Safety valve for e.g. pneumatic conveyor, contains closure body sealing ring covered by flow barrier ring

摘要

The sealing ring (18, 18) for the closure body (4) is at least partially covered by a flow barrier ring (19). The valve casing (2) contains at least one closure body which is movable along a guide bar (3). In the closed position, the closure body is pressed against at least one sealing ring on the inside of the casing.