A radiator includes a neck including a pair of openings and a plurality of threads configured to engage a plurality of threads disposed within a radiator cap. In use, the user can fit a trash bag inside the liner, and then seat the liner inside the shell. Thus, the main hollow body and the striking plate can be connected securely together by pressing the striking plate against the main hollow body to such an extent that the protrusions are deformed and got stuck in flared corners of the annular groove. Along at least a part of the axial extension of the current-carrying device the outer shell extends axially with a space between its inner periphery and the current-carrying device. An embodiment of a method may include synchronizing a signal on a first memory channel with unidirectional links with a signal on a second memory channel with unidirectional links. The coupling apparatus includes a ball valve including a common port and at least two selectable ports, and a valve member manually movable among a closed condition, wherein the common port is connected to neither selectable port, and three open conditions wherein the common port is connected, respectively, to each of the selectable ports and both of the selectable ports.