Allen 3S30
| 3686 | |
| Allen 3S30 | |
| Engine | |
| K1/21518 | |
| 1930-01-01 | |
| Originally thought to be supplied as a single engine contract to the East Surrey Water Company, Leatherhead and then later moved to Woldingham Pumping Station. This was based on the works number K1/24744 from the works plate. However, once restoration started the engine was found to have the works number K1/21518. Donated by SEAMS in 2012 | |
| On Display | |
| Running | |
| W. H. Allen Sons and Co. Ltd | |
| Bedford, England | |
| IF:2012:002 | |
| Yes | |
| 2012-01-12 | |
| W.H. Allen Heritage | |
 Block on crankcase Installed in Hall 4 On arrival On arrival Rebuild Rebuild, crank in Rebuild, lifting a liner assembly Rebuild, piston and rod in barrel/head with props fitted for lifting Rebuild, two heads on | |
