| 摘要 |
The liquid, e.g. water passes through a flow channel (17). This has a closure, which opens/closes automatically dependant upon direction of flow. The closure can be opened manually by an opening device (40,43) with cam control (37-39). The closure has a back pressure valve (21) and closure parts (24, 30), which are relatively movable against spring pressure (32) within a valve housing (20). A control part (36) of the opening device is movably fastened to the valve housing. |
