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Rennequin Sualem (1645 − 1708) was a Walloon carpenter and engineer .
Rennequin Sualem was born in 1645 in Jemeppe-sur-Meuse, France. In 1667−68 Lieutenant-Governor of the castle of Huy ordered the building of an hydraulic machine to pump up the water of the Hoyoux to his Castle in Modave, 50 m (160 ft) higher. Rennequin Sualem was commissioned to build the mechanism.
This mechanism is the model of the huge Machine de Marly which lifted the waters from the Seine to the palace of Louis XIV in Versailles, in this case 150 m (490 ft) higher. Rennequin built also a pump for the coalmine of Decize. The originality of the Rennequin's performance in Versailles was a transfer of a Walloon technology with a change of size which let reach it to its limits..
Rennequin died in Bougival, France in 1708, at the machine.