(57) Deflector element (1), comprising a first tubular portion (5) of predefined axis
(X-X), forming a first stretch of pipe (6), said first tubular portion (5) comprising
a first opening (9) for said first stretch of pipe set in a first end (7) and a back
wall (10) set in a second end (8), said back wall comprising a second opening (11)
for the pipe, also comprising a second tubular portion (12) forming a second stretch
of pipe (13), comprising a third opening (14) set level with said first end (7), said
second tubular portion (12) connecting by sealing to said back wall (10) and forming
a fourth opening (15), said second opening (11) and said fourth opening (15) being
set so as to change position, when the deflector element (1) is rotated around its
axis (X-X), said deflector element (1) comprising operating means (16; 17; 18) for
said deflector element.
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