| 摘要 |
A magnetic valve comprises a magnet coil (4), a valve shank (13) at the same time formed as a magnet armature, a valve plate (15) surrounding the valve shank (13), at least one valve seat (17) and a resetting spring (16) which holds the plate (15) to the seat (17) when the magnet coil (4) is switched off. The valve plate (15) is made separately from the valve shank (13) and contains an annular plate (25) of resilient metal with projecting teeth at least at the inner edge of the annular plate (25) and a coating (28) of elastic plastics sprayed on to the plate (25) to leave at least part of the teeth uncoated. In comparison with a rigid valve plate made in one piece with the armature, this valve plate is adaptable to unevennesses of the valve seat so that a tight sealing effect is obtained but it is nevertheless adequately strong to transmit the necessary actuating forces and withstand the fluid pressures without markedly bending.
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