Plate-type no-return valve to prevent backflow has inflow side sealing ring which is also seat seal

摘要

The no-return valve has a valve housing (2), an inflow connection (1), an outflow connection (3) with a guide (3') for a valve plate (4), a valve spring (6), a valve seat and sealing rings (7, 7') between the housing and the connections. The inflow side sealing ring is also a seat seal. The guide may be integrated into the housing.