844 Hydraulics Course Notes — Page 73

Turing position : the recoil of the piston F provokes : - the return of the fluid across valve.( C ), - the compression of spring ( B ) which pushes the sleeve (A ) thus uncovering the orifices (D ). we « Return » position * The fluid passes by the channel ( E ) (valve (C) closed ) and by the calibrated hole (1) thus pro- the recoil of the sleeve (A ). - The sleeve ( A ) therefore lightly compressing the spring ( B ), slowly comes back to cover ‘the orifices ( D ) progressively, as the piston ( F ) is displaced. 71