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