A rail used as a torsional stop for the valve train of an internal combustion engine is disclosed. The base stations configured to support a particular wireless system standard, such as IS-95 CDMA, by assigning particular user signals to designated signal lines of the reconfigurable bus. The transfer assist blade includes a wear layer having a surface resistance of greater than about 1010 ohms. The diaphragm valves and the outlet valves are commonly operated via respective pneumatic actuators.