coolant-return line

return coolant line valve

coolant line

coolant line connection

coolant return

coolant-return

on-line coolant clean-up

turbocharger coolant return tube

turbocharger inlet coolant line

auxiliary system return line

brake cooling return line

control rod drive return line

diverter valve oil return line

diverter valve return line

excess-oil return line

forward drive return line

fuel return line

fuel return line connection

fuel return line elbow