| 摘要 |
An aseptic double-seat valve has a housing (12) which has connectors (14, 18) for two pipelines (16, 20), a first valve seat (28) and a second valve seat (32), wherein the valve seats (28, 32) are arranged in the housing (12) spaced apart from one another in the direction of a longitudinal axis (22), between the connectors (14, 18) for the two pipelines (16, 20), a first closing body (24) which interacts sealingly with the first valve seat (28), and a second closing body (30) which interacts sealingly with the second valve seat (32), a first elongate valve stem (40) which is of concave configuration and is connected to the first closing body (24), and a second elongate valve stem (42) which extends through the interior of the first valve stem (40) and is connected to the second closing body (30), and a diaphragm (78) which has a radially inner opening (80) for sealing a gap (76) which is present between the first valve stem (40) and the second valve stem (42), wherein an outer edge (84) of the diaphragm (78) is fixed sealingly to one of the two closing bodies (24, 30) and an inner edge (82) of the diaphragm (78) is fixed sealingly to one of the two valve stems (40, 42). The outer edge (84) of the diaphragm (78) is fixed sealingly to the second closing body (30), and the inner edge (82) of the diaphragm (78) is fixed sealingly to the first valve stem (40). |
