_:vb6983534 . _:vb6983535 "A standard Flight Refuelling Ltd Mk 8 probe nozzle was attached to the probe structural tube and fuel pipe. The pipe was double-walled, and passed through into the fuselage aft of the flight deck; [\u2026] A non-return valve was fitted within the fuel pipe aft of the probe nozzle, thus preventing any leakage of fuel if the aircraft lost the probe nozzle inadvertently."@en . _:vb6983535 . . _:vb6983534 "A rigid tube that transports water, steam, or other fluid, as used in plumbing and numerous other applications. [from 10th c.]"@en . _:vb6983535 "2006, Richard M. Tanner, \u201CLockheed Tristar: Single-point Tanker\u201D, in History of Air-to-air Refuelling, Barnsley, South Yorkshire: Pen & Sword Aviation, Pen & Sword Books, \u2192ISBN, part 2 (Technology), page 286, column 1:"@en . "2.1" .