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Overall view of the lines leading to and coming from the heat exchanger. From top to bottom, the lines are

  • GOX return line
  • Helium return line
  • LOX supply line
  • Helium supply line

Picture 3 of 3.

The ports on the heat exchanger to which these lines connect lead to coils of tubes in the heat exchanger interior, where warm turbine exhaust heats the oxygen and helium, which is then used to pressurize the propellant tanks.

 
Heat exchanger lines (GOX and helium return lines, LOX and helium supply lines) on F-1 Engine (Davidson Center) at U.S. Space and Rocket Center
Time picture taken Fri Jul 20 16:03:40 2012
Location picture taken Saturn V Hall
Davidson Center for Space Exploration
U.S. Space & Rocket Center
Huntsville, AL
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