Self closing water valve - has flat disc with central boss guided in valve seat and unloading chamber

摘要

The self-closing valve has a plunger working against a seat and forming a seal in the pressure cylinder in which it works, and in which it encloses an unloading chamber. A further valve with actuating member is mounted between the outlet and the unloading chamber. The plunger is formed by a flat disc (6) with a central boss (7) guiding it in the bore (4) of the valve seat (5) above it. On its boss side towards the seat it supports a sealing sleeve (8) both forming the valve seal and that for the unloading chamber below, the plunger being also guided an the latter chamber.