Valve spool 1 is shifted by lever 2 which is connected by turning pairs A and B to spool 1 and to link 3. Link 3 turns about fixed axis E. Lands a of the spool divide the inner space of the valve into two chambers: chamber b, connected by port d to the high-pressure main, and chamber c, connected by port e to the low-pressure main. When spool 1 is shifted to its extreme left-hand position (as shown), fluid from the high-pressure main is directed to port f. In the extreme right-hand position of the spool, fluid from the low-pressure main is directed to port f.
$3924$LHP,FC$