Solenoid valve for a wheel antilockup system

A solenoid valve in combination with a hydraulic brake circuit of a motor vehicle with a wheel antilock device, the solenoid valve disposed between at least a pressurized fluid source and a pressure receiver and comprising, in a body, piston means displaceable between a rest position, in which the pressurized fluid source communicates with the pressure receiver, and a work position, in which the pressure receiver communicates with a low-pressure fluid reservoir, characterized in that the piston means is stressed permanently toward the rest position by a constant force resulting from an operable mechanism effecting a single constant fluid pressure acting on a constant surface of the piston means in each position of the piston means, the piston means comprising a first slide valve, the constant surface of the piston means comprising the difference between the cross-sections of two bearing surfaces of the slide valve, and the operable mechanism comprising a pressure limiter providing said constant fluid pressure from the pressurized fluid source.