Peephole for a network of canalisations, comprising at least one coupling sleeve enclosing a hinged coupling element

摘要

The peephole (10) has a side connection sleeve (20) with rotation axis, enclosing an articulated internal element (30) to be connected to a pipe. The internal element has an external surface (31) complementary to a spherical shaped inner surface (21) of the sleeve. The spherical shaped inner surface cooperates with the external surface of the internal element for forming a connection ball to pivot on an axis perpendicular to a rotation axis of the sleeve. The sleeve is provided with an internal stop unit for limiting pivoting angle of the internal element.