| 摘要 |
The invention relates to a swivel-type coupling device enabling relative rotation between heating fluid conveying conduits of a domestic heating radiator unit connected thereto. The swivel-type coupling device comprises: a first cup-shaped member having an axial bore extending therethrough and being connectable to a first heating fluid conveying conduit, a second cup-shaped member having an axial bore extending therethrough and being connectable to a second heating fluid conveying conduit. The cup-shaped members are coaxially arranged with their hollow portions facing one another, in order to form an axial cavity which communicates with heating fluid conveying conduits. A bushing is arranged to slide axially within the axial cavity and is capable of providing a fluid-tight seal of the axial cavity. A resilient element is interposed between the bushing and the first cup-shaped member of the coupling device. |
