timeline item
Here is the information we have
on the item you selected
More like this
| |
sign up for our newsletter
© 2017 Engineering Timelines
engineering timelines
explore ... how   explore ... why   explore ... where   explore ... who  
home  •  NEWS  •  search  •  FAQs  •  references  •  about  •  sponsors + links
Littleton Pumping Station
Ashford Road, Laleham, Middlesex, UK
associated engineer
Metropolitan Water Board (London)
date  1924
era  Modern  |  category  Water Supply/Pipes  |  reference  TQ059696
Littleton Pumping Station supplies the adjacent Queen Mary Reservoir with water from the River Thames, near Weybridge, south-west of London. Reservoir and pumping station were constructed at the same time and remain fully operational.
The pumping station is in two parts. The largest building is the engine hall, with the boiler house adjoining to the rear (south). Both are red brick with sandstone bands and dressings. The metal truss roofs are clad in Westmoreland slate, with raised lantern lights along the ridges, though only the one over the boiler house is fully glazed.
The symmetrical main (north) elevation has a central pedimented portico supported by Doric columns leading to a pair of 3m tall mahogany panelled doors. The steel frame windows and most of the fittings and detailing, externally and internally, are original.
The interior of the engine hall has an elevated office for the chief engineer with views over the whole space. The hallís pitched roof is lined with mahogany, with a metal gantry at cornice level. The interior walls have a glazed white brick finish down to dado height, below which are green glazed tiles.
The engine hall contains four horizontal 575kW uniflow steam engines close coupled to four centrifugal pumps. In a uniflow engine, steam is admitted at both ends of the cylinder by poppet valves and exhausted from the middle, so that flow in each half of the cylinder is in only one direction.
Steam-powered pumping ceased in 1970 and three of the pumps were modified to be operated by large direct current electric motors driven through reduction gearboxes. The original mercury arc rectifiers have been replaced with solid-state rectifiers. The remaining steam engine is not used but has been preserved in serviceable condition.
Power for lighting and auxiliary functions was supplied by two inverted vertical compound (enclosed) steam engines driving 25kW dynamos, also sited in the main hall. After electrification in 1970 one of the steam dynamo sets was preserved, though it is not useable.
The station pumps water from the Laleham intake channel into the 286ha Queen Mary Reservoir, and is located at its westernmost end.
Inverted compound engines: Ashworth & Parker
Reduction gearboxes: David Brown
Dynamos: Lancashire Dynamo & Motor Co
Centrifugal pumps and uniflow engines: Worthington Simpson, Newark
Research: ECPK
reference sources   CEH Lond

Littleton Pumping Station