ELECTROMAGNETIC VALVE

1. Diaphragm electrovalve which is indirectly controlled by the fluid from the input piping (14) and comprising a body (1), a hood (9) affixed to the body (1), an electromagnet provided with a coil (2) disposed about the hood (9), a movable core (50) located within this hood (9) and adapted to shut off the leakage orifice (133) of a leakage channel (130) of the indirect control, a movable flap (70) joined to the body (1) through a flexible annular diaphragm (10) the inner plane edge (11) of which is laterally received in this flap (70), the outer edge (3) of the diaphragm (10) being secured on the body (1), this membrane (10) being provided with a pilot orifice (12) assuring the communication between the input piping (14) and a pilot chamber (15) of the electrovalve, characterized in that the leakage channel (130) is formed by a cylindrical tubule (131) where-above a circular land (132) is located in coaxial relationship with the tubule (131), and which is axially provided with the leakage orifice (133) and has at least one orifice (137) for the passage of the fluid on its periphery between the pilot chamber (15) and the inside of the hood (9), this circular land (132) being stationary and affixed to the hood (9) of the electrovalve, in that a tubular resilient sealing sleeve (135) forming a bellows is placed about the cylindrical tubule (131) of the leakage channel, one end of this sleeve (135) being secured on the end of the tubule (131) joining the circular land (132), and the other end being affixed to the movable flap (70), and in that this flap (70) which is axially provided with a channel (134) for the passage of the tubule (131) is free to slide without friction along the tubule (131).