DIRECTION SELECTOR VALVE WITH LOAD COMPENSATION

PROBLEM TO BE SOLVED: To simplify the connection of a detection circuit for load pressure and a signal circuit for introducing the detected load pressure to a control valve, make a valve structure compact and allow an easy design change for application to a multiple valve, regarding a direction selector valve device having a control valve installed apart from an open center type direction selector valve, and introducing the load pressure of an actuator to the control valve for the selection thereof. SOLUTION: A spool 201 is inserted in and coupled to the spool hole 200a of an S-block 200, and bypass ports 204a, 204b and 204c are formed at the surrounding center of the spool 201. Various ports including signal ports 208a and 208b are also formed at the right and left sides of spool 201. In addition, the first and the second oil ports 202 and 203 are provided right and left within the spool 201 separately. Also the S-block 200 and a T-block 300 are formed to have the first and the second signal ports, and the first and the second signal circuits 209 and 301, and 210 and 302 are arranged right and left separately, so as to be communicated and connected to the pressure receiving chamber 12r of a control valve 12 laid downstream of the bypass ports 204a, 204b and 204c.