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A system includes a back pressure valve configured to mount in a mineral extraction system. The back pressure valve comprises a cylindrical body comprising a venting port coaxial with a longitudinal axis of the cylindrical body and a plunger disposed in the venting port, wherein the plunger comprise

A system includes a back pressure valve configured to mount in a mineral extraction system. The back pressure valve comprises a cylindrical body comprising a venting port coaxial with a longitudinal axis of the cylindrical body and a plunger disposed in the venting port, wherein the plunger comprises a stem that extends from the venting port into an adjacent cavity of the cylindrical body. A method of operating a valve, includes biasing a plunger to an open position, biasing a valve locking mechanism to a locked position in relation to a bore of a mineral extraction system, and biasing a plunger to a closed position.

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1. A system, comprising: a flow control device, comprising: a body; andan actuator coupled to the body, wherein the actuator has a first path of travel in an axial direction along an axis of the body between a first axial position and a second axial position;a radial lock coupled to the body, wherei

1. A system, comprising: a flow control device, comprising: a body; andan actuator coupled to the body, wherein the actuator has a first path of travel in an axial direction along an axis of the body between a first axial position and a second axial position;a radial lock coupled to the body, wherein the radial lock has a second path of travel in a radial direction between a radial unlocked position and a radial locked position in response to movement of the actuator along the first path of travel, the radial unlocked position is recessed relative to an outermost circumference of the body, the radial locked position protrudes relative to the outermost circumference of the body;a first retainer configured to hold the actuator in the first axial position; anda second retainer configured to hold the actuator in the second axial position. 2. The system of claim 1, wherein the first retainer comprises a shear structure disposed between the body and the actuator. 3. The system of claim 2, wherein the shear structure comprises one or more shear pins. 4. The system of claim 1, wherein the second retainer has a third path of travel in a radial direction between a first radial position and a second radial position, the second retainer is configured to allow axial movement of the actuator while the second retainer is in the first radial position, and the second retainer is configured to block axial movement of the actuator while the second retainer is in the second radial position. 5. The system of claim 4, wherein the second retainer is spring loaded in the radial direction from the first radial position toward the second radial position. 6. The system of claim 5, wherein the second retainer comprises a spring loaded pin. 7. The system of claim 1, wherein the second retainer is configured to move radially between a first opening in the body and a second opening in the actuator. 8. The system of claim 1, wherein the actuator is configured to move along the first path of travel between a first axial abutment and a second axial abutment. 9. The system of claim 8, comprising a hold down ring coupled to the body, wherein the first axial abutment is disposed on the hold down ring and the second axial abutment is disposed on the body. 10. The system of claim 9, wherein the hold down ring is threaded onto the body. 11. The system of claim 1, wherein the actuator comprises a hold down sleeve. 12. The system of claim 1, wherein the actuator comprises a first taper configured to engage a first mating taper on the radial lock. 13. The system of claim 12, wherein the actuator comprises a second taper configured to engage a second mating taper on the radial lock. 14. The system of claim 1, wherein the actuator comprises a tool interface configured to receive a load to drive the actuator along the axial path of travel from the first axial position to the second axial position. 15. The system of claim 1, wherein the actuator comprises a tool interface configured to receive a force to drive the actuator along the axial path of travel from the second axial position to the first axial position. 16. The system of claim 1, wherein the body comprises a radial opening, and the radial lock is disposed in the radial opening. 17. The system of claim 1, wherein the radial lock comprises a plurality of lock segments. 18. The system of claim 1, comprising a fluid passage through the flow control device. 19. The system of claim 18, comprising a valve disposed in the fluid passage. 20. The system of claim 19, wherein the valve is configured to move between an open position and a closed position relative to a valve sealing surface within the fluid passage, and the valve is configured to be held in the open position while running the flow control device into a bore. 21. The system of claim 1, wherein the flow control device is configured to seat in a bore and lock in the bore via the radial lock in response to a first axial force in a single first direction delivered via a single retrievable tool, wherein the single retrievable tool is configured to be retrieved from the bore after seating and locking the flow control device in the bore. 22. The system of claim 21, comprising the single retrievable tool configured to couple to the flow control device and configured to transmit the first axial force in the single first direction. 23. A system, comprising: a flow control device running tool configured to couple to a flow control device having an actuator, a radial lock, a first retainer, and a second retainer, wherein the actuator has a first path of travel in an axial direction along an axis of the body between a first axial position and a second axial position, the radial lock has a second path of travel in a radial direction between a radial unlocked position and a radial locked position in response to movement of the actuator along the first path of travel, the radial unlocked position is recessed relative to an outermost circumference of the body, the radial locked position protrudes relative to the outermost circumference of the body, the first retainer is configured to hold the actuator in the first axial position, the second retainer is configured to hold the actuator in the second axial position, and the flow control device running tool is configured to drive movement of the actuator along the first path of travel from the first axial position to the second axial position. 24. The system of claim 23, wherein the flow control device running tool is configured to transmit a first axial force in a single first direction to seat the flow control device in a bore and lock the flow control device in the bore via the radial lock, wherein the flow control device running tool is configured to be retrieved from the bore after seating and locking the flow control device in the bore. 25. A system, comprising: a flow control device retrieval tool configured to couple to a flow control device having an actuator, a radial lock, a first retainer, and a second retainer, wherein the actuator has a first path of travel in an axial direction along an axis of the body between a first axial position and a second axial position, the radial lock has a second path of travel in a radial direction between a radial unlocked position and a radial locked position in response to movement of the actuator along the first path of travel, the radial unlocked position is recessed relative to an outermost circumference of the body, the radial locked position protrudes relative to the outermost circumference of the body, the first retainer is configured to hold the actuator in the first axial position, the second retainer is configured to hold the actuator in the second axial position, and the flow control device retrieval tool is configured to drive movement of the actuator along the first path of travel from the second axial position to the first axial position. 26. The system of claim 25, wherein the flow control device retrieval tool is configured to transmit an axial retrieval force in a single retrieval direction to unlock the flow control device from a bore via the radial lock and extract the flow control device from the bore.