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Steam Pumping Engine - Austral Otis, No.7 Pumping Engine, MMBW Spotswood Sewerage Pumping Station, 1911 Object Reg. No: ST 038264

In 1902 the Melbourne & Metropolitan Board of Works began operating a new steam pumping engine at the Spotswood sewerage pumping station. It was built by Hathorn Davey & Co. of Leeds, UK. This engine was an inverted vertical rotative direct-acting triple-expansion surface-condensing design, it featured fully steam-jacketed cylinders and inter-cylinder steam receivers. This engine proved to be 70% more efficient than the four locally-built Thompson & Co Worthington type triple-expansion engines installed at Spotswood between 1895 and 1897 and 28% more efficient than the single Austral Otis pumping engine installed in No. 6 pumping well in 1901.

When the MMBW required additional pumping engines in 1909, Austral Otis were asked to prepare plans for four new engines, this time based largely on the successful Hathorn Davey design, with a few minor modifications. The first two new Austral Otis engines were commissioned in June and July 1911, followed by the remaining two in mid-1914. Four additional boilers, again supplied by Thompson & Co. of Castlemaine, were installed in 1909 in preparation for these engines. This brought the plant at the pumping station to a total of ten manually-stoked coal-fired boilers and ten steam pumping engines, each of about 300 horsepower, with a combined pumping capacity of 80 million gallons per day (363 ML/day).

This engine is located in the No. 7 pumping well at the southern end of the North Engine Room. It was installed in 1911.
Acquisition Information:
Donation from Melbourne Water, 1989
Discipline: Technology

More information

Tagged with: sewerage, sewerage works, spotswood sewerage pumping station, steam engines
Themes this item is part of: Engineering Collection, Working Life & Trades Collection, Spotswood Sewerage Pumping Station, Melbourne, Victoria, Austral Otis Pumping Engine No.7, Spotswood Pumping Station, Melbourne & Metropolitan Board of Works (MMBW), Melbourne, Victoria
Primary Classification: MECHANICAL ENGINEERING
Secondary Classification: Steam Power
Tertiary Classification: stationary steam engines
Manufacturer: Austral Otis Engineering Co Ltd, South Melbourne, Victoria, Australia, Jun 1911
User: Melbourne & Metropolitan Board of Works (MMBW) Spotswood Pumping Station, Australia, 1911-1965

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