| 摘要 |
According to the invention, this diaphragm valve is characterised in that it comprises a support plate 1 pierced by an eccentric orifice 2 and a flexible and elastic diaphragm 4 securely fastened in a sealed fashion to the periphery of the said support plate 1, except along one portion 9 of the said periphery distant from the said orifice 2, the said diaphragm 4 being elastically held flat against the said support plate 1 due to its own constitution and its peripheral link to the said support plate 1. Protection covering ventilation. <IMAGE>
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