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).
General arrangement drawing of a pressure loading valve.
| Identifier | ExFiles\Box 156\2\ scan0205 | |
| Date | 22th September 1938 | |
| DRAWING NOT TO BE SCALED PLV/A/47C ALTERATIONS A.{Mr Adams} THIMBLE ADDED TO PROTECT ADJUSTING SCREW. B. 3466 TRACED & THIMBLE REGISTER ADDED 22.9.38 C. PATENT No ADDED 17/12/38 3651 PATENT No 22048/38 TO BE STAMPED HERE 2 5/8 DIA 1 HEX. 1.67" A/F ADJUSTING SCREW 2 11/32 1 9/16 1/2 1" HEX. (1.67" A/F) NEOPRENE SEAT SCREWED 2 1/4 DIA X 16 T.P.I. R.H SCALE:- FULL SIZE STANDARD SETTING- PRESSURE VALVES OPEN AT 5 LBS/□ VACUUM VALVES OPEN AT -3 LBS/□ GENERAL ARRGT. OF PRESSURE LOADING VALVE. OFF PER SET DR'N K.S. APP. CH'K S.M.D TRC'D S.M.D DATE 22.9.38 WORKING LENGTH + OR - FACE AREA □ MACHINED DIMENSIONS WITHOUT LIMITS TO BE WITHIN 1 OF SIZE MATERIAL ⊕ MACHINED ALL OVER f MACHINED G GROUND SUPERSEDES SUPERSEDED BY PART No. PLV/A/47C THE BRITISH THERMOSTAT CO. LTD. TEDDINGTON WORKS. WINDMILL ROAD. SUNBURY. MIDDLESEX. | ||