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).
Dimensional specifications sheet for 'SAMSON' automatic temperature regulators.
| Identifier | ExFiles\Box 78\3\ scan0179 | |
| Date | 1st July 1921 guessed | |
| THE STEAM FITTINGS Co. Ltd., West Drayton, Mdx. "SAMSON" Automatic Temperature Regulators DIMENSIONS OF STANDARD REGULATORS. Room Type. Liquid Type. Dimensions are approximate and subject to confirmation. Valve Controller should always hang downward. TABLE DATA: Valve Diam. (") | ½ | ⅝ | ¾ | 1 | 1¼ | 1½ | 2 | 2¼ | 2½ | 3 | 3½ | 4 | 5 | 6 -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- L In Gun Metal (") | 3 | 3 | 3½ | 4 | — | — | — | — | — | — | — | — | — | — L In C.I. Gun Metal Fitted (") | 3⅜ | 3⅜ | 4⅛ | 4¾ | 5¼ | 6 | 7 | — | — | — | — | — | — | — L1 In Gun Metal (") | — | — | — | — | 5¼ | 6 | 6½ | 8¼ | 8¾ | 9½ | 10 | 11½ | 12⅝ | 15 | 18 L1 In C.I. Gun Metal Fitted (") | — | — | — | — | 5¼ | 6 | 6½ | 8¼ | 8¾ | 9½ | 10 | 11½ | 12⅝ | 15 | 18 D* (") | 3¼ | 3¼ | 4 | 4½ | 4¾ | 5¼ | 6 | 6 | 6½ | 6¾ | 7¼ | 8 | 8½ | 10 | 11 D1* (") | 2⅜ | 2⅜ | 2⅞ | 3¼ | 3⅜ | 3⅞ | 4½ | 4½ | 5 | 5 | 5¾ | 6½ | 7 | 8¼ | 9¼ Number of Screws | — | — | — | — | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 8 | 8 Screw Dimensions (") | — | — | — | — | ½ | ½ | ⅝ | ⅝ | ⅝ | ⅝ | ⅝ | ⅝ | ⅝ | ⅝ S (") | 9¾ | 9¾ | 10 | 10 | 10½ | 10½ | 11½ | 12¼ | 12½ | 13 | 13 | 14 | 18 | 19 | 21½ W (") | 12 | 12 | 12 | 14 | 15 | 17 | 19 | 20¼ | 21¼ | 23 | 25½ | 27½ | 30½ | — | — T (") | 20 | 20 | 20 | 20 | 20 | 20 | 25½ | 25½ | 25½ | 25½ | 31½ | 31½ | 35½ | 40 A (") | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 * British Standard Table 1. If Flanges Table 2 are required, this should be specified. | ||