A piloting section of a solenoid valve is integrated with a valve section and includes a tubular stem having a distal end placed in communication with the atmosphere and axially displaceable by the solenoid from a receded position, in which a shutter of the valve section is kept in a closing condition, to an advanced position corresponding to an opening condition of the shutter. The shutter has a hollow plunger coaxial with a tubular stem and defining an inner thrust chamber in which, in operation, in the receded position of the tubular stem a fluid pressure—which keeps the shutter in closing condition and which is released into the atmosphere—is applied to displace the shutter to the opening condition, through the proximal end of the tubular stem when it is displaced by the solenoid to the advanced position.