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Pneumatic valve that consists essentially of an encircling cylinder, equipped with two internal diameters that form separate chambers separated by a step, in the largest of which is embedded a bushing with the outer edge equipped with a conical lip, against which it is pushed a ball, slightly protruding from the level of the enclosing cylinder, whose ball is pressed by means of a spring supported by the opposite end on a washer fixed on the internal flange of the bushing, while the enclosing cylinder has at the opposite end to the output end, a tubular extension in the form of a rounded edge nozzle and with a protruding flange in the manner of a wedge, for fixing the tubular conduit inserted in the nozzle. (Machine-translation by Google Translate, not legally binding)
Improvements in the devices for the assembly with pressure oil, of a pressure lace union (Machine-translation by Google Translate, not legally binding)