Non-return valve with displaceable valve body - has elastic buffer with sealing edge acting as damper for quieter action.

摘要

The elastic buffer part (8) has a sealing edge (10) for the valve body (5) and is set in the non-return section of the valve body (5). In this stretch, the valve body first sealingly strikes the sealing edge (10) and then deforms the buffer part so that the volume of the chamber (12) in front of the valve body increases and the buffer part breaks there turn movement of the valve body. A flow volume restrictor having a fixed perforated sleeve and displaceable perforated disc can be provided to act in the non-return direction. USE/ADVANTAGE - Non-return valve. Since the valve body is damped further after striking the sealing edge it does not hit against the stop.