To provide a low pressure casting device suitable for producing a light alloy wheel for a vehicle in which the angle of a tapered part is narrow.

The low pressure casting device to a light alloy wheel for a vehicle is provided with a hydraulic cylinder for elevating and lowering a movable platen and an equilibrium control driving apparatus synchronously pushing up the movable platen at three or more parts differently from the hydraulic cylinder. As the equilibrium control driving apparatus, the one moving the movable platen parallel to a height of 20 to 30 mm is preferably used.