| 摘要 |
Flow casings for oil valves are known, having: a locating housing (10) in which a valve housing (20) is arranged in a locating bore (12) of the flow casing (10); at least two fluidically connectable connection nozzles (14, 16, 18) which are formed in the flow casing (10) and are fluidically connected to a corresponding number of bores (22, 24, 26) in the valve housing (20); at least one peripheral surface (28) on the valve housing (20) which is arranged axially between the bores (22, 24, 26) and on which a groove (36, 38, 40) is formed; and at least one seal ring (42, 44, 46) which is arranged in the groove (36, 38, 40) on the peripheral surface. In order to achieve as simple an assembly as possible while ensuring the required sealing, it is proposed that the seal (42, 44, 46) has a higher coefficient of thermal expansion than the locating housing (10). In this way, the valve housing (20) can be designed with only a clearancewfit over the locating housing (10). Damage to the seal rings (42, 44, 46) during assembly is prevented. |
