dsc60033.jpg

View of the lines leading between the heat exchanger and the forward end of the engine.

Picture 5 of 6.

One line, the LOX supply line, comes from the LOX dome via the flange at right just above center and runs closer to the thrust chamber (behind the turbopump outrigger).

The three other lines run parallel to each other, terminating in these red closures. The lines would connect to the S-IC stage at this point. From top to bottom, these three are the GOX return line, the helium return line, and the helium supply line.