Fluid control system

Claim 1

In a fluid control system having a source of fluid and being adapted for sequentially moving first and second work-performing elements into extended position, a pilot sequence valve comprising: A valve body having a chamber; A fluid responsive member provided within said chamber for axial movement therein responsive to fluid pressure; First conduit means for communicating the valve chamber with said source of fluid; Second conduit means communicating said valve chamber with said first work-performing element; Third conduit means for communicating said valve member with said second work-performing element; Fluid pressure means for moving said fluid responsive member into first and second positions; Wherein said first position, communication is established between said first and second conduit means for extending said first work-performing element; And in said second position, communication is established between said first and third conduit means for extending said second work-performing element; Said fluid pressure means including fourth conduit means communicating said source of fluid with said valve chamber adjacent to one end portion of said fluid responsive member for urging same into its first position; Said first work performing element having a port adapted for opening when said first work-performing element is in a fully extended position; Fifth conduit means communicating said port with said valve chamber adjacent the other end portion of said fluid responsive member for urging same into its second position when said first work-performing element has been fully extended.