Dual circuit brake valve
    2.
    发明授权
    Dual circuit brake valve 失效
    双电路制动阀

    公开(公告)号:US3580646A

    公开(公告)日:1971-05-25

    申请号:US3580646D

    申请日:1969-09-17

    Inventor: TERNENT GEORGE E

    CPC classification number: B60T15/046 Y10T137/86919

    Abstract: A dual circuit brake valve including first and second selflapping valve elements for respectively controlling primary and secondary fluid pressure braking circuits, the first valve element being manually controlled and the second valve element being controlled by a relay piston subject to the pressure in the primary circuit wherein the relay piston is subjected to the action of a pair of springs acting in opposite directions so that during operation of the first valve element the crack pressure required to open the second valve element is reduced to a minimum and the application of fluid pressure to the primary and secondary circuits is substantially simultaneous.

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