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Publication of ES187849UpublicationCriticalpatent/ES187849U/en
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Publication of ES187849YpublicationCriticalpatent/ES187849Y/en
Perfected step key, characterized in that of the two coupling ends, one female and one male, the first is projected axially in an extension substantially away from the body of the valve, and widened so as to provide a flange seat; and because the second one is projected axially in a longitudinal one that admits the telescopic coupling of the fluid feeding tube and the sealing against leaks by means of a bolt, which receives threadedly. (Machine-translation by Google Translate, not legally binding)
Improvements in the assembly of connection devices in flexible pipes for high pressures. (Machine-translation by Google Translate, not legally binding)