Squeezing valve for locking and releasing conveying stretch, has connecting areas arranged at angle about middle axis of tube unit, which is fixed at connecting areas of end pieces by vulcanizing

摘要

The valve has a flexible tube unit (4) arranged between two end pieces (2, 3) and including circular inner lips (40, 41) and circular outer lips (42, 43) at each of its axial ends. The end pieces have annularly circulating, protruding connecting areas (20, 30), which are arranged between the inner and outer lips. The connecting areas of the end pieces are arranged at an angle about a middle axis of the tube unit. The tube unit is fixed at the connecting areas of the end pieces by vulcanizing.