| 摘要 |
<p>Valve with a metal diaphragm, in the form of a disc. This diaphragm comprises, from its periphery, a plane collar (20) intended to bear on the base part with a sealing effect, connected to the central part (25) upon which an actuation device is intended to act via several annular surfaces (22, 23, 24) which are staged from the bearing plane on the base part towards the outside, these annular surfaces being successively inclined from the outside towards the centre of the diaphragm, and from the base part towards the actuation device (22, 24) and parallel to the bearing plane of the diaphragm on the base part (23, 25), when an action is not exerted on the diaphragm. Application to the production of highly sealing valves for very pure fluids. <IMAGE></p> |
