AUTOMATIC VALVE Russian patent published in 2013 - IPC F16K15/02 F04B39/10 

FIELD: machine building.

SUBSTANCE: automatic valve includes a seat, a lift limiter and shutoff elements arranged between them. Each shutoff element is pressed to the seat by means of at least one pair of constant magnets facing each other with their similar poles. Magnets are fixed in shells-holders from non-magnetic material, which are provided with longitudinal flats on external cylindrical surface. Shells-holders with magnets are installed so that they can be mutually moved in the seat of the lift limiter having an axial drain hole. At the bottom of lower shell, which faces the above hole, there formed are radially directed grooves deepening from the centre to the periphery and continued to flats on cylindrical surface.

EFFECT: improving operating reliability of the valve under conditions of polluted and humidified working fluid.

5 cl, 7 dwg