| 11. | This engine had slide valves on the LP which were now at the front.
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| 12. | Slide valve driven by bevel gear and scotch crank.
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| 13. | The slide valves were of the usual locomotive form.
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| 14. | Most of the superheated engines were also converted from having slide valves to piston valves.
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| 15. | All other steam locomotives with slide valves had just a single valve in the center.
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| 16. | A slide valves were actuated by Joy valve gear.
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| 17. | He replaced slide valves with valves that used cams.
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| 18. | Inside the servo valve, the flow of hydraulic fluid is controlled by two sliding valves.
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| 19. | The slide valve was removed and steam sent down.
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| 20. | It gets opened with a pneumatically operated sliding valve when a defined speed is reached.
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