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).
Blueprint of a Claudel-Hobson petrol pump regulating valve.
| Identifier | ExFiles\Box 61\3\ scan0283 | |
| Date | 30th October 1931 | |
| Air Unions. Needle valve. Cast Alum Body. Brass cups. Impregnated fabric diaphragm. Petrol connection. SCALE 1/1 CLAUDEL-HOBSON PETROL PUMP REGULATING VALVE [WEIGHT 1.0 lb.] ROLLS-ROYCE LIMITED P.D. 30 OCT 31 HA 11-9-31 11 | ||