-zero angle with respect to the port central axis;an inlet portion located at the proximal end of the valve body and configured to be connected to the internal chamber and to receive content flow from the pressurized tank;a spring and a moveable poppet assembly disposed in the internal chamber, wherein a spring force exerted by the spring biases the poppet assembly towards the inlet portion, and wherein the poppet assembly comprises a seat disc configured to engage with a valve seat in the internal chamber to close the relief valve when the spring force exceeds a container pressure within the container;an adjustable spring top disposed in the internal chamber and in contact with the spring and configured to move towards and away from the inlet portion to increase and decrease, respectively, the spring force exerted by the spring onto the seat disc, the adjustable spring top comprising a fluid passage; anda cap configured to be connected to the distal end of the valve body, the cap comprising a plurality of passages for fluid flow, wherein each of the plurality of passages has a separate passage axis that is generally perpendicular to the valve central axis, and wherein the cap further comprises structure to preclude fluid flow in the direction of the valve central axis. 9. The pressurized container assembly of claim 8, wherein the non-zero angle is between 0 and 30 degrees, the port central axis is generally horizontal with respect to the ground, and the non-zero angle is defined with respect to a horizontal reference plane parallel to the ground such that the distal end of the valve body points toward the ground. 10. The pressurized container assembly of claim 9, wherein the cap defines a conical void in fluid communication with, the internal chamber; and each of the plurality of passages are cylindrical and radially extending. 11. A valve comprising: a valve body defining an internal chamber, a central axis, a proximal end, and a distal end, the valve body comprising an inlet portion located at the proximal end thereof, the inlet portion configured to fluidly communicate with the internal chamber and to receive fluid from a source;a spring biasing a moveable poppet;an adjustable spring top disposed in the internal chamber and engaged with the spring opposite the moveable poppet, the adjustable spring top comprising a fluid passage; anda cap connected to the valve body, the cap defining (a) a plurality of fluid passages, each of the plurality of fluid passages having a respective fluid passage axis, each of the fluid passage axes being generally perpendicular to the central axis and (b) a conical void in fluid communication with the plurality of fluid passages. 12. The valve of claim 11, wherein the central axis intersects an apex of the conical void. 13. The valve of claim 11, wherein the conical void has a triangular cross section. 14. The valve of claim 11, wherein the poppet comprises a seat disc configured to engage a valve seat, the spring biasing the seat disc toward engagement with the valve seat. 15. The valve of claim 14, wherein the spring top is closer to the proximal end of the valve body than any portion of the cap. 16. The valve of claim 14, wherein the inlet portion defines an inlet orifice, the poppet being configured such that when the seat disc engages the valve seat, the poppet is external to the inlet orifice. 17. The valve of claim 11, wherein each of the plurality of fluid passages are cylindrical and radially extending. 18. The valve of claim 15, wherein the seat disc is a cylindrical and solid block of material, a center of the seat disc being in the solid block of material. 19. The valve of claim 11, wherein an outer surface of the cap is threaded to an inner surface of the valve body, the inner surface of the valve body at least partially defining the internal chamber. 20. The valve of claim 11, wherein the plurality of fluid passages are cylindrical, and each of the plurality of fluid passages has an inner end configured to accept fluid flow from the internal chamber and an outer end configured to exhaust the accepted fluid; a radial thickness of the valve body taken in a reference plane disposed between the spring top and the cap being less than a radial length of at least one of the plurality of fluid passages, the radial length being a radial distance from the inner end to the outer end of the at least one fluid passage. 21. The valve of claim 11, wherein the plurality of fluid passages are cylindrical, each of the plurality of fluid passages having an inner end configured to accept fluid flow from the internal chamber and an outer end configured to exhaust the accept fluid; and an outer surface of the cap being flush with an outer surface of the valve body, such that a reference radius defined between a central axis of the cap and any one of the outer ends of the plurality of fluid passages is equal to a reference radius defined between the central axis of the valve body and the outer surface of the valve body. 22. A pressurized container assembly comprising: a pressurized tank defining an internal cavity and comprising a relief port in fluid communication with the internal cavity, the relief port having a port central axis;the valve of claim 11, the valve being coupled to the relief port and serving as a relief valve for the pressurized tank, wherein the central axis of the valve is disposed at a non-zero angle with respect to the port central axis such that the central axis of the valve, after extending through the valve body and the cap, intersects ground. 23. A container assembly comprising: a tank defining an internal cavity for holding pressurized fluid and comprising a relief port in fluid communication with the internal cavity;the valve of claim 11 coupled to the relief port and serving as a relief valve for the tank, the valve being oriented such that the central axis of the valve, after extending through the valve body and the cap, intersects ground. 24. The container assembly of claim 22, wherein the internal chamber is pressurized with a gas phase fluid, the relief port is in fluid communication with the gas phase fluid, and the valve is configured to vent the gas phase fluid to ambient via the plurality of fluid passages.