Valve for fluid conductions with peripheral gasket. (Machine-translation by Google Translate, not legally binding)

摘要

Valve for fluid lines with peripheral seal, whose valve comprises a rotating closing butterfly provided with a peripheral seal having a section of trapezoidal general shape or similar, whose base is maintained in a throat of said butterfly by means of a counter-plate incorporated, whose valve is characterized in that the base of said gasket (9) has a recess (13) forming at the bottom of the throat (10) of the rotary butterfly (4) an annular cavity (14) capable of serving as a space for expansion in case of deformation of the joint due to rubbing against the internal wall of the valve body as a consequence of the rotation of the throttle valve. (Machine-translation by Google Translate, not legally binding)