The lower end 28 is adapted to be engaged with a suitable air supply (not shown) that forms part of a central tire inflation system 1000 (Fig. 15) including a central controller 500 (Fig. 21) connected to the air supply 1002 (Fig. 15) to direct the air through suitable conduits 1004 (Fig. 15) that extend to each of the tires 1006 (Fig. 15) of the vehicle, such as along or though the axle of the ve