Summary

No 4 Spotswood Sewerage Pumping Station boiler located in the North Boiler House. Manufactured by Thompson & Co., Castlemaine Victoria in about 1895. One of six boilers that were installed to provide steam supply to four triple-expansion steam pumping engines and other auxiliaries prior to the opening of the Melbourne & Metropolitan Board of Works (MMBW) Spotswood Sewerage Pumping Station in 1897. The boiler is stamped BIA 935 with boiler inspection marks from 1919, 1921, 1922 and 1923.

Double furnace, internally-fired return multitubular boiler of dry-back scotch marine design rated at 300 horsewpower, incorporating Fox's corrugated furnace flues, 15 Galloway tubes, two water packets and overhead steam receiver. The boiler has been partially conserved for static display. This is one of two surviving boilers of the ten boilers that were installed at the pumping station between 1896 and 1909, Between 1897 and 1947 these boilers supplied steam for the pumping engines at Spotswood, which raised sewage from the Hobsons Bay and North Yarra Main Sewers and fed it into the head of the Outfall Sewer at Brooklyn, to begin the last leg of its passage to the Western Treatment Plant at Werribee. This boiler was originally installed opposite the most southerly coal bunker doors in the North Boiler House. It was used as an air receiver between 1952 and 1982. In 1990, it was relocated to the north east corner of the North Boiler House and prepared for static display by Lake Goldsmith Steam & General Engineering. In September 1996, it was returned to its original location.

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