Vacuum Pasteuriser [Vacreator, sectioned model]
Maker and role
Murray Deodorizers Limited, Manufacturer
Production date
1961
1990
See full details
Object detail
Accession number
1990.14
Description
Vacreator - a vacuum unit operated by steam and water which produces a vacuum in the separator chambers. There the cream and steam is mixed and passed through the 4 separator chambers where the cream is passed off for further processing into butter. The steam is returned back though a Heat Exchanger (Economajor) heating water for further use in the factory. The entire system is made of stainless steel.
Brief History
This New Zealand invention of the 1920s was developed to remove unwanted flavours from cream. These flavours came from the weeds and poor pasture that the cows were eating. The vacreator process is now used throughout the world.
Work started on the Vacreator in 1923, when H. Lamont Murray and Frank S. Board, were about to open their butter factory in Te Aroha. They wanted those flavours removed from the cream so that they could get a better price for their butter overseas. In the vacreator the cream is mixed with steam, which both pasteurises (kills micro-organisms) and deodorises (removes unwanted smells and tastes) the cream. With the unwanted flavours removed, the butter could be kept frozen for up to two years.
In 1929, Murray Deodorisers Limited was formed to take over from the Te Aroha Dairy Company Limited, and to develop the equipment further and promote sales. Murray worked as Managing Director of the company.
Refined in the 1930s, the process was first used at Northern Wairoa Cooperative Dairy Company in Dargaville. Commercial versions of various capacities were made and sold to New Zealand, Australian, South African and Argentine butter factories.
Work started on the Vacreator in 1923, when H. Lamont Murray and Frank S. Board, were about to open their butter factory in Te Aroha. They wanted those flavours removed from the cream so that they could get a better price for their butter overseas. In the vacreator the cream is mixed with steam, which both pasteurises (kills micro-organisms) and deodorises (removes unwanted smells and tastes) the cream. With the unwanted flavours removed, the butter could be kept frozen for up to two years.
In 1929, Murray Deodorisers Limited was formed to take over from the Te Aroha Dairy Company Limited, and to develop the equipment further and promote sales. Murray worked as Managing Director of the company.
Refined in the 1930s, the process was first used at Northern Wairoa Cooperative Dairy Company in Dargaville. Commercial versions of various capacities were made and sold to New Zealand, Australian, South African and Argentine butter factories.
Marks
VACREATOR CREAM PASTEURISING PLANT / IPENZ RECOGNISES THIS ENGINEERING WORK AS AN / IMPORTANT PART OF N.Z.'S ENGINEERING HERITAGE. / INVENTED BY LAMONT MURRAY IN 1923 TO DEODORISE / CREAM WITH STEAM PRIOR TO BUTTERMAKING IT IS NOW / USED IN BUTTER FACTORIES WORLD WIDE. / DEVELOPMENT: MURRAY DEODORISERS, N.Z. DAIRY RESEARCH AND / PROTECH ENGINEERING LTD / MANUFACTURER: PROTECH ENGINEERING LTD / [...] Embossed
Media/Materials
Other name
Vacreator
Economic Vacreator
Economic Vacreator
Credit Line
Murray Deodorizers Limited. 1961
1990. Vacuum Pasteuriser [Vacreator, sectioned model], 1990.14. The Museum of Transport and Technology (MOTAT).
1990. Vacuum Pasteuriser [Vacreator, sectioned model], 1990.14. The Museum of Transport and Technology (MOTAT).
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