| 31. | While the Class 10 had outside admission valves, the Class 10-2 saturated used inside admission piston valves.
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| 32. | K5 # 5698 used conventional Walschaerts valve gear and piston valves, and developed a starting tractive effort of.
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| 33. | The French followed by about 1839 with a rival design, using the piston valves perfected by Fran�ois P�rinet.
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| 34. | Two locomotives were equipped with superheated boilers, bore cylinders and inside admission piston valves, and were reclassified to.
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| 35. | The locomotives had thick bar frames, Walschaerts valve gear to actuate their diameter piston valves, and were superheated.
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| 36. | The 52.80 had standard piston valves with Winterthur pressure equalisation and hence poor riding qualities when running light.
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| 37. | Superheating also required alteration of the valve gear and piston valves were therefore used instead of slide valves.
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| 38. | They had slide valves, which was unusual on a superheated locomotive, instead of piston valves like the Class Hd.
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| 39. | The Walschaerts valve gear actuated inside-admission piston valves, which would later become a standard on all subsequent NZR designs.
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| 40. | Five locomotives were equipped with superheating, bore cylinders and inside admission piston valves, and were reclassified to Class 8CW.
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