shock absorber components , such as a radial bypass damper , an anti - cavitation valve and an incremental flow metering valve ifmv . the damper is of a continuous , unitary construction with a main hole and auxiliary holes interconnected by passageways . the acv has openings that angle obliquely relative to entry surfaces of valving shims and extend at an incline continuously through the valving shims . the metering valve linearly regulates flow , substantially independent of piston displacement .