The Belgian State Railways Type 6 was a class of 2-6-0steam locomotives for express passenger service on steep inclines, introduced in 1885.[1]
They were superseded in 1897 by the similar but larger Type 16 Moguls, with twelve Type 6 receiving the improved Type 16 boiler that year. Owing to the deficiencies of the Belpaire firebox with a shallow grate, seven received new boilers with deep and narrow fireboxes, being reclassified as Type 6bis.[2]
The locomotives were built by various manufacturers from 1885 to 1894.[1] The machines had an outside frame and inside cylinders and a Walschaert valve gear.[3]