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).
Urgent internal request detailing the specifications for a stop cock valve.
| Identifier | ExFiles\Box 143\1\ scan0014 | |
| Date | 14th May 1934 | |
| X 3269 To EJJ. Hs{Lord Ernest Hives - Chair}/FJH.{Fred J. Hardy - Chief Dev. Engineer}4/KW.14.5.34. Will you please obtain for us a stop cock to the following particulars :- (1) Valve to be of screw down type and to be oil tight under 2000 lbs/sq.in. pressure of cold oil. (2) Bore to be either 3/16" or 1/4". (3) Valve need not necessarily be of straight through type. (4) Valve should have a union connection on one side and be screwed 0.500 x 25 male thread on opposite side. This stop cock is very urgently required. Hs{Lord Ernest Hives - Chair}/F.{Mr Friese} J.{Mr Johnson W.M.} Hardy. | ||