Solenoid valve

A solenoid valve comprising three mouths and three operating positions, wherein said three mouths comprise:

• a first mouth for inlet of a working fluid;
• and
• a second mouth and a third mouth for outlet of the working fluid, and wherein said three operating positions comprise:
• a first operating position, in which a passage of fluid from said first mouth to said second mouth and third mouth is enabled,
• a second operating position, in which a passage of fluid from said first mouth to only one of said second and third mouths is enabled, and
• a third operating position, in which the passage of fluid from the first mouth to the second mouth and the third mouth is disabled,
• said solenoid valve further comprising an electromagnet that can be controlled to cause a switching of the operating position,
• wherein the solenoid valve comprises a first open/close element and a second open/close element co-operating, respectively, with a first contrast seat and a second contrast seat, wherein said first open/close element and said first contrast seat are provided for controlling the passage of fluid from said first mouth to said third mouth, and wherein said second open/close element and said second contrast seat are provided for regulation of the passage of fluid from said first mouth to said second mouth, and
• wherein said solenoid can be actuated for impressing on said second open/close element:
• a first movement whereby said second open/close element is brought into contact with said second contrast seat disabling the passage of fluid from said first mouth to said second mouth providing a switching from said first operating position to said second operating position,
• a second movement, subsequent to said first movement, whereby said second open/close element moves said first open/close element against said first contrast seat disabling the passage of fluid from said first mouth to said third mouth and providing a switching from said second operating position to said third operating position,
• wherein during said second movement the second open/close element is in contact with said second contrast seat,
• wherein said first open/close element and second open/close element are coaxial to one another and hydraulically balanced,
• wherein the solenoid valve comprises a jacket slidably mounted within which is said first open/close element, wherein said first mouth, second mouth, and third mouth of said solenoid valve are provided on said jacket, and
• wherein said first contrast surface is provided on said jacket and said second contrast surface is provided on said first open/close element.