Rexroth-sigma

Olivier Isaac

Louis Pignolet

Distributor comprising a body provided at least with one pressurized fluid inlet port (P), one return port for the fluid to a tank (T), two connecting ports (A, B) to a hydraulic apparatus or component, and a slide valve adapted to slide in a bore of the distributor body, and comprising locking means (B) for the slide valve and unlocking means actuated mechanically. The slide valve is formed of at least two parts assembled rigidly to one another and a pressure selector (S) is arranged inside the slide valve, this pressure selector comprising two inlets and an outlet, and being adapted to compare the two pressures on its inlets and to provide, at its outlet, the highest pressure, connecting means being provided in the distributor body and in the slide valve to connect the two inlets of the selector respectively to the two connecting ports (B, A) of the distributor, and to connect the outlet from the selector to a channel opening outside the distributor body. The distributor comprises means sensitive to the outlet pressure of the selector (S) adapted to control the actuation of the unlocking means when the outlet pressure of the selector (S) passes through a predetermined limit.

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Lyons, France

Olivier Isaac