| 摘要 |
PURPOSE:To stabilize pressure acting on a control flow port of a load sensing flow priority valve LV and stabilize the control of the pressure. CONSTITUTION:A flow priority valve FV is provided with a supply port 41, control flow port 42 and surplus flow port 43 connected respectively to a pump P, a supply port 2 of a load sensing flow priority valve LV and a brake booster BB. The load sensing flow priority valve LV has the control flow port 3 connected to a power steering device PS, the surplus flow port 4 connected to the work machine side circuit and a booster return path to the upstream of a power steering device. |
