Safety valve (1) for a trailer brake circuit of a vehicle-trailer combination comprising a control line for controlling a respective brake of the trailer brake circuit, the safety valve (1) comprising a first opening (2) fluidly connected to receive a first pilot signal (X1) derived from a trailer brake valve, a second opening (3) fluidly connected to receive a second pilot signal (X2) derived from the control line, a third opening (4) fluidly connected to a source of fluid in pressure, a fourth opening (4) fluidly connected a supplementary line brake and a fifth opening (6) fluidly connected to a discharge (7),the valve (1) comprising a main spool (8) fluidly connected to third, fourth and fifth openings (4, 5, 6) and configured to selectively allow the passage of fluid in function of the equilibrium between first and second pilot signals (X1, X2), and a selection spool (15) configured to selectively allow the passage of second pilot signal (X2) to main spool (8) in function of the activation of a park brake of the vehicle-trailer combination.


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    Title :

    IMPROVED SAFETY VALVE FOR HYDRAULIC BRAKE CIRCUIT


    Additional title:

    VERBESSERTES SICHERHEITSVENTIL FÜR EINE HYDRAULISCHE BREMSANLAGE
    VALVE AMÉLIORÉE POUR UN DISPOSITIF DE FREINAGE HYDRAULIQUE


    Contributors:

    Publication date :

    2024-06-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF



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