ultra3333 MM BUT AERO The streamd desn of the central part of the hub decreases the frontal area of the component whilst the special desn of the flanges favours the shut-off of the flowRoute de Trélex 10 CH 1266 Duillier Tél. +41 22 364 22 70 Fax +41 22 364 52 73 ultra-son.ch [email protected] Ultra – 33 T et 43 T