This model is mainly applied to 20-25T positive flow control system hydraulic excavator. Integral block multi-way valve, mainly composed of left and right two parts of valve body and straight line walking valve , with the function of excavating enforce, arm, bucket rod and bucket combination, bucket rod regeneration, swing and arm priority, arm and bucket rod load maintenance and others. Integral block multi-way valve, mainly composed of left and right two parts valve body and straight line walking valve, with the function of excavating enforce, arm, bucket rod and bucket combination, bucket rod regeneration, swing and arm priority, arm and bucket rod load maintenance and others.
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