Valve device

A valve device comprising left and right travel control valve units configured to control a flow of a working fluid supplied from a fluid pressure pump to left and right travel motors, wherein

• each of the left and right travel control valve units includes:
• a spool configured to be moved in an axial direction on the basis of a travel operation instruction;
• and
• a valve body slidably accommodating the spool;
• the valve body has:
• a supply passage to which the working fluid discharged from the fluid pressure pump is supplied;
• an actuator passage communicating with the travel motor;
• a discharge passage communicating with a tank;
• a lead-out passage leading the working fluid supplied from the supply passage to the actuator passage;
• and
• a communication path causing the lead-out passages of the left and right travel control valve units to communicate with each other;
• the spool has:
• a lead-out side land portion which is a land portion configured to cause communication or shut-off of the communication between the lead-out passage and the communication path, the lead-out side land portion being capable of shutting off the lead-out passage by an outer peripheral surface thereof;
• a discharge-side land portion which is the land portion configured to cause communication or shut-off of the communication between the actuator passage and the discharge passage, the discharge-side land portion being capable of shutting off the discharge passage by the outer peripheral surface thereof;
• a discharge portion provided at least either one of the lead-out side land portion and the discharge-side land portion and configured to discharge a part of the working fluid led from the supply passage to the lead-out passage to the discharge passage at a movement initial stage thereof when the spool is moved to one from the neutral position;
• and
• a communication portion provided on the lead-out side land portion and configured to cause the lead-out passage and the communication path to communicate with each other at a movement final stage thereof when the spool is moved to the one from the neutral position.