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).
Instructions for setting the Phantom III radiator steam valve.
| Identifier | ExFiles\Box 94\3\ scan0214 | |
| Date | 16th June 1937 | |
| To By.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/Std. c. to RHC.{R. H. Coverley - Production Engineer} c. to Br.{T. E. Bellringer - Repair Manager} PH.III. RADIATOR STEAM VALVE - Setting of same. As we have already pointed out (Rm{William Robotham - Chief Engineer}/Std.9/AP.30.4.37) the Ph.III. radiator steam valve is perfectly satisfactory if correctly set i.e. to blow at 2 1/2 lbs/sq.in. ± 1/4 lbs/sq.in. The setting can only be done by pressure testing, owing to variations in diaphragm strength, and the adjustment of the valve seat relative to the diaphragm valve can be done in two ways - (1) By a cutter which removes metal from the valve stand pipe. (2) By adjusting washers beneath either or both the steam chamber tower and the standpipe. The former method is probably the best for future production, but for existing cars, the latter method is the only way of accurately resetting the valve. Will By.{R.W. Bailey - Chief Engineer} therefore please detail and instruct the necessary adjusting washers so that steam valves on customers cars can be checked and set if they are complaining of water loss or overheating, and will RHC.{R. H. Coverley - Production Engineer} please let Br.{T. E. Bellringer - Repair Manager} have a supply of these washers for this purpose. It is important that the checking of steam valves should be instituted on Production at the earliest possible moment. Rm{William Robotham - Chief Engineer}/Std. | ||