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Priority to ES1972180721UpriorityCriticalpatent/ES180721Y/en
Publication of ES180721UpublicationCriticalpatent/ES180721U/en
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Publication of ES180721YpublicationCriticalpatent/ES180721Y/en
Improved butterfly valve, characterized in that the inner edge of the body on which the butterfly is adapted is provided with a ring of elastic closure, u-section, whose wings overlap on both sides said inner edge, so that they receive the pressure side of the pipe mounting flanges; the ring core has two diametrically opposed holes, through which a lower support and rotation shaft and the upper drive shaft, whose orifices have collars that embrace said axes, access. (Machine-translation by Google Translate, not legally binding)