Sica S.p.a.

Iveco S.p.a.

Giovanni Vecchi

Giorgio Tabanelli

A PVC-O pipe has an axis of symmetry, a main longitudinal extension in a direction parallel to the axis from first to second ends, an inner chamber passing from the first to second end and a seal, positioned in a respective housing seat, with circumferential extension relative to the axis. The seal has an inner surface, facing the inner chamber, and an outer surface, facing the housing seat. The outer surface has first and second contiguous portions defining a cusp. The first and second portions are inclined relative to a parallel direction by respective acute angles. The inner chamber has a taper leading externally at the first end, having a divergent shape. The taper has an inclination relative to the parallel direction equal to an acute angle whose value relates to the value of the acute angle of the first portion, relative to the parallel direction.

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Alfonsine, Italy

Giovanni Vecchi