From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Diagram and notes regarding a flap valve on the fuel inlet of an Autovac tank.
| Identifier | ExFiles\Box 40\4\ Scan138 | |
| Date | 3rd November 1925 guessed | |
| FLAP VALVE ON FUEL INLET AUTOVAC TANK Valve A was made exactly similar to B. It was lapped in for a good joint, and was fixed to discharge the fuel in direction shown by arrow to avoid splashing on float. Note: The little strainer at C was already half choked with fluff in 2400 miles of running and has been taken out as it appears too small to be useful. | ||