colorado hirailer posted:brow-mounted, on a small steam locomotive
I don't recall many, if any "small" steam locomotives equipped with Elesco Feedwater Heater systems. The CB&Q had 2-8-2s and 4-6-2s equipped with the Elesco system, but you might not consider them "small". Can you give a better idea of what you consider "small"?
Also, that "brow-mounted" piece is just the heat exchanger bundle housing, while the big steam driven water pump is usually mounted on the Fireman's side (almost as big as a cross compound air compressor).