| 摘要 |
A pressure actuated switch has a diaphragm mounted across a piston having a piston head. Movement of the piston under pressure variations acting on the diaphragm actuates the pressure switch. A support disc is provided for the diaphragm, the support disc being mounted between the diaphragm and the piston. The support disc is preferably made of a high tensile elastic material and has an outer annulus that extends beyond the piston head, an inner disc that is smaller in diameter than the piston head; and a flexible intermediate annulus cantilevered between the outer annulus and the inner disc.
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