auxiliary system return line

brake cooling return line

control rod drive return line

coolant return line

coolant-return line

cylinder return passage

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

fuel return line fitting

fuel return line restriction specification

fuel return passage check valve

heater return line

helium return line

hot water return line