PILOT VALVE FOR BRAKING OR LIMITING SPEED IN A HYDRAULIC CIRCUIT

摘要

The invention relates to a valve for retaining a cylinder 1 retaining a driving load 2. The brake valve 7 comprises two stages 15 and 16, one of which secures the retention of the engine. THE PRESSURE IN THE CHAMBER 4, WHILE THE OTHER MODULE THE STEERING PRESSURE P. SO AT EACH INSTANT, THE STEERING PRESSURE P IS ADAPTED TO THE VALUE OF THE RETENTION PRESSURE P / P P APPLICATION : SUPPRESSION OF A-COUPS IN RETAINING OF LOAD 2. / P