Fig. 4.15. The operating valve with a straight-line characteristic

The operating valve with a straight-line characteristic (fig. 4.15) consists of the C-valve, the pro-carved valve and the folding valve. These valves have a multilayered design and form a diaphragm. At low speeds of the piston oil passes through cuts of valves, than linear damping is reached (see fig. 4.16).

Fig. 4.16. Characteristics of the damping force

Use of the operating valve with a straight-line characteristic allowed to provide linear change of force of damping at low speeds of the piston, thus the car behaves more smoothly concerning steering work.